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LEGAL ACTS OF THE REPUBLIC OF LATVIA
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Text consolidated by Valsts valodas centrs (State Language Centre) with amending regulations of:

1 February 2011 [shall come into force from 4 February 2011];
7 April 2015 [shall come into force from 1 June 2015];
10 July 2018 [shall come into force from 13 July 2018].

If a whole or part of a paragraph has been amended, the date of the amending regulation appears in square brackets at the end of the paragraph. If a whole paragraph or sub-paragraph has been deleted, the date of the deletion appears in square brackets beside the deleted paragraph or sub-paragraph.


Republic of Latvia

Cabinet
Regulation No. 325
Adopted 15 May 2007

Labour Protection Requirements when Coming in Contact with Chemical Substances at Workplaces

Issued pursuant to
Section 25, Clause 11 of the Labour Protection Law
and Section 16 of the Chemical Substances Law

[1 February 2011]

I. General Provisions

1. This Regulation prescribes labour protection requirements for employees when coming in contact with chemical substances (including mixtures) at workplaces if a risk is caused or may be caused from the effect of chemical substances present in the work environment or related to the working process, as well as special restrictions and prohibitions in relation to individual dangerous chemical substances or mixtures.

[1 February 2011]

2. This Regulation applies to workplaces where an employee is or may be exposed to the effect of such chemical substances and mixtures:

2.1. which conforms to the criteria laid down in Annex 1 to Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006 (hereinafter - Regulation No 1272/2008) for classification of substances in any of physical or health hazard classes irrespective of whether this chemical substance is classified in accordance with Regulation No 1272/2008;

2.2. which are present in the working environment or utilised at work and due to the physical, chemical and toxic properties thereof endanger the safety and health of an employee;

2.3. to which an occupational exposure limit value (OEV) has been determined - such concentration of chemical substances or mixtures in the air of the work environment which for the whole duration of the life of an employee does not cause the contraction of a disease or deterioration of health which can be determined by modern investigative methods if the relevant chemical substances and mixtures affect an employee not longer than 8 hours during a working day or not longer than 40 hours a week (Annex 1, 2); and

2.4. to which a biological limit value (BLV) has been determined - indicators of concentration of chemical substances and metabolites thereof received by the organism of the employee and the biological effects caused by chemical substances in the biological environment of the employee, which values shall be determined for healthy employees who are exposed to chemical substances and mixtures on the level of the occupational exposure limit value (OEV) (Annex 3).

[1 February 2011; 7 April 2015]

3. The occupational exposure limit value (OEV) for a chemical substance shall be determined taking into account physico-chemical properties, toxicity, epidemiological researches in the field of non-infectious diseases and conditions for technological process, as well as evaluating the data regarding chemical substances with a similar structure. The occupational exposure limit value (OEV) of a chemical substance shall be used for evaluation of chemical risk on the working environment (concentration of the chemical substance in the air of the working environment shall be compared with the occupational exposure limit value (OEV)).

4. The occupational exposure limit value (OEV) shall be defined as an average arithmetical value for a working day of 8 hours (average shift concentration) or as a value for a short period of time (up to 15 min., for fibrogenic substances - up to 30 min.). The occupational exposure limit value (OEV) shall be measured at a temperature of 20 oC at a pressure of 101.3 kPa and expressed in milligrams per cubic meter (mg/m3), but the concentration of gases and vapour may be expressed also in measurement units not dependent on the temperature and pressure - ppm (ml/m3), which is a millionth of the capacity.

5. The Ministry of Welfare shall, in co-operation with the relevant standards technical committee, recommend to the State limited liability company "Standardisation, Accreditation and Metrology Centre" a list of standards to be drawn up, adapted and applied in relation to this Regulation.

[17 April 2015]

6. The State limited liability company "Standardisation, Accreditation and Metrology Centre" shall publish on its official web page a list of those Latvian national standards applied to ensure the conformity with the requirements laid down in this Regulation (hereinafter - the applicable standards).

[7 April 2015]

7. The employer shall be liable for compliance with this Regulation.

8. Compliance with this Regulation shall be controlled by the State Labour Inspectorate and other authorities in accordance with the competence specified thereto by the Chemical Substances Law.

[1 February 2011]

II. Determination and Assessment of Risk

9. The employer shall ensure the assessment of the risk caused by chemical substances and mixtures in conformity with the procedures for the internal supervision of the work environment and the procedures for the risk assessment in the work environment of an undertaking involving trusted representatives and employees.

[1 February 2011]

10. To determine the concentration of chemical substances in the air of the work environment, the employer shall, upon request of the control authorities referred to in Paragraph 8 of this Regulation, involve the laboratory accredited in the national accreditation body in accordance with the laws and regulations regarding the assessment, accreditation, and surveillance of conformity assessment bodies, or in an accreditation body of another European Union Member State or European Economic Area State which performs the conformity assessment of laboratories in specification of the concentration of chemical substances in the air of the work environment.

[7 April 2015]

11. The employer shall determine workplaces and work processes where chemical substances and mixtures cause or may cause a risk to the safety and health of employees, and assess the risk thereof, taking into account:

11.1. information in the safety data sheets of the chemical substances and mixtures received from a supplier or importer;

11.2. results of the health examination of employees;

11.3. results and prognoses of preventative measures taken or to be taken;

11.4. other information regarding the dangerousness of the chemical substances and mixtures;

11.5. the occupational exposure limit value (OEV) of chemical substances in the air of the work environment;

11.6. the biological limit values (BLV) of chemical substances and mixtures;

11.7. particular work conditions and processes at a workplace and in a room (including at adjacent workplaces), as well as dangerous properties of chemical substances and mixtures present in the work environment due to which the risk is caused or increased to the health and safety of employees in the relevant work conditions and in emergency situations;

11.8. the occupational exposure concentration of chemical substances in the air of the work environment, which is specified as 8 hours or temporary occupational exposure concentration (one or both of these values), as well as the type and duration of the effect of substances;

11.9. the amount of chemical substances and mixtures at the workplace;

11.10. risk of potential accidents which is related to the use of chemical substances and mixtures at work and the physico-chemical properties thereof:

11.10.1. if there are binding regulatory enactments regarding the procedures for the industrial accident risk assessment and risk reduction measures for the undertaking, then, in carrying out the procedures specified therein, also the requirements specified in this Regulation shall be taken into account; or

11.10.2. if there are no binding regulatory enactments regarding the procedures for the industrial accident risk assessment and risk reduction measures for the undertaking, the accident risk reduction measures shall be determined by this Regulation; and

11.11. the results of other risk assessments (for example, the risk assessment of a new chemical substance or risk assessment of an accident).

[1 February 2011]

12. Risk shall be assessed regularly once a year, as well as in cases when:

12.1. significant changes have occurred in the work environment (for example, changes in the composition, physical state or raw materials of a preparation);

12.2. new activities have been introduced or the production process has been modified (for example, work equipment, technological and control process);

12.3. the results of inspections in the work environment indicate the possible risk of the effect of chemical substances on employees, it is specified in measurements, that the occupational exposure limit value (OEV) has been exceeded or deficiencies of the technological process, equipment or technical methods have been determined;

12.4. an emergency situation has occurred which has caused or precipitated an accident, fire, explosion or release of dangerous chemical substances and mixtures;

12.5. an acute case of occupational poisoning or an occupational disease caused by a chemical risk factor has been confirmed; or

12.6. new information regarding the harmfulness of the relevant chemical substance and mixture to the health of employees, information regarding the possibility of fire or explosion, as well as regarding the possibility of the release of dangerous chemical substances or dangerous mixtures.

[1 February 2011]

13. In the cases referred to in Paragraph 12 of this Regulation, the employer shall assess the risk caused by changes and take the necessary preventative measures before assigning employees to work.

14. The maintenance of equipment and other activities, during which the safety and health of employees may be endangered and employees may be exposed to the effects of the chemical substances and mixtures referred to in Paragraph 2 of this Regulation, shall also be taken into account in the risk assessment.

[1 February 2011]

15. The employer shall ensure that the concentration of chemical substances in the air of the work environment is regularly determined and compared with the occupational exposure limit value (OEV), and in accordance with economic and technical capabilities the employer shall take measures for the reduction of the actual values of occupational exposure. The employer shall determine the exposure of chemical substances in the air of the work environment and assess it in accordance with the methodology specified in Annex 4 to this Regulation.

16. If the applicable standards have been observed in the exposure assessment of inhalable chemical substances and mixtures, it is considered that the requirements for the exposure assessment of inhalable chemical substances and mixtures at the workplace are observed.

[1 February 2011]

17. Periodicity for concentration measurements of a chemical substance shall be determined in accordance with the exposure index of the chemical substance, which is obtained by dividing the concentration of the chemical substance (occupational exposure concentration) in the working environment by the occupational exposure limit value (OEV):

EI = C , where
AER

EI - the exposure index of the chemical substance;

C - the concentration of the chemical substance (occupational exposure concentration) in the air of the working environment.

18. If, in determining the concentration of a chemical substance during one working day or one shift, the exposure index of the chemical substance is more than 1 (EI > 1), the exposure in the air of the working environment is larger than the occupational exposure limit value (OEV). This causes a risk to the safety and health of an employee and the employer shall immediately perform measures for risk elimination. After implementation of the referred to measures the employer shall perform repeated measurements of the concentration of the chemical substance in order to ascertain the efficiency of the measures performed and the reduction of risk up to an admissible level.

[1 February 2011]

19. If in determining the concentration of a chemical substance during one working day or one shift the exposure index of the chemical substance is equal to 0.1 or less (EI ≤ 0,1), the exposure of the chemical substance in the air of the working environment is equal to 1/10 of the occupation exposure limit value (OEV) or less. If it is possible to prove that these levels are characteristic for the working environment in long term, periodical measurements shall be optional.

20. The time interval for the next periodical measurement shall be determined in accordance with the result obtained in the previous measurements. The maximum time interval up to the next periodical measurement shall be:

20.1. 104 weeks, if EI ≤ 0.5 in the previous measurements (occupational exposure concentration is less than a half of the occupational exposure limit value (OEV));

20.2. 52 weeks, if 0.5 < EI ≤ 0.75 in the previous measurements (occupational exposure concentration is between a half and 3/4 of the occupational exposure limit value (OEV)); or

20.3. 24 weeks, if 0.75 < EI ≤ 1 in the previous measurements (occupational exposure concentration is more than 3/4 or 75% of the occupational exposure limit value (OEV)).

[1 February 2011]

21. Measurements shall be performed during a working process (typical working conditions). If working conditions change and a risk increase has been determined or is possible, additional measurements of chemical substances shall be carried out.

22. If fast acting chemical substances are discharged in the air of the working environment, an alarm system shall be installed for the control of such substances, which notifies regarding the exceeding of the occupational exposure limit value (OEV).

23. If employees are exposed to more than one chemical substance or mixture (simultaneously or gradually), the risk shall be assessed taking into account the potential mutual and total exposure of all the chemical substances and mixtures used at work and the effect thereof on the safety and health of employees:

23.1. if in the air of the working environment there are several chemical substances with opposite (antagonistic) effects concurrently, the occupational exposure limit values (OEVs) shall remain the same as in case when each substance would affect separately; or

23.2. if in the air of the working environment there are several dangerous chemical substances with a similar (synergic) activity, the total effects of these substances shall be calculated using the following formula:

where

C1; C2; Cn - the concentration of the substances in the air of the working environment (mg/m³);

AER1; AER2; AERn - the occupational exposure limit values of the substances (mg/m³).

The actual concentration ratio of the substances exposure against OEV (exposure index EI) may not exceed 1 in summing. If the sum of these fractions is 1, it complies with the limit value of the total effect.

[1 February 2011]

24. The employer shall document the results of the risk assessment, including measurement results necessary for the risk assessment and measures taken for the elimination or reduction of risk caused by chemical substances and mixtures. Such documentation shall be kept for at least three years.

[1 February 2011]

25. The employer shall ensure the possibility for employees, trusted representatives thereof and representatives of employees to become acquainted with the risk assessment and measurement results, as well as with the effect of chemical substances and mixtures on the safety and health of employees.

[1 February 2011]

26. The employer shall ensure accessibility of the risk assessment results, including measurement results, to a doctor or an institution responsible for the health care of employees.

27. [1 February 2011]

28. [1 February 2011]

29. [1 February 2011]

III. Prevention and Reduction of Risk

30. If the type of work and technical capabilities permit this, the employer shall replace the dangerous chemical substances and dangerous mixtures with chemical substances and mixtures that are not dangerous or are less dangerous in the particular working conditions to the safety and health of employees.

[1 February 2011]

31. If a risk to the safety and health of employees has been determined, the employer shall eliminate such risk or, if it is not possible considering the specific nature of the work, reduce the risk, taking the following measures:

31.1. equip the workplace with appropriate equipment, as well as ensure such work organisation, technical methods and technological processes that do not cause a risk to the safety and health of employees;

31.2. ensure the regular maintenance of technological equipment, workplaces and facilities;

31.3. by assigning an employee to work with chemical substances and mixtures, take into account the professional education, experience, training and level of preparedness of the employee in the field of labour protection;

31.4. restrict the number of such employees who work with chemical substances and mixtures;

31.5. eliminate the contact of employees with chemical substances and mixtures or reduce to the minimum the duration and intensity of exposure thereof;

31.6. ensure that only such amount of chemical substances and mixtures that are necessary for the performance of particular work is present in work premises; and

31.7. when planning and organising the work process:

31.7.1. ensure correct storage of chemical substances and mixtures taking into account the compatibility, explosive and fire safety properties thereof;

31.7.2. separate the place of storage of chemical substances and mixtures from work premises and equip it with exhaust ventilation;

31.7.3. eliminate the release of chemical substances, but if the release has occurred, provide immediate measures for the liquidation or reduction of the consequences of the release;

31.7.4. classify and mark chemical substances and mixtures, as well as waste containing such substances or mixtures, ensure safe and fast collection thereof in accordance with the regulatory enactments regarding the classification, marking, packaging, storage, transportation and utilisation of chemical substances and mixtures, as well as dangerous waste;

31.7.5. demarcate the workplaces appropriately and use safety signs and notices specified in the regulatory enactments regarding labour protection requirements for the use of safety signs;

31.7.6. develop action measures for potential emergency situations; and

31.7.7. arrange premises appropriate for the rest and practical needs of employees in which the risk caused by chemical substances and mixtures has been eliminated.

[1 February 2011]

32. Risk elimination and reduction measures shall be performed in the following order:

32.1. elimination or maximum reduction of the risk caused by chemical substances and mixtures at a workplace by establishing an appropriate system of work processes and technical supervision;

32.2. utilisation of appropriate work equipment, technologies and materials, and control of the work environment for the elimination or reduction of the spreading of dangerous chemical substances;

32.3. selection and introduction of collective protection measures directly at the source of the risk (for example, the general and, if necessary, local exhaust ventilation has been arranged according to the project and calculations); and

32.4. utilisation of individual labour protection measures, including personal protection equipment if the effect of chemical substance and mixture exposure may not be eliminated by the measures referred to in this Paragraph.

[1 February 2011]

33. If it has been determined that the occupational exposure limit values (OEV) of chemical substances have been exceeded, the employer shall immediately take appropriate labour protection measures.

34. In storing, replacing and separating incompatible chemical substances and mixtures, the employer shall take into account the risk caused by the physical, chemical and toxic properties of the specific chemical substances and mixtures and perform the following technical and organisational measures for the provision of safety and health of employees:

34.1. eliminate the accumulation of a dangerous concentration of highly flammable substances or chemically unstable substances (substances which under the influence of various external factors do not retain their properties for a long time) at the workplace and in the air of the work environment;

34.2. ensure compliance with the fire safety and explosion-proof regulations and exclude the presence of ignition sources at workplaces where activities with explosive chemical substances, mixtures and highly flammable and chemically unstable substances or mixtures thereof are performed;

34.3. ensure provision of the first aid and other measures that reduce the effect of harmful factors on the health and safety of employees if fire or explosion has occurred due to the ignition of flammable substances or reduce other consequences caused by chemically unstable substances or mixtures thereof; and

34.4. ensure compliance with the regulatory enactments in respect of the safety of equipment and protective systems to be used in an explosive atmosphere.

[1 February 2011]

35. The employer shall ensure the labelling of packaging, containers and pipelines of chemical substances and placement of safety signs at workplaces, and conformity of the labelling with the contents of the packaging, container or pipeline in accordance with the regulatory enactments regarding the procedures for the classification, labelling and packaging and labour protection requirements for the use of safety signs.

[1 February 2011]

IV. Measures in Emergency Situations

36. If regulatory enactments regarding the procedures for the assessment of risk of industrial accidents and measures for risk reduction are binding on the undertaking, the employer shall ensure a prior notification in accordance with this Regulation.

37. If regulatory enactments regarding the procedures for the assessment of risk of industrial accidents and measures for risk reduction are not binding on the undertaking, but in carrying out the assessment of risk it is determined that there is a risk of accident involving dangerous chemical substances or mixtures, and it is foreseeable that the consequences of an accident would affect the territory outside the undertaking, the employer shall submit the information in writing to the relevant territorial unit of the State Fire-fighting and Rescue Service, indicating the chemical substance or the name of the mixture, class of dangerousness, as well as the relevant risk and safety phrases.

[1 February 2011]

38. The employer in accordance with the risk assessment shall develop measures to be taken by employees in case of potential incidents or accidents at workplaces where work with chemical substances and mixtures is performed and which are subject to the risk of an accident, determining the responsible employees and indicating the procedures on how to contact these employees in an emergency situation, as well as indicating the telephone numbers of responsible employees and the State Fire-fighting and Rescue Service, as well as determining the information to be notified in case of an accident.

[1 February 2011]

39. Theoretical and practical training of employees regarding the provision of first aid and action in emergency situations (for example, fire, release of chemical substances) shall be organised at least once a year taking into account the specific nature of the workplace and properties of chemical substances and mixtures to be used at work.

[1 February 2011]

40. If an emergency situation occurs, the employer shall immediately inform employees thereof and take measures for the elimination or reduction of the harmful effects of the chemical substances and mixtures and the stabilisation of the situation (for example, disconnection of equipment, evacuation of employees, containment of fire, leakage control, determination and demarcation of the danger zone).

[1 February 2011]

41. Only such employees as are involved in repairs or who take specific measures for the elimination of the emergency situation, and who are specially trained for such actions, may be present in the danger zone in emergency situations. Only such repairs or other work necessary for the elimination or reduction of consequences and threat caused by the emergency may be performed in the danger zone in emergency situations.

42. The employer shall provide employees working in the danger zone with personal protective equipment, specialised safety equipment and work equipment appropriate for the particular working conditions. Personal protective equipment, specialised safety equipment and work equipment shall be used until the dangerous factors are completely eliminated in accordance with the risk assessment of such factors and the instructions of the manufacturer. Persons without appropriate personal protective equipment are prohibited from being present in the danger zone in emergency situations.

43. The employer shall ensure efficient operation of alarm and emergency communication means in order to provide information immediately to each employee regarding the threats to his or her safety and health.

44. The employer shall regularly, but at least once a year in conformity with the risk assessment, revise and update the measures to be performed in emergency situations, as well as for the elimination of an emergency situation.

V. Consultation, Information and Training

45. The employer shall provide employees and trusted representatives thereof with the training appropriate to the specific nature of work and necessary information regarding the relevant labour protection measures so that each employee knows how to protect himself or herself and other employees at the workplace. The employer shall ensure the following information:

45.1. regarding the risk assessment performed in accordance with the requirements of Chapter II of this Regulation taking into account any changes at a workplace that may change the risk assessment data;

45.2. regarding measures for risk elimination and reduction, and changes in the risk assessment data;

45.3. regarding chemical substances and mixtures in the workplace, concentration thereof in the air of the work environment, risk to safety and health of employees, as well as regarding the occupational exposure limit values (OEV) of chemical substances and mixtures;

45.4. regarding the characterisation of chemical substances and mixtures provided for in the safety data sheets in accordance with Article 31 of Regulation (EC) No 1907/2006 of the European Parliament and of the Council of 18 December 2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), establishing a European Chemicals Agency, amending Directive 1999/45/EC and repealing Council Regulation (EEC) No 793/93 and Commission Regulation (EC) No 1488/94 as well as Council Directive 76/769/EEC and Commission Directives 91/155/EEC, 93/67/EEC, 93/105/EC and 2000/21/EC;

45.5. regarding action and measures in emergency situations.

[1 February 2011; 7 April 2015]

46. The employer shall provide training of such employees who come or may come into contact with chemical substances or mixtures:

46.1. prior to the commencement of work;

46.2. regularly, at least once a year; and

46.3. repeatedly if changes which may affect the safety and health of employees have occurred in the work environment, new information regarding the properties of the chemical substances has been received or it has been determined that the level of knowledge of the employee is not adequate.

[1 February 2011]

47. Employees, trusted representatives of employees and representatives thereof shall consult and participate in resolving of the issues provided for in this Regulation in accordance with the Labour Protection Law.

VI. Special Restrictions and Prohibitions for the Production, Manufacture and Use of Chemical Substances and Mixtures at Workplaces, as well as in Performing Other Activities Therewith

[1 February 2011]

48. Special restrictions that relate to the activities with individual dangerous chemical substances shall be regulated by the regulatory enactments regarding restrictions on the production, trade and use of dangerous chemical substances and mixtures, except the following cases:

48.1. performance of scientific research, tests and analysis;

48.2. processing or destruction of chemical substances and mixtures - by-products or production waste; and

48.3. production and utilisation of chemical substances and mixtures as intermediate products in a unified, continual process.

[1 February 2011]

49. In the exception cases specified in Paragraph 48 of this Regulation it is permitted to perform activities with individual dangerous chemical substances if the requirements referred to in Paragraph 50 of this Regulation have been complied with and the employer has prepared and submitted to the control authorities the following data prior to the commencement of work:

49.1. justification of the exception;

49.2. calculations on the quantity of chemical substances or mixtures to be used per year;

49.3. descriptions of such activities (reactions, processes) during which the relevant chemical substance or mixture is used;

49.4. the estimated number of employees; and

49.5. the technical and other measures that eliminate or reduce the risk to the safety and health of employees.

[1 February 2011]

50. The chemical substances and mixtures referred to in Paragraph 48 of this Regulation may be produced and utilised only when production and utilisation is performed in a closed system (a system which does not allow direct contact of an employee with a chemical substance or mixture) from which chemical substances are output only if it is necessary for the control of the process or system maintenance.

[1 February 2011]

VII. Health Surveillance of Employees

51. Mandatory health examinations shall be performed for employees who may come into contact with chemical substances and mixtures at a workplace in accordance with the procedures specified by regulatory enactments regarding mandatory health examination. Upon sending an employee to a mandatory health examination, the employer shall indicate information in the mandatory health examination card regarding chemical substances, the type and duration of exposure thereto and the concentration thereof in the air of the working environment.

[1 February 2011]

52. If an employee comes or may come into contact with chemical substances or mixtures at the workplace, a competent specialist or a competent authority and the State Labour Inspectorate, if necessary, shall have access to the results of his or her health examination in accordance with the Labour Protection Law.

[1 February 2011]

53. An employee who comes or may come into contact with chemical substances or mixtures at the workplace has the right to become acquainted with the results of the health examination related thereto.

[1 February 2011]

54. If employees come or may come into contact with chemical substances and mixtures at the workplace, the results of the health examination shall be taken into account when developing labour protection measures at a particular workplace.

[1 February 2011]

55. If it has been determined in a health examination that a disease or health disorders of employees have been caused due to the contact with chemical substances or mixtures at the workplace or the biological limit values (BLV) have been exceeded:

55.1. a doctor of occupational diseases shall inform the employee regarding the results of the mandatory examination and provide information and instructions regarding health care also after termination of the effect of the chemical substances, as well as in accordance with the regulatory enactments regarding the procedures for the performance of mandatory health examinations shall notify the employer regarding non-conforming conditions of the work environment which may negatively affect other persons employed in similar conditions, indicating, that they also are recommended to undergo mandatory health examinations;

55.2. the employer shall carry out a repeat evaluation of the risk assessment results and labour protection measures that eliminate or reduce the relevant risk in conformity with Chapter III of this Regulation;

55.3. the employer shall consider the recommendations of a doctor of occupational diseases or occupational health care, a labour protection specialist, a competent specialist or a competent authority when taking measures of labour protection for the elimination or reduction of the risk caused by chemical substances and mixtures, providing a possibility to assign employees to alternative work where the risk of exposure to chemical substances and mixtures does not exist; and

55.4. the employer shall ensure systematic health surveillance and provide a repeat health examination to any employee who has been subject to similar exposure of chemical substances or mixtures.

[1 February 2011]

55.1 The employer shall keep the data of health examinations referred to in this Chapter for 40 years after the last known contact of the employee with chemical substances, afterwards the data shall be handed over to the archives. If the employer is liquidated, the data of health examinations shall be kept in accordance with the requirements specified in the regulatory enactments regarding keeping of archive documents.

[1 February 2011]

VIII. Closing Provisions

56. Cabinet Regulation No. 399 of 3 September 2002, Labour Protection Requirements when in Contact with Chemical Substances at Workplaces (Latvijas Vēstnesis, 2005, No. 72) is repealed.

Informative Reference to European Union Directives

[1 February 2011; 7 April 2015; 10 July 2018]

This Regulation contains legal norms arising from:

1) Commission Directive 91/322/EEC of 29 May 1991 on establishing indicative limit values by implementing Council Directive 80/1107/EEC on the protection of workers from the risks related to exposure to chemical, physical and biological agents at work;

2) Council Directive 98/24/EC of 7 April 1998 on the protection of the health and safety of workers from the risks related to chemical agents at work (fourteenth individual Directive within the meaning of Article 16(1) of Directive 89/391/EEC);

3) Commission Directive 2000/39/EC of 8 June 2000 establishing a first list of indicative occupational exposure limit values in implementation of Council Directive 98/24/EC on the protection of the health and safety of workers from the risks related to chemical agents at work;

4) Directive 2004/37/EC of the European Parliament and of the Council of 29 April 2004 on the protection of workers from the risks related to exposure to carcinogens or mutagens at work (Sixth individual Directive within the meaning of Article 16(1) of Council Directive 89/391/EEC);

5) Commission Directive 2006/15/EC of 7 February 2006 establishing a second list of indicative occupational exposure limit values in implementation of Council Directive 98/24/EC and amending Directives 91/322/EEC and 2000/39/EC; and

6) Commission Directive 2009/161/EU of 17 December 2009 establishing a third list of indicative occupational exposure limit values in implementation of Council Directive 98/24/EC and amending Commission Directive 2000/39/EC;

7) Directive 2014/27/EU of the European Parliament and of the Council of 26 February 2014 amending Council Directives 92/58/EEC, 92/85/EEC, 94/33/EC, 98/24/EC and Directive 2004/37/EC of the European Parliament and of the Council, in order to align them to Regulation (EC) No 1272/2008 on the classification, labelling and packaging of substances and mixtures;

8) Commission Directive (EU) 2017/164 of 31 January 2017 establishing a fourth list of indicative occupational exposure limit values pursuant to Council Directive 98/24/EC, and amending Commission Directives 91/322/EEC, 2000/39/EC and 2009/161/EU.

Prime Minister A. Kalvītis

Acting for the Minister for Welfare,
Minister for the Environment R. Vējonis

 

In Revised Version Submitted by the Ministry of Welfare
Annex 1
Cabinet Regulation No. 325
15 May 2007

Occupational Exposure Limit Values (OEV) of Chemical Substances in the Air of the Work Environment

[1 February 2011; 7 April 2015; 10 July 2018]

No. EINECS1 CAS2 Name of the substance (including synonyms) Structural formula/sum formula Occupational Exposure Limit Values (OEV) Notes
          8 h Short-term (15 min.)  
          mg/m³ ppm (ml/m3) mg/m³ ppm (ml/m3)  
1. 200-835-2 75-05-8 Acetonitrile

(cyanomethane)

CH3CN 70 40 - - Skin
2.   75-07-0 Acetaldehyde

(ethanal)

CH3CHO 5 - - -  
3.   50-78-2 Acetylsalicylic acid

(2-acetoxybenzoic acid)

  0.5 - - -  
4.   98-86-2 Acetophenone

(phenyl methyl ketone)

  5 - - -  
5.   75-86-5 Acetone cyanohydrin

(-α-hydroxyisobutyronitrile

2-hydroxy-2-methylpropionitrile)

  0.9 - - -  
6. 200-662-2 67-64-1 Acetone

(2-propanol, dimethyl ketone)

CH3COCH3 1210 500 - -  
7.   124-04-9 Adipic acid

(1,4- butanedicarboxylic acid)

HOOC(CH2)4COOH 4 - - -  
8.   626-86-8 Adipic acid monoethylester

(1,4-butanedicarboxylic acid monoethylester)

HOOC(CH2)4COOCH2CH3 3 - - -  
9.     Coal tar and pitch sublimates with average content of benzopyrene (CAS No. 50-32-8):            
  * less than 0,075 %   0.2 - - -  
  * 0,075-0,15 %   0.1 - - -  
  * 0,15-0,3 %   0.05 - - -  
10.   79-06-1 Acrylamide

(propenoic acid amide)

 

0.2 - - -  
11.   107-13-1 Acrylonitrile

(cyanoethylene)

H2C=CH-CN 0.5 - - - Auditory effect
12. 201-177-9 79-10-7 Acrylic acid (propenoic acid) propene-2 acid H2C=CH-COOH 5 1.7 594 204  
13.   376-84-1 Acrylic acid 1H, 1H, 5H-octafluoropenthyl ester

(2,2,3,3,4,4,5,5- octafluoropenthyl acrylate

2-propenoic acid 2,2,3,3,4,4,5,5-octafluoropenthyl ester)

H2C=CHCOOCH2 (CF2)5 CF3 30 - - -  
14.   103-11-7 Acrylic acid 2-ethylhexyl ester

(2-propenoic acid 2-ethylhexyl ester

2-ethylhexyl acrylate)

H2C=CHCOOCH2 -CH(C2H5)(CH2)3CH3 1 - - -  
15.   818-61-1 Acrylic acid 2-hydroxyethyl ester

(2-hydroxyethyl acrylate)

H2C=CH-COOCH2CH2OH 0.5 - - -  
16.   814-68-6 Acrylic acid chloroanhydride

(acryloilchloride

propenoyl chloride)

H2C=CH-COCl 0.3 - - -  
17. 203-453-4 107-02-8 Acrolein (acrylaldehyde, 2-propenal) H2C=CH-CHO 0.05 0.02 0.12 0.05  
18.   107-95-9 β- alanine

(3-aminopropanoic acid)

NH2CH2CH2COOH 10 - - -  
19. 203-470-7 107-18-6 Allyl alcohol

(2-propene-1-ol)

CH2=CHCH2OH 4.8 2 12 1 5 Skin
20.   21645-51-2 Aluminium hydroxide Al(OH)3 6 - - -  
21.   24304-00-5 Aluminium nitride AlN 6 - - -  
22.   1344-28-1 Aluminium oxide Al2O3          
    * in the aerosol form of disintegration   6 - - -  
    * in the mixture with nickel (up to 15 %), (electro-corundum)   4 - - -  
23.   7429-90-5 Aluminium and alloys thereof (by aluminium) Al 2 - - -  
24.     Tin inorganic compounds after Sn 2 - - - -
25. 211- 047-3 628-63-7 Amyl acetate

(pentyl acetate

pentyl ethanoate)

CH3COO(CH2)4CH3 270 50 540 100 -
26.   620-11-1 3-Amyl acetate

(3-pentyl acetate,

3-pentyl ethanoate)

CH3COOCH(C2H5)2 270 50 540 100 -
27.   625-16-1 tert-amyl acetate

acetic acid 2-methyl-2-butylester (tert-pentyl acetate)

CH3COOC(CH3)2C2H5 270 50 540 100 -
28.   110-53-2 Amyl bromide

(pentyl bromide)

CH3(CH2)4Br 0.3 - - -  
29.   638- 49-3 Amyl formate

(pentyl formate,

formic acid pentyl ester)

HCOOC5H11 10 - - -  
30.   71-41-0 Amyl alcohol

(1-pentanol)

CH3(CH2)3CH2OH 10 - - -  
30.1 200-521-5 61-82-5 Amitrole (1,2,4-triazol-3-amine) C2H4N4 0.2        
31.     Amines, alyphatic

(alkyl amines)

H2N-R, R ≥ C7 1 - - -  
32.   1918-02-1 4-Amino-3,5,6-trichloropicolinic acid

(4-Amino-3,5,6-trichloropyridine-2-carboxylic acid,

tordon-22k, picloram)

  2 - - -  
33.   3060-41-1 3-Amino-4-phenylbutyric acid hydrochloride

(phenibute)

  1 - - -  
34.   6928-85-4 1-Amino-4-methylpiperazine

(4-methylpiperazine-1amine)

  2 - - -  
35. 205-483-3 141-43-5 2-Aminoethanol

(monoethanolamine)

NH2CH2CH2OH 0.5 0.2 7.6 3 Skin
36.   111-41-1 2-(2-Aminoethylamino) ethanol NH2CH2CH2NHCH2CH2OH 3 - - -  
37.   591-27-5 3-aminophenol   1 - - -  
38.   123-30-8 4-aminophenol 1 - - -  
39.   929-17-9 7-Aminoheptanoic acid H2N(CH2)6COOH 8 - - -  
40.     AMINOACIDS            
  56-41-7 L-alanine

(2-aminopropionic acid

- α-aminopropionic acid)

CH3CH(NH2)COOH 5 - - -  
41.   74-79-3 Arginine

(2-amino-5-guanidinovaleric acid)

10        
42.   56-84-8 Aspartic acid

(2-aminosuccinic acid)

HOOCCH2CH(NH2)COOH 10        
43.   52-90-4 Cysteine

(2- amino -3-mercaptopropanoic acid,

α -- amino- β -mercaptopropionic acid)

HSCH2CH(NH2)COOH 2        
44.  

56-89-3

Cystine

(3,3'-Dithiobis-2-aminopropanoic acid,

2-amino-3-(2-amino-2-carboxyethyldisulfanyl)propanoic acid)

2        
45.   63-91-2 Phenylalanine

(2-amino-3-phenyl-propanoic acid,

α -- amino- β -phenylpropionic acid)

C6H5-CH2 CH(NH2)COOH 5        
46.   56-40-6 Glycine

(aminoacetic acid)

NH2CH2COOH 5        
47.   56-86-0 Glutamic acid

(1-amino-propane-1,3-dicarboxylic acid)

HOOCCH2CH2CH(NH2)COOH 10        
48.   71-00-1 Histidine

(2-amino-3-(4-imidazolyl)propanoic acid)

5        
49.   73-32-5 Isoleucine

(2-amino-3-methyl-pentanoic acid)

α --amino- β -.-methylvaleric acid)

5        
50.   61-90-5 Leucine

(2-amino-4-methyl-pentanoic acid)

α - aminoisocaproic acid)

(CH3)2CHCH2CH(NH2)COOH 5        
51.   56-87-1 Lysine

(2,6-diaminohexanoic acid,-

α, ε diaminocaproic acid

NH2(CH2)4CH(NH2)COOH 5        
52.   63-68-3 Methionine

(2-amino-4-methylmercaptobutyric acid

α - amino-g-methylthiobutyric acid)

CH3SCH2CH2CH(NH2)COOH 5        
53.   98-79-3 5-Oxoproline

(glutamic acid 5-lactam

pyrrolidone-5-carboxylic acid)

  5        
54.   147-85-3 Proline

(2-pyrrolidinecarboxylic acid)

  5        
55.   56-45-1 Serine

(2-amino-3-hydroxypropanoic acid)

HOCH2CH(NH2)COOH 5        
56.   60-18-4 Tyrosine

(2-amino-3-(4-hydroxyphenyl)-propanoic acid,

3-(4-hydroxyphenyl)alanine)

  2        
57.   72-19-5 Threonine

(2-amino-3-hydroxy-butanoic acid)

CH3CH(OH)CH(NH2)COOH 2        
58.   73-22-3 Tryptophan

(2-amino-3-(3-indolyl)propanoic acid)

  2        
59.   72-18-4 Valine

(2-amino-3-methyl-butanoic acid)

(CH3)2CHCH(NH2)COOH 5        
60.   7783-28-0 Ammophos

(ammonium hydrogen phosphate and dihydrogen phosphate mixture, diammonium hydrogen orthophosphate)

NH4H2PO4, (NH4)2HPO4 6        
61.   16919-58-7 Ammonium (IV)hexachloroplatinate (NH4)2[PtCl6] 0.005        
62.   1309-32-6 Ammonium hexafluorosilicate (after fluorine) NH4SiF6 0.2        
63.   12125-02-9 Ammonium chloride NH4Cl 10        
64.   1762-95-4 Ammonium rodanide

(ammonium thiocyanate)

NH4SCN 5        
65. 213-695-2 1002-89-7 Ammonium stearate [CH3(CH2)16COO]NH4 2        
66.   7773-06-0 Ammonium sulfamate NH4SO3NH2 10        
67.   7783-18-8 Ammonium thiosulphate (NH4)2S2O3 10        
68. 231-635-3 7664-41-7 Ammonia NH3 14 20 36 50  
69.   69-53-4 Ampicillin

(adobacillin,

Aminophenylmethyl-penicillin,

aminobenzylpenicillin)

C16H20N3O4S 0.1        
70.   5907-38-0 Analgine

(sodium [(2-phenyl-1,5-dimethyl-3-oxo-2,3-dihydro-1H-pyrazol-4-yl)-methyl-amino]methanesulfonate)

  0.5        
71.     Anaesthetic gases

(halothane, sevoflurane, isoflurane, enflurane, desflurane, and other haloalkanes)

  20 2      
72.   62-53-3 Aniline

(aminobenzene,

phenylamine)

  0.1        
73.   104-94-9 Anisidine (p-anisidine; 4-amino-1-methoxybenzene, 4-methoxyaniline) 1        
74.   7440-36-0 Antimony metallic dust Sb 0.2   0.5    
75.   1309-64-4 Antimony trioxide (recalculating into antimony) Sb2O3 1        
l76. 215-237-7 1314-60-9 Antimony pentoxide (recalculating into antimony) Sb2O5 2        
77.     Arsenic inorganic compounds (after arsenic) (As) 0.01   0.04    
78.   12001-29-5 Asbestos 3 MgOx2 SiO2x2 H2O 0,1 sol. /cm3 air        
79.   109-52-4 Valeric acid

(pentanoic acid)

CH3CH2CH2CH2COOH 5        
80.   12253-23-5 Barium aluminate BaAl2O4 0.1        
81.     Barium aluminosilicate BaAl2Si2O8 0.5   1    
82.   52869-91-7 Aluminum barium titanate   0.5        
83.   23436-05-7 Barium borate

(orthoboric acid barium salt)

Ba3(BO3)2 0.5        
84.   13718-55-3 Barium chloride fluoride (luminophores P - 385) BaClF 0.1        
85.   7787-32-8 Barium fluoride BaF2 0.1        
86.   10048-98-3 Barium hydrogenorthophosphate

(barium hydrogen phosphate)

BaHPO4 0.5        
87.   52869-93-9 Barium calcium titanate BaCaTi2O6 0.5        
88.   513-77-9 Barium carbonate BaCO3 0.5        
89.   13462-86-7 Barium sulfate

(barite)

BaSO4 6        
90.     Barium soluble compounds after Ba 0.5       Skin
91.   125693-49-4 Barium tetratitanate BaTi4O9 0.5        
92.   12047-27-7 Barium titanate (IV) BaTiO3 0.5        
93.   103-83-3 Benzyldimethylamine C6H5CH2N(CH3)2 5        
94.   50-32-8 Benz(a)pyrene

(benzo[def]chrysene)

  0.00015        
95.   100-52-7 Benzaldehyde C6H5CHO 5        
96.   140-11-4 Benzyl acetate

(acetic acid, benzyl ester)

CH3COOCH2C6H5 5        
97.   100-44-7 Benzyl chloride

(-α-chlorotoluene)

C6H5CH2Cl 5        
98.   98-87-3 Benzylidene chloride

(α,α-    dichlorotoluene,

benzal chloride,

dichloromethylbenzene)

C6H5CHCl2 0.5        
99.   69-57-8 Benzylpenicillin

(6-phenylacetamido penicillinic acid sodium salt)

  0.1        
100.   100-51-6 Benzyl alcohol

(phenylmethanol,

phenylcarbinol)

C6H5CH2OH 5        
101.   8030-30-6 Petroleum spirits (fuel)   100        
102.   106-51-4 1,4- benzoquinone

(p- benzoquinone)

  0.05        
103.   98-88-4 Benzoyl chloride

(benzoic acid chloroanhydride)

C6H5COCl 5        
104. 200-753-7 71-43-2 Benzene C6H6 3.25 1     Skin
105.   528-44-9 1,2,4-benzenetricarboxylic acid

(trimellitic acid)

  0.1        
106.   100-47-0 Benzonitrile

(cyanobenzene)

C6H5CN 1        
107.   65-85-0 Benzoic acid C6H5COOH 5        
108.   87-25-2 Benzoic acid 2-amino- ethyl ester

(ethyl 2-aminobenzoate)

C6H5COOCH2CH2NH2 5        
109.   95-14-7 Benzotriazole   5        
110.   7440-41-7 Beryllium and its compounds After Be 0.001        
111.   13684-63-4 Betanal

(phenmedipham,

1-pyridylacetic acid betaine,

1-carboxymethyl pyridinium betaine)

  0.5        
112.   92-52-4 Biphenyl

(diphenyl)

  10        
113.   366-18-7 and 553-26-4 2,2'- bipyridyl and 4,4'-bipyridyl

2,2'-bipyridine and 4,4'-bipyridine,

2,2'-dipyridyl and 4,4'-dipyridyl)

  0.2        
114.   7440-69-9 Bismuth and its inorganic compounds After Bi 0.5        
115.   12069-32-8 Boron carbide B4C 6        
116.   10043-11-5 Boron nitride BN 6        
117.   7637-07-2 Boron fluoride

(boron trifluoride)

BF3 1        
118.   10043-35-3 Boric acid H3BO3 10        
119.   63428-82-0 Boverin (mixture of isomers)   0.3        
120. 231-778-1 7726-95-6 Bromine Br2 0.7 0.1      
121.   353-59-3 Bromochlorodifluoromethane

(freon 12Br

difluorochlorobromomethane)

CBrClF2 1000        
122.   95-56-7 and 106-41-2 Bromophenol, o- and p-isomers   0.3        
123.   107-81-3 2-bromopentane CH3CHBrCH2CH2CH3 5        
124.   75-63-8 Bromotrifluoromethane

(trifluorobromomethane,

freon 13 B1)

F3BrC 3000        
125. 233-113-0 10035-10-6 Hydrobromic acid HBr - - 6.7 2 -
126. 201-159-0 78-93-3 2-Butanone

(methylethylketone,

ethylmethylketone)

CH3CH2COCH3 200 67 900 300 -
127.   106- 99-0 1,3-butadiene CH2=CH-CH=CH2 100        
127.1 203-788-6 110-65-6 But-2-yn 1,4-diol (1,4-butynediol) C4H6O2/OHCH2CCCH2OH 0.5        
128.   106-97-8 Butane CH3CH2CH2CH3 300        
129. 205-480-7 141-32-2 n-Butyl acrylate CH2=CHCOO(CH2)3CH3 11 2 53 10 -
130.   109-73-9 Butylamine CH3CH2CH2CH2NH2 10        
131.  

109-65-9

Butyl bromide

(1-bromobutane)

CH3CH2CH2CH2Br 0.3        
132.   75-91-2 tert-Butyl hydroperoxide 5        
133.   109-69-3 Butyl chloride

(1-chlorobutane)

CH3CH2CH2CH2Cl 0.5        
134.   111-36-4 Butyl isocyanate CH3CH2CH2CH2N=C=O 1        
135.   97-88-1 Butyl methacrylate

(2-propenoic acid, 2-methyl-, butyl ester)

CH2=C(CH3)COOC4H9 30        
136.   628-28-4 Butyl methyl ether CH3OC4H9 100        
137.     Butyl alcohol (primary, secondary, tertiary)   10        
  71-36-3 (n-butanol, CH3CH2CH2CH2OH          
    1-butanol,            
  78-92-2 2-butanol, CH3CH2CH(OH)CH3          
  75-65-0 2-methyl-propan-2-ol, (CH3)3COH          
    tert-butanol,            
  78-83-1 2-methyl-propan-1-ol, (CH3)2CHCH2OH          
    iso-butyl alcohol)            
138.   111-34-2 Butyl vinyl ether CH2=CHOC4H9 20        
139. 203-905-0 111-76-2 2-butoxyethanol,

(ethyleneglycol monobutyl ether,

Butyl cellosolve)

HOCH2-CH2-O-C4H9 98 20 246 50 Skin
140. 203-933-3 112-07-2 2-Butoxyethyl acetate (ethyleneglycol monobutyl ether acetate,

butyl glycol acetate)

CH3COOCH2CH2O(CH2)3CH3 133 20 333 50 Skin
141. 203-961-6 112-34-5 2-(2-butoxyethoxy)ethanol (butyl diglycol) HOC2H4OCH2CH2O(CH2)3CH3 67.5 10 101.2 15  
142.   61-24-5 525-94-0

28393-42-2

Cephalosporin C;

Penicillin N (cephalosporin N); cephalosporin P;

C16H21N3O8S

C14H21N3O6S

C33H50O8

0.3        
143.   9004-34-6 Wood pulp   2        
144.   65997-15-1 Cement

(Portland cement)

  6        
145.   7758-88-5 Cerium (III) fluoride CeF3 0.5   2.5    
146.   1306-38-3 Cerium dioxide CeO2 5        
147.   21351-79-1 Caesium hydroxide CsOH 0.3        
148. 206-992-3 420-04-2 Cyanamide

(carbamonitrile)

H2NCN 1 0.58 - - Skin
149. 200-821-6 74-90-8 Hydrogen cyanide (hydrocyanic acid) HCN 0.3 0.27 5 4.5 Skin
150. 203-631-1 108-94-1 Cyclohexanone 40.8 10 81.6 20 Skin
151.   100-64-1 Cyclohexanone oxime   10        
152. 203-806-2 110-82-7 Cyclohexane   80 23      
153.   108-91-8 Cyclohexylamine   1        
154.     Cymol (2,3,4- mixture of isomers or separate isomers)

(2-isopropyltoluene

o-cymol

3-isopropyltoluene

m-cymol

4-isopropyltoluene

p-cymol)

10        
155.   12122-67-7 Zincethylene-N,N'-bisdithiocarbamate

(N,N'-ethanediylbis-dithiocarbamic acid zinc salt,

zineb,

cuprozan)

  0.5        
156.   1314-84-7 Zinc phosphide

(trizinc diphosphide)

Zn3P2 0.1        
157.   10192-46-8 Zinc hexaborate

(diboron trizinc hexaoxide)

Zn2B6O11 1        
158.   1314-13-2 Zinc oxide ZnO 0.5        
159.   1314-98-3 Zinc sulphide ZnS 5        
160.   112-30-1 n-Decyl alcohol

(1-decanol)

CH3(CH2)8CH2OH 10        
160.1 207-069-8 431-03-8 Diacetyl (butanedione, dimethyl diketone) CH3COCOCH3 0.07 0.02 0.36 0.1  
161.   131-17-9 Diallyl phthalate

(1,2-benzenedicarboxylic acid, di-2-propenyl ester)

  1        
162.   83968-18-7 Dialkylphthalate

(1,2-benzenedicarboxylic acid, dialkyl esters)

  1        
163.   2687-25-4 2,3 Diaminotoluene

(toluene-2,3- diamine)

  2        
164.   1303-86-2 Diboron trioxide B2O3 5        
165.   105-99-7 Dibutyl adipinate

(adipic acid dibutyl ester,

hexanedioic acid dibutyl ester,

1,4-butane dicarbonic acid dibutyl ester)

C4H9OOC(CH2)4COOC4H9 5        
166.   2528-36-1 Dibutyl phenylphosphate

(phosphoric acid, dibutyl phenyl ester)

  0.1        
167.   84-74-2 Dibutyl phthalate

(DBP,

1,2-benzenedicarboxylic acid dibutyl ester)

C6H4(COOC4H9)2 0.5        
168.   502-56-7 Dibutyl ketone CH3(CH2)3CO(CH2)3CH3 20        
169.   109-43-3 Dibutyl sebacinate

(sebacic acid dibutyl ester

decanedioic acid dibutyl ester)

C4H9OOC(CH2)8COOC4H9 10        
170. 203-716-3 109-89-7 Diethylamine (C2H5)2 NH 15 5 30 10 -
171.   111-46-6 Diethylene glycol

2,2'-oxybisethanol,

2,2'-dihydroxydiethyl ether)

HOCH2CH2-O-CH2CH2OH 10        
172. 200-467-2 60-29-7 Diethyl ether C2H5-O-C2H5 308 100 616 200 -
173.   84-66-2 Diethyl phthalate

(1,2-benzenedicarboxylic acid, diethyl ether)

C6H4(COOC2H5)2 0.5        
174.   82-66-6 Diphenacin

(diphenylacetyl-1,3-Indandion,

ratindan,

diphacinone)

  0.01        
175.     Diphenyls, chlorinated   1        
175.1 202-981-2 101-84-8 Diphenyl ether (phenylene ether, phenoxybenzene) C6H5OC6H5  7 1 14 2  
176.   76-12-0 1,2-Difluoro-1,1,2,2-tetrachloroethane

(tetrachlorodifluoroethane,

freon -112)

Cl2FC-CFCl2 1000        
177.   75-71-8 Dichloro-difluoro-methane

(Freon 12)

CCl2F2 3000        
178.   624-72-6 1,2-Difluoroethane,

(Freon 152)

FH2C-CH2F 3000        
179.   25497-29-4 1,2-Difluorochloroethane

(Freon 142)

FH2C-CHClF 3000        
180. 200-871-9 75-45-6 Difluorochloromethane CHClF2 3600 1000 - -  
181.   886-77-1 Difurfurylideneacetone   10        
182. 202-425-9 95-50-1 1,2-Dichlorobenzene,

(o-dichlorobenzol)

C6H4Cl2 122 20 306 50 Skin
183.   541-73-1 1,3-Dichlorobenzene

(m-dichlorobenzol)

Cl2C6H4 20        
184. 203-400-5 106-46-7 1,4-dichlorobenzene, (p-dichlorobenzene) C6H4Cl2 12 2 60 10 Skin
185. 200-863-5 75-34-3 1,1-Dichloroethane CH3CHCl2 412 100 - - Skin
186.   107-06-2 1,2-Dichloroethane C2H4Cl2 10        
187.   79-43-6 Dichloroacetic acid Cl2CHCOOH 4        
188.   102-36-3 3,4-Dichlorophenyl isocyanate   0.3        
189.   149-74-6 Dichloro-phenyl-methyl-silane (after HCL) C6H5SiCl2CH3 1        
190.   27137-85-5 2,5-Dichlorophenyltri-chlorosilane Cl2C6H3-SiCl3 1        
191.   84-69-5 Diisobutyl phthalate

(1,2-benzenedicarboxylic acid, diisobutylester)

C6H4(COOC4H9)2 1        
192. 204-697-4 124-40-3 Dimethylamine (CH3)2NH 3.8 2 9, 4 5 -
193.   1149-23-1 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylic acid diethyl ester

(2,6-dimethyl-3,5-diethoxycarbonyl-1,4-dihydropyridine,

diludine,

diethyl 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate)

2        
194. 204-826-4 127-19-5 N,N-Dimethylacetamide CH3CON(CH3)2 36 10 72 20 Skin
195.   108-01-0 2-(Dimethylamino) ethanol

(N,N-dimethyl-2-hydroxyethylamine,

N,N-dimethylethanolamine)

(CH3)2NCH2CH2OH 5        
196.   121-69-7 N,N-Dimethylaniline

(N,N-dimethylphenylamine)

(CH3)2N-C6H5 0.2        
197.   103-83-3 N,N-Dimethylbenzylamine C6H5CH2N(CH3)2 5        
198.   80-15-9 - -α α Dimethylbenzylhydroperoxide

(Cumolhydroperoxide)

C9H12O2 1        
199. 204-065-8 115-10-6 Dimethyl ether CH3-O-CH3 1920 1000 - - -
200.   576-26-1 2,6-Dimethylphenol

(2,6-Xylenol)

  2        
201.   68-12-2 N,N-dimethylformamide HCON(CH3)2 15 5 30 10 Skin
202.   131-11-3 Dimethyl phthalate

(1,2-benzenedicarboxylic acid, dimethyl ester)

C6H4(COOCH3)2 0.3        
203.   106-79-6 Dimethyl sebacate

(1,8-octanedicarboxylic acid dimethyl ester,

decanedioic acid dimethyl ester,

sebacic acid dimethyl ester)

CH3OOC(CH2)8COOCH3 10        
204.   77-78-1 Dimethyl sulphate (CH3)2SO4 0.1        
205.   75-18-3 Dimethyl sulphide H3C-S-CH3 50        
206.   120-61-6 Dimethyl terephthalate

(1,4-benzenedicarboxylic acid, dimethyl ester)

  0.1        
207.   110-71-4 1,2-dimethoxyethane

(ethylene glycol dimethyl ether)

CH3OCH2CH2OCH3 10        
208. 203-714-2 109-87-5 Dimethoxymethane (formaldehyde dimethylacetal, methylal) CH3OCH2OCH3 10        
209.   528-29-0 1,2-dinitrobenzene C6H4(NO2)2 1        
210.   99-65-0 1,3-dinitrobenzene C6H4(NO2)2 1        
211.   100-25-4 1,4-dinitrobenzene C6H4(NO2)2 1        
212.   25550-58-7 2,4-dinitrophenol   0.5        
213.   27478-34-8 Dinitronaphthalene (mixture of 1,5- and 1,8- isomers) C10H6(NO2)2 1        
214.   121-14 -2,606-20-2,610 -39-9 Dinitrotoluene (2, 4- and 2,6- and 3,4-isomers) (NO2)2C6H3CH3 1        
215.   84-76-4 Dinonylphthalate

(1,2-benzenedicarboxylic acid, dinonyl ester)

1        
216.   123-91-1 1,4-dioxane   20 5.5      
217.   122-62-3 Dioctyl sebacate

(octan-1,8-dicarboxilic acid dioctyl ester,

sebacic acid dioctyl ester,

bis(2-ethylhexyl) sebacate)

C8H17OOC(CH2)8COOC8H17 10        
218.   142-84-7 Dipropylamine (CH3CH2CH2)2NH 2        
219.   1335-47-3 Ditolylmethane (CH3C6H4)2CH2 1        
220.   112-53-8 Dodecyl alcohol

(dodecan-1-ol

lauryl alcohol)

CH3(CH2)10CH2OH 10        
221.   25991-86-0 dodecahydr-1,1'- carbonyl-bis-1H-azepin

bis-azepan-1-ylmethanone,

bis-N,N'-hexamethylene urea,

carboxide (pesticide))

  0.5        
222.   13463-40-6 Iron pentacarbonyl

(pentacarbonyliron)

Fe(CO)5 0.1        
223.     Iron ore

(iron agglomerate)

  4        
224.   7439-97-6 Mercury and its inorganic compounds (after mercury) Hg 0.02       Auditory effect
224.1   21908-53-2 Mercuric oxide (after mercury) HgO 0.02        
224.2   7487-94-7 Mercuric chloride (after mercury) HgCl2 0.02        
225.   107-15-3 + 58-55-9 Elixophylline

(theophylline + 1,2 ethylenediamine)

  0.5        
226.   106-89-8 Epichlorohydrin

(3-chloro-1,.2-epoxypropane)

C3H5ClO 1        
227.     Epoxide resins (after epichlorohydrin)   0.5        
228.   75-08-1 Ethanethiol

(ethyl mercaptan

C2H5SH 1        
229.   94-19-9 Etazole

amino-N-(5-ethyl-[1,3,4]thiadiazol-2-yl)-benzenesulfonamide,

sulfaethidiole

sulfaethylthiadiazole)

  1        
230.   108-24-7 Acetic acid anhydride CH3CO-O-COCH3 5        
231.   123-86-4 Acetic acid butyl ester

(n- butyl acetate)

CH3COOC4H9 200        
232. 205-500-4 141-78-6 Acetic acid ethyl ester (ethyl acetate) CH3COOC2H5  200 54 1468 400  
233.   140-88-5 Ethyl acrylate (2-propenoic acid ethyl ester, acrylic acid ethyl ester) H2C=CH-COOC2H5 10        
234. 200- 834-7 75-04-7 Ethylamine C2H5NH2 9.4 5 - - -
235. 202-849-4 100-41-4 Ethylbenzene C6H5C2H5 442 100 884 200 Skin;

Auditory effect

236.   74-96-4 Ethyl bromide

(bromoethane)

CH3CH2Br 5        
237.   110-80-5 Ethyl cellosolve (ethylene glycol monoethyl ether, 2-ethoxyethanol) C2H5-O-CH2CH2OH 8 2     Skin
238.   107-15-3 Ethylenediamine

(1,2-diaminoethane)

NH2CH2CH2NH2 2        
239. 203-473-3 107-21-1 Ethylene glycol,

(1,2-ethanediol)

HOCH2-CH2OH 52 20 104 40 Skin
240.   818-61-1 Ethyleneglycol monoacrylester

(propenoic acid 2-hydroxyethyl ester)

CH2=CHCOOCH2CH2OH 0.5        
241.   151-56-4 Ethyleneimine

(aizirdine)

  0.02        
242.   75-21-8 Ethylene oxide

(oxirane)

  1        
243.   74-85-1 Ethylene CH2=CH2 100        
243.1 203-234-3 104-76-7 2-ethylhexan-1-ol (2-Ethyl-1-hexanol, 2-ethylhexyl alcohol) CH3(CH2)3CH(CH2CH3)CH2OH 5.4 1      
244. 200-830-5 75-00-3 Ethyl chloride

(chloroethane)

CH3CH2Cl 50 19 268 105  
245.     N-butyl-N-ethyl-S-propylthiocarbamate

(tillam)

(C2H5)N(C4H9)C(O)SC3H7 1        
246.   64-17-5 Ethyl alcohol

(ethanol)

C2H5OH 1000        
247. 200-580-7 64-19-7 Acetic acid (ethanoic acid) CH3COOH 25 10 50 20  
247.1   111-15-9 2-ethoxyethyl acetate C6H12O3 11 2     Skin
248.   106-74-1 2-ethoxyethyl acrylate

(acrylic acid 2-ethoxyethyl ester

2-propenoic acid 2-ethoxyethyl ester)

CH2=CHCOOCH2CH2OC2H5 5        
249.   85-01-08 Phenanthrene   0.8        
250. 202-705-0 98-83-9 2-phenylpropene (isopropylbenzene

α-methylstyrene)

C6H5C(CH3)=CH2 246 50 492 100 -
251.   80-15-9 2-phenyl-2-propylhydroperoxide

(cumene hydroperoxide, cumyl hydroperoxide,

isopropylbenzene hydroperoxide,

α,α-dimethylbenzyl hydroperoxide)

  1        
252.   58-15-1 2-phenyl-4-dimethylamino-1,5-dimethyl-1,2-dihydropyrazol-3-one

(amidopyrin

piramidon)

  0.5        
253.   140-29-4 Phenylacetonitrile

(benzyl cyanide)

C6H5CH2CN 0.8        
254.   6017-21-6 Phenylazomalondinitrile

(2-phenylazomalononitrile,

Phenylhydrazonomalononitrile)

C6H5-N=NCH(CN)2 0.1        
255.   108-45-2 m-Phenylene diamine

(1,3-phenylenediamine)

  0.1        
256.   95-54-5 o-phenylenediamine

(1,2-phenylenediamine)

  0.5        
257.   106-50-3 p-phenylenediamine

(1,4-phenylenediamine)

  0.05        
258.   3006-93-7 N, N'-1,3-Phenylenedimaleimide

(N,N'-(m-phenylene) disuccinimide)

1,1'-(1,3-Phenylene)bis(1H-pyrrole-2,5-dione))

  1        
259.   103-71-9 Phenyl isocyanate C6H5N=C=O 0.5        
260.   1007-36-9 N-Phenyl-N'-methylurea C6H5NHCONHCH3 3        
261.   122-59-8 Phenoxyacetic acid C6H5OCH2COOH 1        
262.   713-68-8 m-Phenoxyphenol

(3-Phenoxyphenol)

  1        
263. [1 February 2011]
264. 203-632-7 108-95-2 Phenol (hydroxybenzene) C6H5OH 8 2 16 4 Skin
265.     Fluorides, inorganic By F 2.5 - - - -
266. 231-954-8 7782-41-4 Fluorine F2 1.58 1 3.16 2 -
267.   430-57-9 1-Fluorine-1,2-dichloroethane

(1,2-dichlorofluoro-ethane,

freon 141)

HClFC-CClH2 1000        
268.   75-69-4 Trichloro-fluoro-methane

(Freon 11)

Cl3FC 1000        
269. 231-634-8 7664-39-3 Hydrogen fluoride HF 1.5 1.8 2.5 3 -
270.     Hydrofluoric acid salts (after F):

* tin, ammonium, barium, zinc, potassium, lithium , sodium, silver fluorides, ammonium, hydrofluoride, trisodium hexafluoroaluminate,

* aluminum, chrome, magnesium, calcium, strontium, copper

  0.2

0.5

  1

2.5

   
271.   50-00-0 Formaldehyde

(methanal)

HCHO 0.5        
272. 232-260-8 7803-51-2 Phosphine PH3 0.14 0.1 0.28 0.2  
273. 233-060-3 10026-13-8 Phosphorus (V) chloride

(phosphorus pentachloride)

PCl5 1 - - - -
274. 215-236-1 1314-56-3 Phosphorus (V) oxide,

(diphosphorus pentaoxide,

phosphorus pentaoxide)

P2O5 1 - - - -
275.   10025-87-3 Phosphorus oxychloride

(phosphoryl trichloride)

POCl3 0.05        
276. 215-242-4 1314-80-3 Phosphorus(V) sulphide,

(diphosphorus pentasulphide)

P4S10 1 - - - -
277.   7719-12-02 Phosphorus trichloride PCl3 0.2        
278. 231-633-2 7664-38-2 Phosphoric acid (orthophosphoric acid) H3PO4 1 - 2 - -
279.   7723-14-0 Phosphorus P 0.03        
280. 200-870-3 75-44-5 Phosgen

(carbonyl dichloride)

COCl2 0.08 0.02 0.4 0.1 -
281.   85-44-9 Phthalic anhydride

(1,2-benzenedicarboxylic acid, anhydride)

  1        
282.   59-87-0 Furacilin

(nitrofural,

5-nitrofuranyl semicarbazone)

  0.5        
283.   67-20-9 Furadonin

(N-(5-Nitro-2-furfurylidene)-1-aminohydantoin,

nitrofurantoin)

  0.5        
284.   1672-88-4 Furagin

(N-[(5'-nitro-2'-furyl)acrylidene]-1-aminohydantoin,

N-[2-(5'-nitrofuryl-2)-2-propenylidine]-1-amino-hydantoin)

  5        
285.   110-00-9 Furan   0.5        
286.   67-45-8 Furazolidone

(3-(5-nitrofurfurylidenamino)-2-oxazolidinone)

0.5        
287.   98-00-0 Furfuryl alcohol

(2-Hydroxymethylfuran)

  0.5        
288.   98-01-01 Furfural

(2-formylfuran,

2-furancarboxaldehyde)

  10        
289.   357-70-0 Galantamine

(herban,

nururon,

nivalin)

C17H21NO3 0.05        
290.   12024-21-4 Gallium oxides Ga2O3 and Ga2O 3        
291.   10038-98-9 Germanium (IV) chloride (after germanium) GeCl4 1        
292.   1310-53-8 Germanium dioxide

(germanium (IV) oxide)

GeO2 2        
293.   7782-65-2 Germanium tetrahydride

(germane)

GeH4 5        
293.1 200-240-8 55-63-0 Glyceryl trinitrate (nitroglycerin) C3H5(NO3)3 0.095 0.01 0.19 0.02 Skin
294.   111-30-8 Glutaraldehyd

(glutaric acid dialdehyde,

1,5-pentanedial)

OHC(CH2)3CHO 5        
295.   116-16-5 Hexachloroacetone

(hexachloropropanone)

Cl3CCOCCl3 0.5        
296.   118-74-1 Hexachlorobenzene C6Cl6 0.9        
297.   999-97-3 Hexamethyldisilazane (CH3)3SiNHSi(CH3)3 2        
298.   124-09-4 Hexamethylenediamine

(1,6-hexanediamine,

1,6-diaminohexane)

(NH2CH2CH2CH2)2 0.1        
299.   822-06-0 Hexamethylene diisocyanate

(1,6-diisocyanatohexane)

OCN(CH2)6NCO 0.05        
300.   111-49-9 Hexamethyleneimine

(homopiperidine,

perhydroazepine)

  0.5        
301. 203-777-6 110-54-3 n-Hexane C6H14 72 20     Auditory effect
302. 205-563-8 142-82-5 n-Heptane CH3(CH2)5CH3 350 85 2085 500 -
303. 203-767-1 110-43-0 2-Heptanone

(methyl pentyl ketone,

Methyl-amyl-ketone)

CH3-CO-C5H11 238 50 475 100 Skin
304. 203-388-1 106-35-4 3-Heptanone (ethylbutylcetone) C2H5-CO-C4H9 95 20 - - -
305.   2499-58-3 Heptyl acrylate

(propenoic acid, heptyl ester,

acrylic acid, heptyl ester)

H2C=CHCOO(CH2)6CH3 1        
306.   111-70-6 Heptyl alcohol

(heptanol)

CH3(CH2)5CH2OH 10        
307.   38066-16-9 Heterophos

(O-ethyl O-phenyl S-propyl phosphorothioate,

diethyl ((phenylthio)methyl)phosphonate)

C11H17O3PS 0.02        
308.   302-01-2 Hydrazine NH2NH2 0.1        
308.1 262-967-7 61788-32-7 Hydrogen terphenyl (hydrogenated diphenylbenzenes) (C6H7)3 19 2 48 5  
309.   109-78-4 3-Hydroxypropionitrile

(2-Cyanoethanol)

  10        
310.   31282-04-9 Hygromycin B

(antihelmycin)

C20H37N3O13 0.001        
311.   91-22-5 Quinoline   0.1   0.5    
312.   627-30-5 3-Chloro-1-propanol

(1-chloro-3-hydroxypropane,

trimethylene chlorohydrin)

Cl(CH2)3OH 2        
313.   19210-21-0 2-Chloro-1-propanol CH3CH(Cl)CH2OH 2        
314.   97-00-7 1-chloro-2,4-dinitro-benzene

(2,4-dinitrochlorobenzene)

  0.05        
315.   127-00-4 1-Chloro-2-propanol

(propylene chlorohydrin)

CH3CH(OH)CH2Cl 2        
316.   118-97-8 4-chloro-3,5-dinitro-benzoic acid   1        
317. 203-628-5 108-90-7 Chlorobenzene

(monochlorbenzene)

C6H5Cl 23 5 70 15 -
318.   106-48-9 4-chlorophenol ClC6H4OH 1        
319.   01/10/1120 9-chlorononanoic acid

(chloropelargonic acid)

ClCH2(CH2)7COOH 5        
320. 200-663-8 67-66-3 Chloroform

(trichloromethane)

CHCl3 10 2 - - Skin
321.   107-94-8 3-chloropropanoic acid ClCH2CH2COOH 5        
322.   598-78-7 2-chloropropanoic acid

(α -chloropropionic acid)

CH3CH(Cl)COOH 2        
323. 231-959-5 7782-50-5 Chlorine Cl2 1 0.3 1.5 0.5  
324.   57-62-5 Chlortetracycline C22H23ClN2O8 0.1        
325.   95-49-8 and 106-43-4 Chlorotoluene (o- and p-isomers) CH3C6H4Cl 10        
326. 231-595-7 7647-01-0 Hydrogen chloride HCl 8 5 15 10 -
327.     Chrome, metallic (insoluble inorganic chromium (II) chromium (III) compounds)   2        
328.   7789-04-0 Chromium (III) phosphate after chromium

(chromium orthophosphate after chromium)

CrPO4 2        
329.   1333-82-0 Chromium (VI) oxide

(chromium trioxide)

CrO3 0.01        
330.     Chromium dihydrogen phosphate, after chromium Cr(H2PO4)3 0.02        
331.   10060-12-5 Chromium trichloride hexahydrate, after chromium CrCl3. 6H2O 0.01        
332.   1308-38-9 Chromium (III) oxide, after chromium Cr2O3 1        
333.   7783-20-2 + 7732-18-5 Chromium-ammonium sulphate, after Cr

(chromium-ammonium alum)

Cr2(SO4)3. (NH4)2SO4. 24H2O 0.02        
334.   24613-89-6 Chromates,

(dichromates), after chromium

Me2CrO4 vai Me2Cr2O7 0.01        
335. 204-662-3 123-92-2 Isoamyl acetate

(isopentyl acetate,

acetic acid 3-methylbutyl ester,

3-Methylbutyl acetate,

isopentyl ethanoate)

CH3COOCH2CH2CH(CH3)2 270 50 540 100 -
336.   123-51-3 Isoamylalcohol,

(3-methyl-1-butanol,

isopentyl alcohol)

(CH3)2CHCH2CH2OH 5        
337.   121-91-5 Isophthalic acid

(1,3-Benzenedicarboxylic acid)

  0.2        
338. 201-142-8 78-78-4 Iso-pentane H3C-CH2-CH(CH3)2 3000 1000      
339.   78-79-5 Isoprene

(2-methyl-1,3-butadiene)

  40        
340.   67-63-0 Isopropanol

(2-propanol,

isopropyl alcohol,

1-methyl-1-ethanol)

CH3CH(OH)CH3 350   600    
341. 201-245-8 80-05-7 4,4'-Isopropylidenediphenol (bisphenol A) (CH3)2C(C6H4OH)2 25 - - -  
342.   7553-56-2 Iodine I2 1        
343.   2223-93-0 Cadmium stearate (CH3(CH2)16COO)2Cd 0.1        
344.   7440-43-9 Cadmium and its inorganic compounds   0.01   0.05    
345.   156-62-7 Calcium cyanamide CaNCN 1        
346.   7789-75-5 Calcium fluoride CaF2 0.5   2.5    
347.   7757-93-9 Calcium hydrogen phosphate CaHPO4 10        
348. 215-137-3 1305-62-0 Calcium hydroxide, (calcium dihydroxide) Ca(OH))2 16 - 46    
349.   7758-23-8 Calcium dihydrogen phosphate Ca(H2PO4)2 10        
350.   10043-52-4 Calcium chloride CaCl2 2        
351.   471-34-1 Calcium carbonate CaCO3 6        
352.     Calcium nickel chromium phosphate (after nickel)   0.005        
353. 215-138-9 1305-78-8 Calcium oxide CaO 16   46    
353.1   7778-18-9 Calcium sulfate (hydrogenated; gypsum dust) CaSO4x2H2O 4        
354.     Potassium alkylxanthate, R=alkyl: isopropyl-, isobutyl-, isoamyl-e

(potassium O-alkyldithiocarbonate, R-alkyl: isopropyl-, isobutyl-, isoamyl-)

KSCSO-R 1        
355.   871-58-9 Potassium butylxanthate

(Carbonic acid, dithio-, O-butyl ester)

KSCSO-C4H9 10        
355.1 205-792-3 151-50-8 Potassium cyanide (after cyanide) KCN 1   5   Skin
356.   140-89-6 Ethyl potassium xanthogenate

(Potassium O-ethyl dithiocarbonate)

KSCSO-C2H5 0.5        
357.   16871-90-2 Potassium fluorosilicate (after fluorine)

(dipotassium hexafluorosilicate)

K2[SiF6] 0.2        
358.   14459-95-1 Tetrapotassium hexacyanoferrate (II)

(yellow prussiate of potash)

K4[Fe(CN)6] 4        
359.   13746-66-2 Tripotassium hexacyanoferrate (III)

(red prussiate)

K3[Fe(CN)6] 4        
360.   3811-04-09 Potassium chlorate KClO3 5        
361.   7447-40-7 Potassium chloride KCl 5        
362.   584-08-7 Potassium carbonate K2CO3 2        
363.   7757-79-1 Potassium nitrate KNO3 5        
364.   7778-80-5 Potassium sulphate K2SO4 10        
365.   21368-68-3 Camphor

(DL-bornan-2-one,

1,7,7-trimethylbicyclo(2,2,1)heptan-2-one)

C10H16O 3        
366. 203-313-2 105-60-2 e ε - Caprolactam (dust and vapour)

(e ε - aminocaproic acid lactam)

10 - 40 - -
367.   142-62-1 Caproic acid

(hexanoic acid)

CH3(CH2)4COOH 5        
368.   655-35-6 Carbocromen

(intencordin,

Iintensain,

ethyl -[[3-[2-(diethylamino)ethyl]-4-methyl-2-oxo-2H-1-benzopyran-7-yl]oxy]acetate hydrochloride)

C20H27NO5 . HCl 0.3        
369.   1302-76-7 Kyanite

(aluminium oxide with silicon dioxide admixture)

Al2O5Si 2        
370.   50-29-3 Clofenotane (INN)

(1,1,1-trichloro-2,2-bis (4-chlorophenyl)-ethane,

dichloro-diphenyl-trichloroethane (DDT),

p,p'-DDT (4,4'-DDT),

1,1-bis-(4-chlorophenyl)-2,2,2-trichloroethane)

(ClC6H4)2CHCCl3 0.1        
371.     Cobalt hydrocarbonyl and cleavage product thereof (after Co) Co(CO)4H 0.01        
372.   1307-96-6 Cobalt II oxide CoO 0.5        
373.   1308-04-9 Cobalt III oxide Co2O3 0.5        
374.   7440-48-4 Cobalt Co 0.5        
375.   58-08-02 Caffeine

(1,3, 7 - trimethylxanthine)

  0.5        
376.   8050-09-7 Colophony   4        
377.     Dyes: vinyl sulphone and chloro thiasine   2        
378.     Dyes: anthraquinone and phtalocyanine   5        
379.     Dyes, alkaline: arylmethane   0.2        
380.     Dyes, vat dyes: binaphthyl hexacarboxylic acid dianhydride derivatives   5        
381. 215-293-2 1319-77-3 Cresol,

(all isomers)

(o-, m-, p-methylphenols, cresol mixture

22 5 - - -
382.   10453-89-1 Chrysanthemumic acid

(2,2-Dimethyl-3-(2-methyl-1-propenyl) cyclopropane-1-carboxylic acid)

  10        
383.   437-74-1 Xanthinol nicotinate

(7-[2-hydroxy-3-((2-hydroxyethyl)-N-methylamino] propyl) theophylline nicotinate)

  1        
384. 215-535-7 1330-20-7 Xylene

(o-, m-, p-xylene,

dimethylbenzene)

221 50 442 100 Skin
385. 203-576-3 108-38-3 m-xylene,

(1,3-dimethylbenzene)

C8H10 221 50 442 100 Skin
386. 202-422-2 95-47-6 o-xylene,

(1,2-dimethylbenzene)

C8H10 221 50 442 100 Skin
387. 203-396-5 106-42-3 p-xylene,

(1,4-dimethylbenzene)

C8H10 221 50 442 100 Skin;

Auditory effect

388. 202-704-5 98-82-8 Cumene

(isopropylbenzene,

propylbenzene)

100 20 250 50 Skin;

Auditory effect

389.   25038-59-9 Lavsan

(polyethylene terephtalate,

terylene)

  5        
390.   9013-95-0 Levan

(polysaccharide )

(C6H10O5)n 1        
391.   56-75-7 Levomycetin   1        
392.   8032-32-4 Ligroine (after C)

Petroleum ether

  300        
393.   64742-82-1 Ligroine (naphtha, Hydrodesulfurized heavy; naphtha treated with hydrogen with low boiling point)

(white spirit,

white spirit)

  200   300    
394.   9001-62-1 Lipase

(triacylglycerol)

  1        
395. 231- 484-3 7580-67-8 Lithium hydride LiH - - 0.025    
396.   12007-25-9 Magnesium diboride (after boron) MgB2 1        
397.   10326-21-3 Magnesium chlorate Mg(ClO3)2 5        
398.   12230-32-9 Magnesium polyboride

(Magnesium dodecaboride)

MgB12 6        
399.     Magnesium- manganese ferrite MgMn(FeO2)4 1        
400.   108-31-6 Maleic anhydride

(maleinanhydride,

1,2-ethylendicarbonic acid anhydride)

  1        
401.   1313-13-9 Manganese dioxide (disintegration aerosol) MnO2 0.3        
401.1     Manganese and its inorganic compounds (after manganese)   0.25

0.056

       
402.   07/05/3353 Manganese distearate [CH3(CH2)16COO]2Mn 3        
403.   12108-13-3 Manganese cyclopentadienyl tricarbonyl

(Tricarbonyl(methylcyclopentadienyl)manganese)

  0.1        
404.   12427-38-2 Manganese, ethylene-N,N-bis-dithiocarbamate

(maneb)

  0.5        
405.     Manganese-zinc ferrite MnZn(FeO2)4 1        
406.   7439-96-5 Manganese welding aerosol (condensation aerosol)   0.1        
407.   8065-48-3 Mercaptophos

(demeton,

O,O-diethyl-O''-(2-ethylthioethyl) thiophosphate and O,O'-diethyl-S-(2-ethylthioethyl) thiophosphate mixture)

C2H5SCH2CH2OPS(OC2H5)2 and C2H5SCH2CH2SPO(OC2H5)2 0.02        
408.   79-39-0 Methylacrylic amide

(2-methylpropionic acid amide

CH2=C(CH3)CONH2 1        
409.   79-41-4 Methacrylic acid

(2-2-methylpropionic acid)

CH2=C(CH3)COOH 10        
410.   760-93-0 Methacrylic acid anhydride

(2-methylpropenoic acid anhydride,

methacrylic anhydride)

  1        
411.   920-46-7 Methacrylic acid chloroanhydride

(methacrylic chloride,

2-methylpropenoic acid chloroanhydride)

CH2=C(CH3)COCl 0.3        
412.   74-93-1 Methanethiol

(methyl mercaptan)

CH3SH 0.8        
413. 200-659-6 67-56-1 Methanol

(methyl alcohol,

carbinol)

CH3OH 260 200 - - Skin
414.   1569-50-2 3-Methyl-3-buten-1-ol

(3-Penten-3-ol,

2,2-dimethylvinylcarbinols)

10        
415.   80-59-1 2-methylbut-2-enoic acid

2-methylcrotonic acid,

2,3-dimethylacrylic acid)

CH3CH=C(CH3)COOH 5        
416.   638-10-8 3-methylbut-2-enoic acid ethyl ester

(3,3-dimethylacrylic acid ethyl ester,

crotonic acid, 3-methyl-, ethyl ester)

(CH3)2C=CHCOOCH2CH3 10        
417.   3425-61-4 2-hydroperoxy-2-methyl-butane

(tert-Pentyl hydroperoxide)

  5        
418.   79-20-9 Methyl acetate

(acetic acid, methyl ester)

CH3COOCH3 100        
419.   96-33-3 Methyl acrylate (methyl propenoate, acrylic acid, methyl ester, propenoic acid, methyl ester) CH2=CHCOOCH3 18 5 36 10  
420.   74-83-9 Methyl bromide

(bromomethane)

CH3Br 1        
421. 210-946-8 626-38-0 1-Methylbutyl acetate,

(1-methylbutyl ethanoate)

CH3COOCH(CH3)CH2CH2CH3 270 50 540 100 -
421.1 203-481-7 107-31-3 Methyl formate (formic acid methyl ester) HCOOCH3 125 50 250 100 Skin
422. 203-737-8 110-12-3 5-Methyl-2-hexanone

(isopentyl methyl ketone,

isoamyl methyl ketone,

isobutyl acetone)

(CH3)2CHCH2CH2COCH3 95 20 - - -
423. 208-793-7 541-85-5 5-Methyl-3-heptanone

(ethylisoamylketone)

CH3CH2CH(CH3)CH2COCH2CH3 53 10 107 20 -
424. 203-550-1 108-10-1 4-Methyl-2-pentanone,

(isobutyl methyl ketone,

methylisobutylketone,

isopropyl acetate)

CH3C(O)CH2CH(CH3)CH3 83 20 208 50 -
425.   872-50-4 1-Methyl-2-pyrrolidinone (N-Methyl-2-pyrrolidone) C5H9NO 40 10 80 20 Skin
426. 208-601-1 534-52-1 2-methyl-4,6-dinitro-phenol

(4,6-Dinitro-o-cresol,

DNOC)

(CH3) C6H2(NO2)2OH 0.05        
427.   74-95-3 Methylene bromide

(dibromomethane)

CH2Br2 10        
428. 200-838-9 75-09-2 Methylene chloride (dichloromethane) CH2Cl2 120 34 150 42 Skin
429.   74-87-3 Methyl chloride

(chloromethane)

CH3Cl 0.1        
429.1 205-599-4 143-33-9 Sodium cyanide (after cyanide) NaCN 1   5   Skin
430.   624-83-9 Methylisocyanate CH3N=C=O     0.05 0.02  
431.   563-80-4 Methyl isopropyl ketone

(3-Methyl-2-butanone)

CH3C(O)C(CH3)CH3 200        
432.   556-61-6 Methyl isothiocyanate CH3N=C=S 0.1        
433.   8022-00-2 Methyl mercaptophos (demeton-methyl, O,O'-dimethyl-O''-(2-ethylthioethyl) thiophosphate and dimethyl-S-(2-ethylthioethyl) thiophosphate mixture) S=P(OCH3)2-O-(CH2)2S-C2H5 and S=P(OCH3)2-S-(CH2)2S-C2H5 0.1        
434.   80-62-6 Methyl methacrylate

2-methyl-2-propenoic acid methyl ester,

methyl 2-methylpropenoate)

CH2=C(CH3)COOCH3 10        
435.   25013-15-4 Methylstyrene (mixed isomers)

(vinyltoluene,

vinylbenzene)

CH2=CH-C6H4CH3 50       Auditory effect
436.   98-83-9 α---Methylstyrene

(2-phenylpropene)

  5        
437.   598-50-5 Methylurea

(N-Methylurea)

CH3NHC(O)NH2 10        
438.   78-94-4 Methyl-vinyl-ketone

(3-butene-2-one)

  0.1        
439.     Welding aerosol   4        
439.1   110-49-6 2-Methyoxyethyl acetate C5H10O3   1     Skin
439.2   109-86-4 2-Methoxyethanol C3H8O2   1     Skin
440. 203-603-9 108-65-6 2-methoxy-1-methylethyl acetate (propylene glycol monomethyl ether acetate) CH3COOCH(CH3)CH2OCH3 275 50 550 100 Skin
441. 252-104-2 34590-94-8 Methoxyisopropoxy propanol (dipropylene glycol monomethyl ether, DMP) CH3OC3H6OC3H6OH 308 50 - - Skin
442. 203-539-1 107-98-2 1-Methoxy-2-propanol

(propylene glycol monomethyl ether, monopropylene glycol methyl ether)

CH3CH(OH)CH2OCH3 375 100 568 150 Skin
443.   586-37-8 m-Methoxyacetophenone

(3-acetylanisole,

3-acetylmethoxybenzene)

  3        
444. 203-906-6 111-77-3 2-(2-methoxyethoxy)ethanol C5H12O3 50.1 10     Skin
445. 203-604-4 108-67-8 Mesitylene

(1,3,5-trimethylbenzene)

100 20 - - -
446.   79-11-08 Monochloroacetic acid

(chloroacetic acid)

ClCH2COOH 1        
447.   79-04-09 Monochloroacetic acid chloroanhydride

(chloroacetyl chloride)

CH2ClCOCl 0.3        
448. 203-815-1 110-91-8 Morpholine C4H9NO 36 10 72 20  
449. 202-049-5 91-20-3 Naphthalene 50 10 - - -
450.   8030-30-6 Petroleum   10        
451.     Mineral oils, petroleum mineral oils   5        
452.   1141-38-4 2,6-Naphthalenedicarboxylic acid   0.1        
453.   93-09-4 2-Naphthalenecarboxylic acid

(2-naphthoic acid)

  0.1        
454.   128-97-2 1,4,5,8-Naphthalenetetracarboxylic acid   0.5        
455.   130-15-4 1,4-Naphthoquinone   0.1        
456.   90-15-3 1-Naphthol

(1-hydroxynaphthalene,

   α-naphthol)

  0.5        
457.   135-19-3 2-Naphthol

(2-hydroxynaphthalene,

  β-naphthol)

  0.1        
458. 247-852-1 26628-22-8 Sodium azide NaN3 0.1 - 0.3 - Skin
459.   4312-97-4 Sodium cis- β -chloroacrylate

(acrofol,

cis-3-Chloroacrylic acid sodium salt,

cis-3-chloropropenoic acid sodium salt, sodium 3-chloroacrylate)

  0.5        
460.   16893-85-9 Sodium hexafluorosilicate Na[SiF6] 0.2        
461.   144-55-8 Sodium hydrogencarbonate

(baking soda)

NaHCO3 5        
           
462.   1310-73-2 Sodium hydroxide

(soda lye,

caustic soda)

NaOH 0.5        
463.   7775-09-09 Sodium chlorate NaClO3 5        
464.   7647-14-5 Sodium chloride NaCl 5        
465.   7758-19-2 Sodium chlorite NaClO2 1        
466.   137-42-8 Sodium N-methyldithiocarbamate

(methyldithiocarbamate,

methyldithiocarbamic acid, sodium salt,

carbathione)

CH3-NH-C(S)SNa 0.1        
467.   131-52-2 Sodium pentachlorophenolate C6Cl5ONa 0.1        
468.   10332-33-9 Sodium perborate monohydrate NaBO3 . H2O 1        
469.   10486-00-7 Sodium perborate tetrahydrate NaBO3 . 4H2O 1        
470.   540-72-7 Sodium rhodanide

(sodium thiocyanate)

NaSCN 10        
471.   7757-82-6 Sodium sulphate Na2SO4 10        
472.   1313-82-2 Sodium sulphide Na2S 0.2        
473. 207-343-7 463-82-1 Neopentane C5H12 3000 1000      
474. 200-193-3 54-11-5 Nicotine,

(3-(1-Methyl-2-pyrrolidinyl) pyridine

0.5 - - - Skin
475.   59-67-6 Nicotinic acid

(pyridine-3-carboxylic acid)

  1        
476.   98-92-0 Nicotine acid amide

(pyridine-3-carboxylic acid amide, nicotinamide)

  1        
477.   7440-02-0 Nickel, nickel oxides, sulphides and compounds (after Ni) Ni 0.05        
478.   13977-71-4 Nickel chromophosphate NiCr(H2PO4)6 . H2O 0.005        
479.   13463-39-3 Nickel carbonyl

(tetracarbonyl nickel)

Ni(CO)4 0.0005        
480.   53025-58-4 Nitro   4        
481.   88-74-4 2-nitroaniline

(o-nitroaniline)

  0.5        
482.   99-09-2 3-nitroaniline

(m-nitroaniline)

  0.1        
483.   100-01-6 4-nitroaniline

(p-nitroaniline)

  0.1        
484.   100-17-4 4-nitroanisole

(1-Methoxy-4-nitrobenzene)

3        
485. 202-716-0 98-95-3 Nitrobenzene 1 0.2 - - Skin
486.   585-79-5 m-Nitrobromobenzene

(1-Bromo-3-nitrobenzene)

  0.1        
487. 201-188-9 79-24-3 Nitroethane CH3CH2NO2 30 9.6 312 100 Skin
488.   75-52-5 Nitromethane CH3NO2 30        
489.   88-72-2 99-08-1 99-99-0 Nitrotoluene

(o-, m-, p-isomers)

  3        
490.   502-56-7 Nonan-5-one CH3(CH2)7CO(CH2)3CH3 20        
491.   143-08-8 Nonyl alcohol

(nonanol)

CH3(CH2)7CH2OH 10        
492. 204-696-9 124-38-9 Carbon dioxide CO2 9000 5000 - - -
493. 211-128-3 630-08-0 Carbon (II) oxide (carbon monoxide, carbon monoxide gas) CO 20 17 117 100 Auditory effect
494.     Carbon dust            
    - coal, anthracite and other coal dust, petroleum, coke, bituminous shale, black industrial soot   4        
    - natural and artificial diamonds, graphite   2        
495.     Hydrocarbons, saturated aliphatic, C1-10 after C

(alkanes)

CnH2n+2 100   300    
496.   66-79-5 Oxacillin C19H19N3O5S 0.05        
497.   111-87-5 Octyl-alcohol

(octanol)

CH3(CH2)6CH2OH 10        
498.   7060-74-4 Oleandomycin phosphate C35H61NO12.H3PO4 0.4        
499.   10028-15-6 Ozone O3 0.1        
500.   422-64-0 Propanoic acid, pentafluoro- CF3CF2COOH 2        
501. 203-692-4 109-66-0 Pentane C5H12 3000 1000      
502.   8006-61-9 Kerosene   100   300    
503. 201-865-9 88-89-1 Picric acid,

(2,4,6-trinitrophenol)

0.1 - - - -
504. 203-808-3 110-85-0 Piperazine

(diethylenediamine XE "diethylenediamine")

0.1 - 0.3 - -
505.   110-89-4 Piperidine   0.2        
506. 232-319-8 8003-34-7 Pyrethrins and pyrethroids

(pyrethrum (purified from sensitising lactones))

Multicomponent insecticide of plant origin 1 - - - -
507. 203-809-9 110-86-1 Pyridine 15 5 - - -
508.   123-75-1 Pyrrolidine   0.1        
509. 231-116-1 04/06/7440 Platinum (metal) Pt 1 - - - -
510.     Polymer dust: (polyamide, polyformaldehyde, polycaprolactam, polyethylene, polymers in the basis of which there are acrylic monomers, polypropene, polyurethane etc.)   5        
511.   107-19-7 Propargyl alcohol

(2-Propyn-1-ol)

1        
511.1   74-98-6 Propene CH3CH2CH3 1800 1000      
512. 201-176-3 79-09-4 Propanoic acid

(propionic acid)

C2H5COOH 31 10 62 20 -
513.   109-60-4 Propyl acetate

(acetic acid, propyl ester)

CH3COOC3H7 200        
514.   107-10-8 Propylamine

(n-propylamine)

NH2C3H7 5        
515.   108-32-7 Propylene carbonate

(1,2-Propanediol cyclic carbonate)

  2        
516.     Propylene glycol monoacrylate CH2=CHCOO-CH2-CH2OH-CH3 1        
517.   57-55-6 propylene glycol

(1,2-propanediol)

CH3CH(OH)CH2OH 7        
518.   75-56-9 Propylene oxide

(methyloxirane,

1,2-epoxypropane)

  1        
519.   115-07-1 Propylene

(propene)

CH2=CH-CH3 100        
520.   106-36-5 Propyl propionate

(propionic acid propyl ester)

CH3CH2COOC3H7 70        
521.   71-23-8 Propyl alcohol

(1-propanol)

CH3CH2CH2OH 10        
522.   123-38-6 Propionaldehyde

(propanal)

CH3CH2CHO 5        
523.     Dust of plant and animal origin:            
    sugar dust   5        
    grain dust   4        
    cotton, linen, wool, piles etc. (with an admixture of silicon dioxide):

* more than 10 %

* less than 10 %

  2 4        
    flour dust   6        
    wood dust   6        
    peat dust   5        
    hardwood dust   5        
    paper dust   2        
  8037-19-2 tobacco dust   3        
    tea dust   3        
524.     Yeast (dry)   0.3        
525. 203-585-2 108-46-3 Resorcinol

(1, 3-dihydroxybenzene, benzene-1,3-diol)

45 10 - - Skin
526.   83-88-5 Riboflavin

(vitamin B2)

C17H20N4O6 1        
527.   13292-46-1 Rifampicin

(rimactane)

  0.02        
528.   111-20-6 Sebacic acid

(1,8- octane dicarboxylic acid)

HOOC(CH2)8COOH 4        
529. 231-978-9 7783-07-5 Hydrogen selenide H2Se 0.07 0.02 0.17 0.05 -
530. 231-195-2 7446-09-5 Sulphur (IV) oxide (sulphur dioxide) SO2 1.3 0.5 2.7 1  
531.   7446-11-9 Sulphur (VI) oxide

(sulphuric anhydride,

sulphur trioxide)

SO3 1        
532.   10025-67-9 Sulphur monochloride

(disulphur dichloride)

S2Cl2 0.3        
533.   75-15-0 Carbon disulphide CS2 15 5     Skin;

Auditory effect

534.   7704-34-9 Sulphur S 6        
535.   7664-93-9 Sulphuric acid3 (mist defined as the thoracic fraction) H2SO4 0.05        
536.   7783-06-4 Hydrogen sulphide H2S 7 5 14 10  
537.     Hydrogen sulphide mixed with hydrocarbons C1-C5   3        
538.   7631-86-9 Silicon dioxide SiO2 1        
539.   409-21-2 Silicon carbide SiC 6        
540.   12033-89-5 Silicon nitride

(trisilicon tetranitride)

Si3N4 6        
541.   12007-81-7 Silicon tetracboride

(tetraboron silicide)

SiB4 6        
542.     Silicon and copper alloy   4        
543.     Silicates and aluminosilicates:            
    abrasive dust   2        
    bauxite agglomerate   2        
    mica, phlogopite, muscovite, talc, talc type dust   4        
    artificial mineral fibres with silicate and aluminosilicate glassy structure (glass-fiber, glass-wool, slag and mineral wool etc.)   2        
    Mineral fibres, including rock wool, glass fibre   3 sol/cm3 air        
    cement, apatite, clay   6        
    glassy silicates of volcanic origin (tuff, pemza, perlite)   4        
    zeolites (artificial and natural)   2        
    pottery   2        
  16389-88-1 dolomite   6        
544.   77348-01-7 Sylvinite Cl2KNa 5        
545.     Synthetic detergents   5        
546. 205-634-3 144-62-7 Oxalic acid

(ethanedioic acid)

HOOCCOOH 1 - - - -
547.     Mixture of dialkyl diesters of oxalic acid

(dialkyloxalates)

  0.5        
548. 200-579-1 64-18-6 Formic acid

(methanoic acid)

HCOOH 9 5 - - -
549. 233-272-6 10102-44-0 Nitrogen dioxide NO2 0.96 0.5 1.91 1  
550. 233-271-0 10102-43-9 Nitrogen monoxide NO 2.5 2 - -  
551.     Nitrogen oxides, (after NO2)   5        
552. 231-714-2 7697-37-2 Nitric acid HNO3 2 0.78 2.6 1  
553.     Fiber glass in the basis of which there is polyester resin   5        
554.   100-42-5 Styrene

(vinylbenzene)

C6H5CH=CH2 10   30   Auditory effect
555.   57-92-1 Streptomycin

(agrimycin,

phytomycin)

C21H39N7O12 0.1        
556. 231-131-3 7440-22-4 Silver metal Ag 0.1 - - - -
557.     Silver soluble compounds After Ag 0.01 -      
558.   57-68-1 Sulfadimidine

(sulphamethazine,

sulfodimesin,

4-amino-N-(4,6-dimethylpyrimidin-2-yl)-benzenesulfonamide)

  1        
559.   57-67-0 Sulfaguanidine

(sulfanilylguanidine,

sulgin,

4-amino-N-(aminoiminomethyl)-benzenesulfonamide)

  1        
560.   547-44-4 Sulfacarbamide H2N-C6H4-SO2NHC(O)NH2 1        
561.   152-47-6 Sulfalene

(4-Amino-N-(3-methoxypyrazin- 2-yl)-benzenesulfonamide)

  0.1        
562.   651-06-9 Sulfametoxydiazine

(5-methoxysulfadiazine,

4-amino-N-(5-methoxy-2-pyrimidinyl)-benzenesulfonamide)

  0.1        
563.   80-35-3 Sulphamethoxypyridazine

(sulphanilic acid 6-methoxy-3-pyridazinyl amide,

4-amino-N-(6-methoxy-pyridazin-3-yl)-benzenesulfonamide)

  0.1        
564.   63-74-1 Sulfanilamide

(streptocide,

4-aminobenzenesulfonamide)

1        
565.   72-14-0 Sulfathiazol

(4-amino-N-(thiazol-2-yl)-benzenesulfonamide,

sulphanilic acid thiazol-2-ylamide,

norsulfazole)

  1        
566. 222-995-2 3689-24-5 Sulfotep

(tetraethyldithiopyrophosphate,

1,2-dithiodiphosphoric acid, tetraethyl ester)

C8H20O5P2S2 0.1 - - - Skin
567.   107-92-6 Butyric acid

(butanoic acid)

CH3(CH2)2COOH 10        
568.   123-72-8 Butyraldehyde

(butyraldehyde,

butanal)

CH3(CH2)2CHO 5        
569.   57218-73-2 Lead hydrocyanate   0.005        
570.   15748-73-9 Lead disalicylate

(2-hydroxybenzoato-lead salt)

(HOC6H4COO)2Pb 0.005        
571.   7439-92-1 Lead and its inorganic compounds, (after lead) Pb 0.05   0.1   Auditory effect
572.     Chamotte-graphite fireproof material   2        
573.   1401-55-4 Tannin C76H52O46 1        
574.   13494-80-9 Tellurium Te 0.01        
575.   83-67-0 Theobromine

(3,7-dimethylxanthine,

3,7-dihydro-3,7-dimethyl-1H-purine-2,6-dione)

  1        
576.   58-55-9 Theophylline

(1,3-dimethylxanthine,

3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione)

  0.5        
577.   540-88-5 Tert-butyl acetate

(sec-butylacetat,

isobutyl acetate)

CH3COOCH2CH2CH2CH3 200        
577.1   1634-04-4 Methyl tert-butyl ether C5H12O 183.5 50 367 100  
578.   9005-90-7 Essence of turpentine C10H16 300        
579.   60-54-8 Tetracycline C22H24N2O8 0.1        
579.1 201-083-8 78-10-4 Tetraethyl orthosilicate (ethyl silicate; tetraethoxysilane) (C2H5O)4Si 44 5      
580.   78-00-2 Tetraethyl lead (C2H5)4Pb 0.005        
581.   127-21-9 1,1,3,3-Tetrafluoro-1,3-dichloropropan-2-on

(tetrafluoro-1,3-dichloroacetone)

ClF2CCOCF2Cl 2        
582.   76-37-9 2,2,3,3-Tetrafluoropropan-1-ol CHF2-CF2-CH2OH 20        
583. 203-726-8 109-99-9 Tetrahydrofuran 150 50 300 100 Skin
584.   79-34-5 1,1,2,2-tetrachloroethane CHCl2CHCl2 5        
585.   25322-20-7 Tetrachloroethane (mixed isomers) C2H2Cl4 5        
586. 204-825-9 127-18-4 Tetrachloroethylene (perfluoroethylene) C2Cl4 70 10 140 20 Skin
587. 200-262-8 56-23-5 Carbon tetrachloride (carbon tetracloride, tetrachlormethane) CCl4 6.4 1 32 5 Skin
588.   1401-69-0 Tylosin   1        
589.   68-11-01 Thioglycolic acid HSCH2COOH 0.1        
590.   62-56-6 Thiourea NH2CSNH2 0.3        
591.   12039-13-3 Titanium disulphide TiS2 6        
592.   25583-20-4 Titanium nitride TiN 4        
593.   12039-83-7 Titanium disilicide TiSi2 4        
594.   7440-32-6 Titanium Ti 10        
595.   13463-67-7 Titanium dioxide TiO2 10        
596.   95-53-4 o-toluidine CH3C6H4NH2 0.5   1    
597.   108-44-1 m-toluidine CH3C6H4NH2 0.5   1    
598.   106-49-0 p-toluidine CH3C6H4NH2 0.5   1    
599.   584-84-9 2,4-toluene diisocyanate

(methyl-m-phenylene diisocyanate,

toluene-2,4-diisocyanate,

m-tolylidene diisocyanate)

C9H6N2O2 0.05        
600. 203-625-9 108-88-3 Toluene

(methylbenzol)

CH3C6H5 50 14 150 40 Skin;

Auditory effect

601.   49721-45-1 4,5,6-Triaminopyrimidine sulphate

(pyrimidine-4,5,6-triamino sulphate)

  2        
602.   559-11-5 2,2,3,3,4,4,5,5,6,6,7,7,7-Tridecafluoroheptyl acrylate

(acrylic acid 1H, 1H- tridecafluoroheptyl ester,

2-propenoic acid 2,2,3,3,4,4,5,5,6,6,7,7,7-tridecafluoroheptyl ester)

H2C=CHCOOCH2(CF2)5CF3 30        
603. 204-469-4 121-44-8 Triethylamine (C2H5)3N 8.4 2 12.6 3 -
604. 204-428-0 120-82-1 1,2,4-trichlorobenzene 15, 1 2 37, 8 5 Skin
605. 200-756-3 71-55-6 1,1,1-trichloroethane (methyl chloroform) CH3CCl3 555 100 1110 200  
606.   461-18-7 4,4,4-Trifluoro-1-butanol CF3(CH2)3OH 20        
607.   507-52-8 1,1,1-trifluoro-2-methyl-propan-2-ol (CH3)2C(OH)CF3 20        
608.   75-89-8 2,2,2-trifluoroethanol CF3CH2OH 10        
609.   420-46-2 1,1,1-trifluoroethane

(Freon 143)

CH3CF3 3000        
610.   76-05-1 1,1,1-trifluoroacetic acid CF3COOH 2        
611.   25854-04-0 1,1,2-trichloro-1,3-butadiene Cl2C=CCl-CH=CH2 3        
612.   75-87-6 Trichloroacetaldehyde

(chloral)

CCl3CHO 5        
613.   76-03-9 Trichloroacetic acid CCl3COOH 5        
614.   76-02-8 Trichloroacetic acid chloroanhydride CCl3COCl 0.1        
615.   79-01-6 Trichloroethylene

(trichloroethene)

ClCH=CCl2 10       Auditory effect
616.   5329-12-4 2,4,6-trichlorophenylhydrazine   1        
617.   96-18-4 1,2,3-trichloropropane ClH2C-CHCl-CH2Cl 2        
618.   3278-46-4 2,2,3-trichloropropanoic acid

(chloropon)

ClCH2CCl2COOH 10        
619.   96-19-5 1,2, 3-Trichloropropene ClHC=CCl-CH2Cl 3        
620.   10025-78-2 Trichlorsilan, after HCl SiHCl3 1        
621.   2077-46-5 2,3,6- trichlorotoluene   10        
622. 208-394-8 526-73-8 1,2,3-trimethylbenzene 100 20 - - -
623. 202-436-9 95-63-6 1,2,4-trimethylbenzene

(pseudocumol)

100 20 - - -
624.   118-96-7 2,4,6-trinitrotoluene

(TNT)

  0.1   0.5    
625.   7440-61-1 Uranium, insoluble compounds U 0.075        
626.   7440-61-1 Uranium, soluble compounds U 0.015        
627.   57-13-6 Urea NH2CONH2 10        
628.     Urosulfane

(sulfanilcarbamide)

H2N-C6H4-SO2NHC(O)NH2 1        
629.   1314-34-7 Vanadium trioxide dust (disintegration aerosol)

(divanadium trioxide dust (disintegration aerosol)

V2O3 0.5        
630.   1314-62-1 Vanadium pentaoxide smoke (condensation aerosol)

(divanadium pentaoxide smoke (condensation aerosol)

V2O5 0.1        
631.   7440-62-2 Vanadium and its compounds

(ferro-vanadium (after vanadium))

V 1        
632.     Slag dust containing vanadium   4        
633.   12019-57-7 Copper phosphide

(tricopper phosphide)

Cu3P 0.5        
634.   147-14-8 Copper-phthalocyanine   5        
635.   17836-27-0 Copper chromium phosphate, after CrO3   0.02        
636.   20936-31-6 Copper salicylate

(salycilic acid copper salt)

Cu(C7H5O3)2 . 4H2O 0.1        
637.   7758-89-6 Copper salt after copper (chloric acid, ch. acid, sulphuric acid etc.) (Cu) 0.5        
638.   25267-55-4 Copper trichlorophenolate Cu(C6H2OCl3)2 0.1        
639.   7440-50-8 Copper Cu 0.5   1    
640.   88-12-0 1`-Vinyl-2-pyrrolidone

(N-Vinylpyrrolidone)

  1        
641.   108-05-4 Vinyl acetate (acetic acid, vinyl ester) CH3COOCH=CH2 17.6 5 35.2 10  
642.   689-97-4 Vinyl acetylene

(1-butene-3-yne)

HCCCHCH2 20        
643.     vinyl-phosphonicacid dichloro ethyl ester CH2=CHP(O)(OCH2CH2Cl)2 0.6        
644. 200-831-0 75-01-4 Vinyl chloride monomer

(chloroethylene)

CH2=CHCl 7.77 3 - - -
645.     Polymers of vinyl chloride and vinylidene chloride   10        
645.1 200-864-0 75-35-4 Vinylidene chloride (1,1-dichloroethylene) C2H2Cl2 8 2 20 5  
646.   100-69-6 2-vinylpyridine   0.5        
647.   12070-12-1 Tungsten carbide WC 6        
648.   12039-88-2 Tungsten disilicide WSi2 6        
649.     Tungsten-cobalt alloy with diamond admixture up to 5%   4        
650.     Vulcanisation gases which arise in tyre manufacturing and in the production of other rubber articles   0.5        
651.   81-81-2 Zoocoumarin

(warfarin,

3-(α-acetonylbenzyl)-4-hydroxycoumarin,

(R)-4-hydroxy-3-(3-oxo-1-phenyl-butyl)-2-benzopyrone,

(S)-4-hydroxy-3-(3-oxo-1-phenyl-butyl)-2-benzopyrone)

  0.001        

Notes:

1 - EINECS - the substance number in the European Inventory of Existing Chemical substances;

2 - CAS - Chemical Abstract Service Number - the registration number of the substance in the reference publication Chemical Abstract;

3 - When selecting an appropriate exposure monitoring method, account should be taken of potential limitations and interferences that may arise in the presence of other sulphur compounds.

4 - Short-term exposure limit regarding the base time period of one minute.

5 - Inhalable fraction.

6 - Fraction which may enter into the respiratory tract.

Acting for the Minister for Welfare,
Minister for the Environment R. Vējonis

 

In Revised Version Submitted by the Ministry of Welfare
Annex 2
Cabinet Regulation No. 325

15 May 2007

Synonyms of Chemical Substances and Numbers Corresponding to Substances

[1 February 2011; 7 April 2015; 10 July 2018]

No. of the synonym of the substance Synonyms of chemical substances No. of the substance in Annex 1
1. abrasive dust 543
2. 3- acetylanisole 443
3. 3- acetylmethoxybenzene 443
4. 2- acetoxybenzoic acid 3
5. 3-(α- acetonylbenzyl)-4- hydroxycoumarin 651
6. adipic acid dibutyl ester 165
7. adobacillin 69
8. agrimycin 555
9. acrylaldehyde 17
10. acryloilchloride 16
11. acrylic acid 1H, 1H- tridecafluoroheptyl ester 602
12. acrylic acid 2-ethoxyethyl ester 248
13. acrylic acid ethyl ester 233
14. acrylic acid, heptyl ester 305
15. acrylic acid methyl ester 419
16. acrofol 459
17. alkanes 495
18. alkyl amines 31
19. aluminium oxide with silicon dioxide admixture 369
20. amidopyrin 252
21. 1- amino-propane-1,3-dicarboxylic acid 47
22. 4- amino-1-methoxybenzene 73
23. 2- amino-3-(4-imidazolyl) propanoic acid) 48
24. 2- amino-3-(2-amino-2-carboxyethyldisulfanyl)propanoic acid) 44
25. 2- amino-3-(3-imidazolyl) propanoic acid) 58
26. 2- amino-3-(4-hydroxyphenyl) propanoic acid 56
27. 4- amino-3, 5, 6- trichloropyridine-2-carboxylic acid 32
28. 2- amino-3-phenyl-propanoic acid 45
29. 2- amino-3-guanidinovaleric acid 41
30. 2- amino-3-hydroxy-butanoic acid 57
31. 2- amino-3-hydroxypropanoic acid 55
32. 2- amino -3-mercaptopropionic acid 43
33. 2- amino-3-methyl-butanoic acid 59
34. 2- amino-3-methyl-pentanoic acid 49
35. 2 - amino-4-methylmercaptobutyric acid 52
36. 2- amino-4-methyl-pentanoic acid 50
37. aminobenzylpenicillin 69
38. aminobenzene 72
39. 4- aminobenzenesulfonamide 564
40. α - amino- β -phenylpropionic acid 45
41. α - amino- β -mercaptopropionic acid 43
42. α - amino- β -.-methylvaleric acid 49
43. 2- aminosuccinic acid 42
44. 2- aminobenzoate 108
45. aminoacetic acid 46
46. aminophenylmethyl-penicillin 69
47. α - amino-g-methylthiobutyric acid 52
48. α - aminoisocaproic acid 50
49. ε- aminocaproic acid lactam 366
50. 4- Amino-N-(3-methoxypyrazin-2-yl)-benzenesulfonamide) 565
51. 4- amino-N-(4,6-dimethylpyrimidin- 2-yl)- benzenesulfonamide 558
52. 4- amino-N-(5-methoxy-2-pyrimidinyl) benzenesulfonamide 562
53. 4- amino-N-(5-ethyl-[1,3,4]thiadiazol-2-yl)-benzenesulfonamide 229
54. 4- amino-N-(6-methoxy-pyridazin-3-yl)-benzenesulfonamide 563
55. 4- amino-N-(aminoiminomethyl)-benzenesulfonamide 559
56. 4- Amino-N-(thiazol-2-yl)-benzenesulfonamide 565
57. 2- aminopropanoic acid 40
58. 3- aminopropanoic acid 18
59. α- aminopropionic acid 40
60. ammonium hydrofluoride 270
61. ammonium hydrogen phosphate and dihydrogen phosphate mixture 60
62. ammonium thiocyanate 64
63. antihelmycin 310
63.1 p-anisidine 73
64. apatite 543
65. aziridine 241
66. barium hydrogen phosphate 86
67. barite 89
68. benzal chloride 98
69. benzyl cyanide 253
70. benzo[def]chrysene 94
71. p- benzoquinone 102
72. 1.3- benzenedicarboxylic acid 337
73. 1.2- benzenedicarboxylic acid anhydride 281
74. 1.2- benzenedicarboxylic acid, di-2-propenyl ester 161
75. 1.2- benzenedicarboxylic acid, dialkyl esters 162
76. 1.2- benzenedicarboxylic acid, dibutyl ester 167
77. 1.2- benzenedicarboxylic acid, diethyl ester 173
78. 1.2- benzenedicarboxylic acid, dimethyl ester 202
79. 1.4- benzenedicarboxylic acid, dimethyl ester 206
80. 1.2- benzenedicarboxylic acid, dinonyl ester 215
81. 1.2- benzenedicarboxylic acid, diisobutylester 191
82. 1.3- benzene-1,3-diol 525
83.   benzoic acid chloroanhydride 103
84. 2,2'- bipyridine and 4,4'-bipyridine 113
85. bis(2-ethylhexyl) sebacate 217
86. bis-azepan-1-ylmethanone 221
87. bisphenol A 341
88. bis-N,N'-hexamethylene urea 221
89. bauxite agglomerate 543
90. boron trifluoride 117
91. DL- Bornan-2-one 365
92. 1- Bromo-3-nitrobenzene 486
93. 1- bromobutane 131
94.   bromoethane 236
95.   bromomethane 420
96.   butyraldehyde 568
97.   butanal 568
98. 1.4- butanedicarboxylic acid 7
99. 1.4- butane dicarbonic acid dibutyl ester 165
100. 1.4- butanedicarboxylic acid monoethylester 8
101. 1- butanol 137
102. 2- butanol 137
103. n- butanol 137
104. butanoic acid 567
104.1 butanedione 160.1
105. 3- butene-2-one 438
106. 1- butene-3-yne 642
107.   butyl cellosolve 139
108.   butyl glycol acetate 140
109.   butyl diglycol 141
109.1   1,4-butynediol 127.1
110.   cephalosporin N 142
111.   cephalosporin P 142
112.   cement 543
113.   cyanobenzene 106
114. 2- cyanoethanol 309
115.   cyanoethylene 11
116.   cyanomethane 1
117.   hardwood 523
118. p- cymol 154
119. zineb 155
120. cis-3-Chloroacrylic acid sodium salt 459
121. cis-3-Chloropropenoic acid, sodium salt 459
122. DBP 167
123. p,p'- DDT (4,4'-DDT) 370
124.   decanedioic acid dibutyl ester 169
125.   decanedioic acid dimethyl ester 203
126. 1- decanol 160
127.   demeton 407
128.   desflurane 71
129.   dialkyloxalates 547
130. 1.2- diaminoethane 238
131. 1.6- diaminohexane 298
132. 2,6- diaminohexanoic acid 51
133. α, ε - diaminocaproic acid 51
134. diammonium hydrogen orthophosphate 60
135. diboron trizinc hexaoxide 157
136. dibromomethane 427
137. diethyl 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate 193
138. diethylenediamine 504
139. diethyl ((phenylthio)methyl)phosphonate) 307
140. O,O'- diethyl-O''-(2-ethylthioethyl) thiophosphate and O,O'-diethyl-S-(2-ethylthioethyl) thiophosphate mixture 407
141.   diphacinone 174
142. 2- diphenylacetyl-1,3-Indandion 174
143.   diphenyl 112
144.   difluorochlorobromomethane 121
145.   diphosphorus pentasulphide 276
146.   diphosphorus pentaoxide 274
147. 3.7- dihydro-1,3-dimethyl-1H-purine-2,6-dione 575
148. 3.7- dihydro-3,7-dimethyl-1H-purine-2,6-dione 576
149. 1,3- dihydroxybenzene 525
150. 2,2' dihydroxydiethyl ether 171
151. m- dichlorobenzol 183
152. o- dichlorobenzol 182
153. p- dichlorobenzol 184
154.   dichloro-diphenyl-trichloroethane (DDT) 370
154.1   1,1-dichloroethylene 645
155. 1.2- dichloro-1-fluoro-ethane 267
156.   dichloromethane 428
157.   dichloromethylbenzene 98
158. α, α - dichlorotoluene 98
159.   dichromates 334
160.   diludine 193
161. N,N- dimethyl-2-hydroxyethylamine 195
162. 2.2- Dimethyl-3-(2-methyl-1-propenyl) cyclopropane-1-carboxylic acid) 382
163. 2.6- dimethyl-3,5-diethoxycarbonyl-1,4-dihydropyridine 193
164. 2.3- dimethylacrylic acid 415
165. 3.3- dimethylacrylic acid ethyl ester 416
166. α, α - dimethylbenzylhydroperoxide 251
167. 1.2- dimethylbenzene 386
168. 1.3- dimethylbenzene 385
169. 1.4- dimethylbenzene 387
170.   dimethylbenzene 384
170.1   dimethyl diketone 160.1
171. N,N- dimethylethanolamine 195
172. N,N- dimethylphenylamine 196
173. 1.3- dimethylxanthine 576
174. 3.7- dimethylxanthine 575
175. O,O'- dimethyl-O''-(2-ethylthioethyl) thiophosphate and dimethyl-S-(2-ethylthioethyl) thiophosphate mixture 433
176. 2.2- dimethylvinylcarbinol 414
177. 2.4- dinitrochlorobenzene 314
178. 4.6- dinitro-o-cresol 426
179. 2,2'- dipyridyl and 4,4'-dipyridyl 113
180. dipropylene glycol monomethyl ether 441
181. disulphur dichloride 532
182. [10 July 2018]
183. 3,3'- dithiobis-2-aminopropanoic acid 44
184. 1.2- dithiodiphosphoric acid, tetraethyl ester 566
185. divanadium pentaoxide smoke 630
186. divanadium trioxide dust 629
187. DNOC 426
188. dodecan-1-ol 220
189. dolomite 543
190. DPM 441
191. yellow prussiate of potash 358
192. iron agglomerate 223
193. baking soda 461
194. electro-corundum 22
195. enflurane 71
196. 1.2- epoxypropane 518
197. 2- propenoic acid 2-ethoxyethyl ester 248
198.   ethanal 2
199. N,N'- ethanediylbis-dithiocarbamic acid zinc salt 155
200. 1.2- ethanediol 239
201. ethanedioic acid 546
202. ethanol 246
203. acetic acid 3-methylbutyl ester 335
204. acetic acid, benzyl ester 96
205. acetic acid, methyl ester 418
206. acetic acid, propyl ester 513
207. acetic acid, vinyl ester 641
208. ethyl -[[3-[2-(diethylamino)ethyl]-4-methyl-2-oxo-2H-1-benzopyran-7-yl]oxy]acetate hydrochloride 368
209. crotonic acid, 3-methyl-, ethyl ester 416
210. ethyl acetate 232
211. ethylbutylcetone 304
212. 1.2- ethylendicarbonic acid anhydride 400
213.   ethylene glycol dimethyl ether 207
214.   ethyleneglycol monobutyl ether acetate 140
215.   ethyleneglycol monobutyl ether 139
216.   ethylene glycol monoethyl ether 237
216.1   2-ethyl-1-hexanol 243.1
217. 2- ethylhexyl acrylate 14
217.1   2-ethylhexyl alcohol 243.1
218.   ethylsoamykeltone 423
219.   ethyl mercaptan 228
220.   ethylmethylketone 126
221. O- ethyl O-phenyl S-propyl phosphorothioate 307
221.1 ethyl silicate 579.1
222. 2- ethoxyethanol 237
223.   phenibute 33
224. [(2- phenyl-1,5-dimethyl-3-oxo-2.3-dihydro-1H-pyrazol-4-yl)-methyl-amino] methan
esulfonate
70
225. 6- phenylacetamido penicillinic acid sodium salt 99
226.   phenylamine 72
227. 2- phenylazomalononitrile 254
228. N,N'-(m- phenylene) disuccinimide 258
229. 1,1-(1,3- phenylene)bis(1H-pyrrole-2,5-dione) 258
230. 1.2- phenylenediamine 256
231. 1.3- phenylenediamine 255
232. 1.4- phenylenediamine 257
232.1 Phenylene ether 175.1
233. phenylhydrazonomalononitrile 254
234. phenylcarbinol 100
235. phenylmethanol 100
236. phenyl methyl ketone 4
237. 2- phenylpropene 436
238.   phenmedipham 111
238.1   Phenoxybenzene 175.1
239. 3- phenoxyphenol 262
240.   ferro-vanadium 631
241.   phytomycin 555
242.   phlogopite 543
243.   formaldehyde dimethylacetal 208
244. 2- formylfuran 288
245. phosphorus pentachloride 273
246. phosphorus pentaoxide 274
247. phosphoryl trichloride 275
248. phosphoric acid, dibutyl phenyl ester 166
249. freon 11 268
250. freon 12 177
251. freon 12 Br 121
252. freon 13 B1 124
253. freon 141 267
254. freon 142 179
255. freon 143 609
256. freon 152 178
257. freon -112 176
258. 2- furancarboxaldehyde 288
259.   germanium (IV) oxide 292
260.   germane 293
261.   glutamic acid 5-lactam 53
262.   glutaric acid dialdehyde 294
263.   grain dust 523
263.1   gypsum dust 353.1
264.   halotan 71
265.   hexachloropropanone 295
266. 1.6- hexanediamine 298
267. 1.6- hexamethylene diisocyanate 299
268. hexanedioic acid dibutyl ester 165
269. hexanoic acid 367
270. heptanol 306
271. herban 289
271.1 hydrogenated diphenylbenzenes 308.1
272. 2- hydroxy-2-methylpropionitrile 5
273. (R)-4- hydroxy-3-(3-oxo-1-phenyl-butyl))-2-benzopyrone 651
274. (S)-4- hydroxy-3-(3-oxo-1-phenyl-butyl))-2-benzopyrone 651
275. 7-[2- hydroxy-3-(N-(2-hydroxyethyl), -N-methylamino] propyl) theophylline nicotinate 383
276.   hydroxybenzene 264
277. 2- hydroxybenzoato-lead salt 570
278. 2- hydroxyethyl acrylate 15
279. 3-(4- hydroxyphenyl)alanine 56
280. α- hydroxyisobutyronitrile 5
281. 2- hydroxymethylfuran 287
282. 1- hydroxynaphthalene 456
283. 2- hydroxynaphthalene 457
284. 3- chloro-1,2-epoxypropane 226
285. 1- chloro-3-hydroxypropane 312
286. chloroacetyl chloride 447
287. chloral 612
288. picloram 32
289. 1- chlorobutane 133
290.   chloroethane 244
291.   chloroacetic acid 446
292.   chloroethylene 644
293.   chloromethane 429
294.   chloropon 618
295.   chloropelargonic acid 319
296. α - chloropropionic acid 322
297. α - chlorotoluene 97
298. homopiperidine 300
299. chromium orthophosphate 328
300. chromium trioxide 329
301. chromium-ammonium alum 333
302. intencordin 368
303. Iintensain 368
304. slag and mineral wool 543
305. isoamyl methyl ketone 422
306. isobutyl acetate 577
307. isobutyl acetone 422
308. isobutyl methyl ketone 424
309. iso-butyl alcohol 137
310. isoflurane 71
311. [7 April 2015]
312. isopentyl acetate 335
313. isopentyl methyl ketone 422
314. isopropylbenzene 250
315. isopropyl acetate 424
316. isopropylbenzene hydroperoxide 251
317. isopropylbenzene 388
318. isopropyl alcohol 340
319. 2- isopropyltoluene 154
320. 3- isopropyltoluene 154
321. 4- isopropyltoluene 154
322.   calcium dihydroxide 348
323.   dipotassium hexafluorosilicate 357
324.   potassium O- alkyldithiocarbonate 354
325.   Carbonic acid, dithio-, O-butyl ester 355
326.   Potassium O-ethyl dithiocarbonate 356
327.   carbamonitrile 148
328.   carbathione 466
329.   carbinol 413
330.   carboxide (pesticide) 221
331. 1- carboxymethyl pyridinium betaine 111
332. carbonyl dichloride 280
333. caustic soda 462
334. pottery 543
335. cresol mixture 381
336. trisodium hexafluoroaluminate 270
337. 2.6- xylenol 200
338. o-,m-,p- xylene 384
339. cumyl hydroperoxide 251
340. cumene hydroperoxide 251
341. cumolhydroperoxide 198
342. cuprozan 155
343. white spirit 393
344. lauryl alcohol 220
345. luminophores P - 385 84
346. magnesium dodecaboride 398
347. maleinanhydride 400
348. clay 543
349. maneb 404
350. methacrylic anhydride 410
351. methacrylic chloride 411
352. methanal 271
353. methanoic acid 548
354. 2- metyl-1,3-butadiene 339
355. 3- metyl-1-butanol 336
356. 1- methyl-1-ethanol 340
357. 2- Methyl-propan-1-ol 137
358. 3- methyl-2-butanol 431
359.   methyl 2-methylpropenoate 434
360. N- Methyl2-pyrrolidone 425
361. 2- Methyl-propan-2-ol 137
362.   methyl-amyl-ketone 303
363.   methylal 208
364.   methylbenzol 600
365. 3- methyl-1-butyl acetate 335
366. 1- methylbutyl ethanoate 421
366.1 demeton-methyl 433
367. methyldithiocarbamate 466
368. methyldithiocarbamic acid, sodium salt 466
369. methylethylketone 126
370. o-, m-, p- methylphenols 381
371.   methyl chloroform 605
372.   methylisobutylketone 424
373. 2- Crotonic acid, 2-methyl- 415
374.   methyl mercaptan 412
375. 4- methyl-m-phenylene diisocyanate 599
376.   methyloxirane 518
377.   methyl pentyl ketone 303
378. 4- methylpiperazine-1amine 34
379. 3-(1- Methyl-2-pyrrolidinyl) pyridine 474
380. methyl propenoate 419
381. 2- methylpropionic acid 409
382. 2- methylpropenoic acid anhydride 410
383. 2- methylpropionic acid amide 408
384. 2- propenoic acid, 2-methyl-, butyl ester 135
385. 2- methylpropenoic acid chloroanhydride 411
386. 2- methyl-2-propenoic acid methyl este 433
387.   methyl alcohol 413
388. α- methylstyrene 250
389. N- Methylurea 437
390. 1- methoxy-4-nitrobenzene 484
391. 4- methoxyaniline 73
392. 5- methoxysulfadiazine 562
393.   monoethanolamine 35
394. monochlorbenzene 317
395. monopropylene glycol methyl ether 442
396. muscovite 543
397. petroleum 393
398. 2- naphthenic acid 453
399. α - naphthol 456
400. β naphthol 457
401. sodium 3-chloroacrylate 459
402. soda lye 462
403. sodium thiocyanate 470
404. n-butyl acetate 231
405. inorganic chromium (II) compounds 327
406. inorganic chromium (III) compounds 327
407. nicotinamide 476
408. N-(5- Nitro-2-furfurylidene)-1-aminohydantoin 284
409. m- nitroaniline 482
410. o- nitroaniline 481
411. p- nitroaniline 483
412.   nitrofural 282
413.   nitrofurantoin 283
414. 3-(5- nitrofurfurylidenamino)-2-oxazolidinone 286
415. 5- nitrofuranyl semicarbazone 282
416. N-[2-(5'- nitrofuryl-2)-2-propenylidine]-1-amino-hydantoin 284
417. N-[(5'- nitro-2'-furyl)acrylidene]-1-aminohydantoin 284
417.1 nitroglycerin 293.1
418. nivalin 289
419. nonanol 491
420. norsulfazole 565
421. nururon 289
422. carbon disulphide 533
423. carbon monoxide 493
424. carbon tetrafluoride 587
425. 2,2' oxybisethanol 171
426.   oxirane 242
427. 2,2,3,3,4,4,5,5 octafluoropenthyl acrylate 13
428.   octan-1,8-dicarboxilic acid dioctyl ester 217
429. 1.8- octane dicarboxylic acid 528
430. 1.8- octane-1,8-dicarboxylic acid dimethyl ester 203
431.   octanol 497
432.   orthoboric acid barium salt 83
433.   orthophosphoric acid 278
434.   pemza 543
435.   3-Penten-3-ol 414
436.   pentacarbonyliron 222
437. 1.5- pentanedial 294
438. 1- pentanol 30
439.   pentanoic acid 79
440. 3- pentyl acetate 26
441. pentyl acetate 25
442. pentyl bromide 28
443. 3- pentyl ethanoate 26
444.   pentyl ethanoate 25
445.   pentyl formate 29
446.   perhydroazepine 300
447.   perchloroethylene 586
448.   perlite 543
449.   petroleum ether 392
450.   polyethylene 510
451.   piramidon 252
452.   pyrethrum 506
453. 1- pyridylacetic acid betaine 111
454. pyridine-3-carboxylic acid 475
455. pyridine-3-carboxylic acid amide 476
456. pyrimidine-4,5,6-triamino sulphate 601
457. pyrrolidone-5-carboxylic acid 53
458. 2- pyrrolidone carboxylic acid 54
459. polyamide 510
460. polyethylene terephtalate 389
461. polyformaldehyde 510
462. polycaprolactam 510
463. polypropylene 510
464. polysaccharide 390
465. polyurethane 510
466. Portland cement 144
467. propanal 522
468. 1.2- Propanediol cyclic carbonate 515
469. 1.2- propanediol 517
470. 1- propanol 521
471. 2- propanol 342
472. 2- propanone 6
473. 2- propanol, dimethyl ketone 6
474.   propionic acid propyl ester 520
475. 2- propene-1-ol 19
476. 2- prop-2-enal 17
477. propenoyl chloride 16
478. propene 519
479. propenoic acid 12
480. 2- propenoic acid 2,2,3,3,4,4,5,5,6,6,7,7,7-tridecafluoroheptyl ester 602
481. 2- propenoic acid 2,2,3,3,4,4,5,5-octafluoropenthyl ester 13
482. 2- propenoic acid 2-ethylhexyl ester 14
483.   propenoic acid 2-hydroxyethyl ester 240
484.   propenoic acid amide 10
485. 2- propenoic acid ethyl ester 233
486.   propenoic acid, heptyl ester 305
487.   propenoic acid, methyl ester 419
488. n- propylamine 514
489.   propylbenzene 388
490.   propylene glycol monomethyl ether acetate 441
491.   propylene glycol monomethyl ether 442
492.   propylene chlorohydrin 315
493. 2- propyn-1-ol 511
494. propionic acid 512
495. pseudocumol 623
496. dust of plant and animal origin 523
497. dust, sugar 523
498. dust, wood 523
499. cotton, linen, wool, piles, and peat dust 523
500. dust, flour 523
500.1 carbon, coal, diamond dust 494
501. dust, paper 523
501.1 polymeric materials (polyethylene, polypropylene etc.) dust 510
501.2 silicate and aluminosilicate dust 543
502. dust, tobacco 523
503. dust of talc type 523
504. tea dust 523
505. ratindan 174
506. rimactane 527
507. salycilic acid cupric salt 636
508. red prussiate of potash 359
509. sebacic acid dibutyl ester 169
510. sebacic acid, dimethyl ester 203
511. sebacic acid dioctyl ester 217
512. sec-butylacetat 577
513. sulphur dioxide 530
514. sulphur trioxide 531
515. sulphuric anhydride 531
516. sevoflurane 71
516.1 formic acid methyl ester 421.1
517. formic acid pentyl ester 29
518. glass fibre 543
519. glass wool 543
520. streptocide 564
521. sulfodimesin 558
522. sulfaethylthiadiazole 229
523. sulfaethidiole 229
524. sulphamethazine 558
525. sulfanilylguanidine 559
526. sulphanilic acid 6-methoxy-3-pyridazinyl amide 563
527. sulphanilic acid thiazol-2-ylamide 565
528. sulfanilcarbamide 637
529. sulgin 559
530. talc 543
531. theophylline + 1,2 ethylenediamine 225
532. tert-butanol 137
533. tert-pentyl acetate 27
534. tert-Pentyl hydroperoxide 417
535. terylene 389
535.1 tetraethoxysilane 579.1
536. tetraboron silicide 541
537. tetraethyldithiopyrophosphate 566
538. tetrafluoro-1,3-dichloroacetone 581
539. tetrachlorodifluoroethane 176
540. tetracarbonyl nickel 479
541. tillam 245
542. TNT 624
543. m- tolylene diisocyanate 599
544.   toluene-2,3- diamine 163
545.   toluene-2,4-diisocyanate 599
546.   tordon-22k 32
547.   triacylglycerol 394
547.1   1,2,4-triazol-3-amine 30.1
548.   trizinc diphosphide 156
549.   trifluorobromomethane 124
550. 1,1,1- bis-(4-chlorophenyl)-2,2,2,-trichloroethane 370
551.   trichloroethene 615
552.   trichloromethane 320
553.   tricarbonyl (methylcyclopentadienyl) manganese 403
554.   trimellitic acid 105
555. 1,3,5- trimethylbenzene 445
556. 1,7,7- trimethylbicyclo(2,2,1)heptan-2-one 365
557. trimethylene chlorohydrin 312
558. 1,3,7- trimetylxanthine 375
559. 2,4,6- trinitrophenol 503
560.   trisilicon tetranitride 540
561.   tricopper phosphide 633
562.   tuff 543
562.1   carbon monoxide gas 493
563.   white spirit 393
564.   warfarin 651
565.   vinylbenzene 554
566.   vinylbenzene 435
567. N- vinylpyrrolidone 640
568. vinyltoluene 435
569. vitamin B2 526
570. mica 543
571. hydrocyanic acid 149

Acting for the Minister for Welfare, Minister for the Environment R. Vējonis

 

In Revised Version Submitted by the Ministry of Welfare
Annex 3
Cabinet Regulation No. 325

15 May 2007

Biological Limit Values

1. The BLV of lead (Pb):

1.1. in blood is 40 µg Pb/100 ml (reference value - lead concentration in blood of population not subject to occupational exposure <10 µg/100 ml). A repeat blood test shall be carried out in two months if the lead level is 40-60 µg/100 ml. If the lead level is >60µg/100 ml, transfer to work where there is no contact with lead, health care and a repeat control of Pb level are required;

1.2. clinical blood picture, reticulocytes and punctate graininess of basophils in erythrocytes;

1.3. coproporphyrin in urine -100 µg/g of creatinine (reference value 22-57µg/g of creatinine);

1.4. aminolevulinic acid in urine - 5 mg/g of creatinine (reference value 0.5-2.5 mg/g of creatinine).

2. The BLV of mercury (Hg):

2.1. in blood is 15 µg Hg/l (reference value for the mercury concentration in blood of population not subject to occupational exposure < 1µg/l);

2.2. in urine is 35 µg Hg/g creatinine or 50 µg Hg/l (reference value for the mercury concentration in urine is < 5 µg Hg/g creatinine or 3.5 µg/l.

3. The BLV of cadmium (Cd):

3.1. in blood is 5 µg Cd/l (reference value for the cadmium concentration in blood of population not subject to occupational exposure (non-smokers) <1µg/l);

3.2. in urine is 5 µg Cd/g creatinine or 6 µg/l (reference value for the cadmium concentration in urine of population not subject to occupational exposure (non-smokers) < 0.5µg/l).

4. The BLV of chrome (Cr) in urine is 10µg Cr/g creatinine when changing during a shift (a reference value of the total chromium concentration in blood of population not subject to occupational exposure < 0.5µg/l, in urine - < 0.5µg/l).

5. Metabolites and/or the following chemical substances shall be determined to organic solvents (benzene, toluene, styrene):

5.1. to benzene - phenol shall be determined in urine at the end of the shift (BLV 25µg/g of creatinine);

5.2. to toluene - hippuric acid shall be determined in urine (BLV 1.6 g/g creatinine), in blood - toluene (BLV 0.05mg/g) at the end of the shift; and

5.3. to styrene - mandelic acid shall be determined in urine (BLV 0.8 g/g creatinine), in blood - styrene (BLV 0.55 mg/g) at the end of the shift.

6. The activity of cholinesterase in erythrocytes shall be determined to phosphorus organic compounds, BLM 70% of the base level.

Acting for the Minister for Welfare, Minister for the Environment R. Vējonis

 

In Revised Version Submitted by the Ministry of Welfare
Annex 4
Cabinet Regulation No. 325

15 May 2007

Determination of Concentration of a Chemical Substance in the Air of the Working Environment

1. Samples shall be taken in the more characteristic workplaces. Performing the same work operation with similar tools, the air of the working environment shall be controlled by the sampling principle of workplaces, choosing them both in the centre of the room and at the sides of the room.

2. The air for analysis shall be taken during the working process (in typical work conditions) in the zone of breathing of the employee - in the hemisphere of the part of the room within 0.3 m radius, which embraces the face of a human with a centre in the middle between the eyes and the centre of which is situated on the line which goes through the middle of the head and larynx.

3. During the shift or during a separate stage of the technological process at one workplace (point) at least three samples shall be taken for the assessment of exposure; in determining aerosols of fibrogenic effect, one sample is permissible.

4. Calibrated accurate instrumental analytical measuring equipment shall be used for sampling and analysis.

5. If the gas and vapour concentration (Cg) is expressed in measurement units independent from temperature and air pressure ppm, then taking into account the molar weight of the substance [vielas molmasa] and the capacity taken by the mol of the gaseous substance at the relevant temperature, the concentration of the mass of the gaseous chemical substance (C, mg/m3) shall be calculated in accordance with the following formulae:

C(mg / m3) = molar weight of the substance x Cg(ppm), at 20°C
24.04
C(mg / m3) = molar weight of the substance x Cg(ppm), at 25°C
24.44

6. Expressing the concentration of the mass of the gaseous chemical substance (C, mg/m3) as the gas and vapour concentration (Cg) in measurement units independent from temperature and air pressure ppm, the following recalculation formulae shall be used:

Cg(ppm) = 24.04 x C(mg / m3), at 20°C
molar weight of the substance

7. The concentration of the chemical substance for the shift shall be determined in the following way:

7.1. one or several consecutive air samples shall be taken during the eight hour working day or during a shift (the amount of air of the working environment, which is taken for analysis in order to measure the concentration of dangerous substances in the air sample taken), in which the necessary analyses are performed;

7.2. sampling shall be performed using individual air receivers (devices which receive air at the respiration area of the employee), during the shift or the average indicator is determined after the results of analysis taken separately during the shift;

7.3. in determining the average indicator by the results of analysis taken separately during the shift, it shall be calculated as the average for a time period, when the employee performs all the operations of the technological process; and

7.4. the calculations of the concentration shall be performed in accordance with the following formula:

, where:

Cmaiņā - indicates the average arithmetical concentration of the chemical substance during the shift, mg/m3;

Ci, C1,C2 …Cn- the concentration of the dangerous chemical substance in time periods of separate stages of the technological process (operations) , mg/m3 during the shift;

ti, t1 , t2, tn - the duration of separate stages (operations) of the technological process - the corresponding exposure time, expressed in hours

∑ti - the duration of the whole shift in hours, for example, 8 hours;

7.5. the assessment of the working environment shall cover at least 75% of the duration of a shift and it shall be performed during several work shifts.

8. Specification of the concentration of the chemical substance in the samples obtained during the performance of measurements shall be carried out in accordance with the method used in a certain case and the measurement instrument and the results obtained shall be compared with OEV.

9. In determining the concentration of dangerous chemical substances:

9.1. the methodology and measurement instruments for specification of chemical substances shall ensure specific substance specification even if other substances are present in the working environment at least at 0.1 OEV level (for specification of the approximate concentration 0.5 OEV level is permissible);

9.2. the total error of the concentration of the chemical substance may not exceed ± 25%; and

9.3. the result of the measurement of the chemical substance concentration shall be applied to circumstances where the air temperature is 20 0C (293 K) and ambient pressure 760 mm Hg (101,23 kPa).

10. Specification of the approximate concentration of chemical substances with indication tubes and other indicative measurement instruments shall be performed in accordance with the information provided by the manufacturer, including operating instructions, taking into account the presence of other substances in the air of the working environment at the same time and the possible effect thereof on the results of measurements;

11. Quick operation gas analysers shall be used for continuous automated control of dangerous substances of quick exposure in the working environment.

12. If the result below the detection limit of the method (the minimum concentration of the chemical substance, which may be detected using this method) is obtained during measurements, it shall be considered that the concentration of the chemical substance to be determined is a half of the concentration of such chemical substance, which is specified as a detection limit of a particular method.

Acting for the Minister for Welfare, Minister for the Environment R. Vējonis

 


Translation © 2019 Valsts valodas centrs (State Language Centre)

 
Document information
Status:
In force
in force
Issuer: Cabinet of Ministers Type: regulation Document number: 325Adoption: 15.05.2007.Entry into force: 19.05.2007.Publication: Latvijas Vēstnesis, 80, 18.05.2007.
Language:
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