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Use and Standards of Exposure of Chemicals Hazardous to Health Regulations 2000

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DOSH - P.U. (A) 131

Use and Standards of Exposure of Chemicals Hazardous to Health Regulations 2000 (USECHH): Sets exposure limits for workplace chemicals.

PART I - PRELIMINARY​

Regulation 1. Citation and commencement​

  • (1)
    These regulations may be cited as the Occupational Safety and Health (Use and Standards of Exposure of Chemicals Hazardous to Health) Regulations 2000.
  • (2)
    These Regulations shall come into operation on 4 April 2000.

Regulation 2. Interpretation​

  • In these Regulations, unless the context otherwise requires -
    “airborne concentration”
    in relation to a chemical means the quantity of a chemical measured in terms of its volume or its mass in a specified volume of air or the number of fibres, if the physical form of the chemical is fibrous, in specified volume of air which is carried by or through the air;
    “approved”
    means approved in writing by the Director General;
    “assessor”
    means an employee or any other person appointed by the employer and registered with the Director General to carry out assessments of risks to health;
    “ceiling limit”
    means the airborne concentration that should not be exceeded during any part of the working day;
    “chemicals”
    means chemical elements, or compounds or mixtures thereof, whether natural or synthetic, but does not include micro-organisms;
    “chemicals hazardous to health”
    means any chemical or preparation which -
    • (a)
      is listed in Schedule I or II ;
    • (b)
      possesses any of the properties categorised in Part B of Schedule I of the Occupational Safety and Health (Classification, Packaging and Labelling of Hazardous Chemicals) Regulations 1997 [P. U. (A) 143/97];
    • (c)
      comes within the definition of 'pesticide' under the Pesticides Act 1974 [Act 149] ; or
    • (d)
      is listed in the First Schedule of the Environmental Quality (Schedule Wastes) Regulations 1989 [P. U. (A) 139/89];
    “Chemical Safety Data Sheet”
    means a document which contains relevant information on a chemical and is furnished in pursuance of the Occupational Safety and Health(Classification, Packaging, and Labelling of Hazardous Chemicals) Regulations 1997 [P. U. (A) 143/97];
    “Director General”
    means the Director General of Occupational Safety and Health appointed under subsection 5(1) of the Act;
    “engineering control equipment”
    means any equipment which is used to control exposure of employees to chemicals hazardous to health and includes local exhaust ventilation equipment, water spray or any other airborne chemical removal and containment equipment;
    “health surveillance”
    means any examination and investigations which may be necessary to detect exposure levels and early biological effects and responses, and includes biological monitoring, biological effect monitoring, medical surveillance, enquiries about symptoms of occupational poisoning or occupational disease and review of records and occupational history;
    “hygiene technician”
    means an employee or any other person appointed by the employer and registered with the Director General to carry out any inspection, examination or test on engineering control equipment installed in a place of work or to carry out chemical exposure monitoring;
    “maximum exposure limit”
    means a fifteen-minute time-weighted average airborne concentration which is three times the eight-hour time-weighted average airborne concentration of the chemicals specified in Schedule I ;
    “medical surveillance”
    means the monitoring of a person for the purpose of identifying changes in health status due to occupational exposure to chemicals hazardous to health;
    “occupational health doctor”
    means a medical practitioner who is registered with the Director General to conduct medical surveillance programmes of employees;
    “permissible exposure limit”
    means a ceiling limit or an eight-hour time-weighted average airborne concentration or the maximum exposure limit;
    “personal protective equipment”
    means any equipment which is intended to be worn or held by a person at work and which protects him against one or more risks to his health or safety and any additional accessory designed to meet that objective;
    “supplier”
    means a person who supplies chemicals and include a formulator, a manufacturer, an importer or a distributor;
    “time-weighted average”
    in relation to airborne concentration, means an average airborne concentration over a specified period of time;
    “use”
    means production, processing, handling, storage, transport, disposal and treatment.

Regulation 3. Application​

  • (1)
    These Regulations shall apply to all places of work which are within the jurisdiction of the Act where chemicals hazardous to health are used except chemicals which are -
    • (a)
      defined as radioactive materials under the Atomic Energy Licensing Act 1984 [Act 304] ;
    • (b)
      foodstuffs;
    • (c)
      hazardous to health solely by virtue of their explosive or flammable properties, or solely because they are at a high or low temperature or a high pressure; and
    • (d)
      pharmaceutical products.
  • (2)
    For the purpose of this regulation, “pharmaceutical product” means a drug in a pharmaceutical dosage form for use by humans as medicine.

Regulation 4. Duty of employer and self-employed person​

  • (1)
    Where any duty is imposed by these Regulations on an employer in respect of his employees, he shall, so far as is practicable, be under a like duty in respect of any other person who may be affected by the work activity carried on by the employer, whether at work or not, except that the duties of the employer -
    • (a)
      under regulation 26 shall not extend to persons who are not his employees, unless those persons are on the premises and carrying out work for the employer; and
    • (b)
      under regulation 27 shall not extend to persons who are not his employees.
  • (2)
    These Regulations, except regulations 26 and 27 , shall apply to a self-employed person as they apply to an employer and an employee.

PART II - IDENTIFICATION OF CHEMICALS HAZARDOUS TO HEALTH​

Regulation 5. Register of chemicals hazardous to health​

  • (1)
    An employer shall identify and record in a register all chemicals hazardous to health used in the place of work.
  • (2)
    The register shall be maintained in good order and condition and be updated from time to time and shall contain the following information:
    • (a)
      a list of all chemicals hazardous to health used;
    • (b)
      the current Chemical Safety Data Sheet for each of the chemicals hazardous to health except for pesticides which shall have information as specified in Schedule III ;
    • (c)
      the average quantity used, produced or stored per month or per year whichever is applicable for each of the chemicals hazardous to health;
    • (d)
      the process and work area where the chemicals hazardous to health are used; and
    • (e)
      the name and address of the supplier of each of the chemicals hazardous to health.
  • (3)
    The register shall be accessible to all employees at the place of work who may be exposed or are likely to be exposed to chemicals hazardous to health.
  • (4)
    The requirements in subregulations (1) and (2) shall not apply if the employer has complied with the requirements of regulation 9 and subregulation 11(1) of the Environmental Quality (Scheduled Wastes) Regulations 1989 [P. U. (A) 139/89].

PART III - PERMISSIBLE EXPOSURE LIMIT​

Regulation 6. Ceiling limit​

  • An employer shall ensure that the exposure of any person to any chemical hazardous to health listed in Schedule I at no time exceeds the ceiling limit specified for that chemical in that Schedule.

Regulation 7. Eight-hour time-weighted average​

  • (1)
    An employer shall ensure that the exposure of any person to any chemical hazardous to health listed in Schedule I in any eight hour work shift of a work week does not exceed the eight-hour time-weighted average airborne concentration specified for that chemical in that Schedule.
  • (2)
    Notwithstanding subregulation (1), the exposure of any person to any chemical hazardous to health listed in Schedule I shall not exceed the maximum exposure limit for that chemical during the work shift.

Regulation 8. Compliance with permissible exposure limit using respirator​

  • (1)
    For the purpose of determining whether the employer has complied with the permissible exposure limit, the degree of protection afforded by the respirator for the periods during which the respirator is worn shall be taken into account.
  • (2)
    The period referred to in subregulation (1) shall be averaged with the exposure level of the airborne concentration during the period when respirators are not worn to determine the employee's daily time-weighted average exposure.
  • (3)
    For the purpose of this regulation, “degree of protection” means the ratio of the airborne concentration of the contaminant outside the respirator to the concentration of contaminant inside the face piece of the respirator.

PART IV - ASSESSMENT OF RISK TO HEALTH​

Regulation 9. Assessment of risk to health​

  • (1)
    An employer shall not carry out any work which may expose or is likely to expose any employee to any chemical hazardous to health unless he has made a written assessment of the risks created by the chemical to the health of the employee.
  • (2)
    The assessment mentioned in subregulation (1) shall contain the following:
    • (a)
      the potential risks to an employee as a result of exposure to chemicals hazardous to health;
    • (b)
      the method and procedures adopted in the use of the chemicals hazardous to health;
    • (c)
      the nature of the hazard to health;
    • (d)
      the degree of exposure to such chemicals hazardous to health;
    • (e)
      the risk to health created by the use and the release of chemicals from work processes;
    • (f)
      measures and procedures required to control the exposure of an employee to chemicals hazardous to health;
    • (g)
      the measures, procedures, and equipment necessary to control any accidental emission of a chemical hazardous to health as a result of leakage, spillage, or process or equipment failure;
    • (h)
      the necessity for employee exposure monitoring programme;
    • (i)
      the necessity for health surveillance programme;
    • (j)
      the requirement for the training and retraining of employees as required under regulation 22 .
  • (3)
    Where work which may expose or is likely to expose any employee to chemicals hazardous to health was commenced before the coming into operation of these Regulations, the employer shall conduct the assessment within one year from the date of coming into operation of these Regulations.

Regulation 10. Review assessment​

  • The assessment carried out under regulation 9 shall be reviewed if -
    • (a)
      there has been a significant change in the work to which the assessment relates;
    • (b)
      more than five years have elapsed since the last assessment; or
    • (c)
      directed by the Director General, Deputy Director General or the Director of Occupational Safety and Health.

Regulation 11. Assessment to be carried out by an assessor​

  • The employer shall ensure that any assessment carried out pursuant to this Part is conducted by an assessor.

Regulation 12. Assessment of risk to health report​

  • (1)
    Any person appointed by the employer under regulation 11 to carry out any assessment shall, within one month of the completion of the assessment, furnish the employer with a report of the assessment.
  • (2)
    If the assessment carried out under subregulation (1) indicates that a place of work, plant, substance or process is likely to cause immediate danger to life or property, the person carrying out the assessment shall immediately inform the employer about the danger.

Regulation 13. Assessment report​

  • (1)
    The employer shall ensure that the report of the assessment conducted pursuant to regulations 9 or 10 is maintained in good order and condition for a period of not less than thirty years.
  • (2)
    The employer shall make available the assessment report for examination upon request by the Director General or by any employee exposed or likely to be exposed to chemicals hazardous to health.

PART V - ACTION TO CONTROL EXPOSE​

Regulation 14. Action to control exposure​

  • (1)
    Where an assessment report indicates that action is required to eliminate or reduce the actual or potential exposure of an employee to chemicals hazardous to health, an employer shall carry out such action, which may include changes to work processes, practices, procedures, plants or engineering control equipment, within one month after receiving the assessment report from the assessor.
  • (2)
    The employer shall ensure that all control measures implemented under subregulation (1) reduce the exposure level of employees to chemicals hazardous to health to the lowest practicable level, or for those chemicals to which have been assigned with permissible exposure limits, to below the limits.

Regulation 15. Control measures​

  • (1)
    The employer shall control chemicals hazardous to health through the following control measures:
    • (a)
      elimination of chemicals hazardous to health from the place of work;
    • (b)
      substitution of less hazardous chemicals for chemicals hazardous to health;
    • (c)
      total enclosure of the process and handling systems;
    • (d)
      isolation of the work to control the emission of chemicals hazardous to health;
    • (e)
      modification of the process parameters;
    • (f)
      application of engineering control equipment;
    • (g)
      adoption of safe work systems and practices that eliminate or minimise the risk to health; or
    • (h)
      provision of approved personal protective equipment.
  • (2)
    The employer shall ensure that all safe work systems and practices are documented and implemented.
  • (3)
    The employer shall ensure that all safe work systems and practices are reviewed whenever there is a significant change to the process, equipment, materials or control measures installed.

Regulation 16. Use of approved personal protective equipment​

  • (1)
    Approved personal protective equipment shall be used -
    • (a)
      where the application of control measures specified in paragraphs 15(1) (a) to (g) would be impracticable;
    • (b)
      as an interim measure while other preferred control measures are being designed and installed; or
    • (c)
      where the measures taken to comply with paragraphs 15(1) (a) to (g) do not adequately control an employee's exposure to chemicals hazardous to health.
  • (2)
    Where the approved personal protective equipment is used to control exposure to chemicals hazardous to health, the employer shall establish and implement procedures on the issuance, maintenance, inspection and training in the use of the approved personal protective equipment.
  • (3)
    The approved personal protective equipment provided to employees pursuant to subregulation (1) shall -
    • (a)
      be suitable to the type of work in which they are employed;
    • (b)
      fit the employees;
    • (c)
      not adversely affect the health or medical condition of the employees; and
    • (d)
      be in sufficient supply and readily available to employees who require it.

Regulation 17. Engineering control equipment​

  • (1)
    Any engineering control equipment provided pursuant to subparagraph 15(1)(f) shall be -
    • (a)
      inspected at an appropriate intervals by the employer, each interval being no longer than one month; and
    • (b)
      examined and tested for its effectiveness by a hygiene technician at appropriate intervals, each interval being no longer than twelve months.
  • (2)
    Every engineering control equipment shall be maintained and operated at all times while any machinery or plant is in operation, and for such time thereafter as to comply with subregulation 14(2) .

Regulation 18. Design, construction and commissioning of local exhaust ventilation equipment​

  • (1)
    Without prejudice to the requirement of subregulation 17(1) , any local exhaust ventilation equipment installed shall be -
    • (a)
      designed according to an approved standard by a registered professional engineer and constructed according to the design specifications; and
    • (b)
      tested by a registered professional engineer after construction and installation to demonstrate that the equipment meets the design specifications.
  • (2)
    For the purpose of this regulation, “registered professional engineer” means an engineer registered under the Registration of Engineers Act 1967 [Act 138] .

Regulation 19. Records of engineering control equipment​

  • Records of the design, construction, testing, inspection, examination and maintenance of engineering control equipment pursuant to regulations 17 and 18 shall be maintained by the employer and shall be produced for inspection when directed by the Director General.

PART VI - LABELLING AND RELABELLING​

Regulation 20. Duty of employer to ensure labelling​

  • (1)
    An employer shall ensure that all chemicals hazardous to health supplied or purchased by him and used in the place of work are labelled and that the labels are not removed, defaced, modified or altered.
  • (2)
    When the labels mentioned in subregulation (1) are removed, defaced, modified or altered while the chemical hazardous to health is being used at the place of work, the employer shall re-label the chemical.

Regulation 21. Re-labelling​

  • (1)
    When a chemical hazardous to health is transferred to another container, other than that in which it was originally supplied, and the contents of that container are not used within a normal workshift, the employer shall ensure that the container is relabelled.
  • (2)
    If the contents of the container referred to in subregulation (1) are used within a normal workshift the employer shall ensure that the container is relabelled with the chemical name or the trade name as written on the original label.
  • (3)
    If the contents of the container referred to in subregulation (1) are chemicals used in a testing chemical laboratory the container shall be relabelled in accordance with subregulation (2), whether or not the contents are used within a normal workshift.
  • (4)
    Notwithstanding subregulations (1), (2) and (3), the container need not be relabelled if the chemical hazardous to health is used immediately.
  • (5)
    For the purpose of this regulation, “labelling” and “relabelling” means labelling or relabelling -
    • (a)
      in the case of a chemical hazardous to health, in accordance with the requirements of the Occupational Safety and Health (Classification, Packaging and Labelling of Hazardous Chemicals) Regulations 1997 [P. U. (A) 143/97];
    • (b)
      in the case of a pesticide, in accordance with the requirements of the Pesticides Act 1974 [Act 149] ; or
    • (c)
      in the case of a schedule waste, in accordance with the requirements of the Environmental Quality (Schedule Wastes) Regulations 1989 [P. U. (A) 139/89].

PART VII - INFORMATION, INSTRUCTION AND TRAINING​

Regulation 22. Information, instruction and training​

  • (1)
    An employer who undertakes work which may expose or is likely to expose his employees to chemicals hazardous to health shall provide the employees with such information, instruction and training as may be necessary to enable them to know -
    • (a)
      the risk to health created by such exposure; and
    • (b)
      the precautions which should be taken.
  • (2)
    Without prejudice to the generality of subregulation (1), the information provided shall include
    • (a)
      information on the results of any monitoring of exposure at the place of work in accordance to regulation 26 ; and
    • (b)
      information on the collective results of any health surveillance programme undertaken in accordance with regulation 27 and presented in a manner which prevent them from being identified as relating to any particular person.
  • (3)
    The employer shall review and conduct the training programme -
    • (a)
      at least once in two years;
    • (b)
      if there is a change in the hazard information on the chemicals hazardous to health, safe work practices or control measures; or
    • (c)
      each time employees are assigned to new tasks or new work areas where they are exposed or likely to be exposed to chemicals hazardous to health.
  • (4)
    All training programmes shall be documented and kept for inspection by any occupational safety and health officer.

Regulation 23. Information, instruction and supervision of person​

  • Every employer shall ensure that any person and who carries out any work in connection with the employer's duties under these Regulations has the necessary information, instruction and supervision to carry out such duties.

Regulation 24. Chemical Safety Data Sheet​

  • An employer who receives a supply of chemicals hazardous to health for which the chemicals are not labelled or the Chemical Safety Data Sheets have not been provided, shall obtain the relevant information from the supplier and shall not use the chemicals until such information is obtained.

Regulation 25. Provision of Chemical Safety Data Sheet in a place of work​

  • In any place of work where a chemical hazardous to health is used, the current Chemical Safety Data Sheet for that chemical or a copy thereof shall be kept in a conspicuous place close to each location where that chemical is used, and shall be easily accessible to the employees.

PART VIII - MONITORING OF EXPOSURE AT THE PLACE OF WORK​

Regulation 26. Monitoring of exposure​

  • (1)
    Where an assessment of risk to health indicates that monitoring of exposure is required or it is requisite for ensuring the maintenance of adequate control of the exposure of employees to chemicals hazardous to health, the employers shall ensure that the exposure of employees to chemicals hazardous to health is monitored in accordance with an approved method of monitoring and analysis.
  • (2)
    If an employee is exposed or likely to be exposed to chemicals hazardous to health listed in Schedule II , the monitoring of exposure of employees determined in subregulation (1) shall be repeated at intervals of not more than six months or at such shorter intervals as determined by the assessor and the monitoring of exposure shall continue at this frequency until such time the assessor is satisfied that further monitoring of exposure is no longer required.
  • (3)
    The monitoring of exposure shall be conducted by a hygiene technician unless the monitoring is confined to checking the presence of toxic or flammable gases and the level of oxygen in a confined space before entry.
  • (4)
    The employer shall maintain in good order and condition any record or summary of the record of any monitoring carried out for the purpose of these Regulations and shall be kept available -
    • (a)
      where the record is representative of the personal exposure of a person exposed to any chemical hazardous to health, for at least thirty years; and
    • (b)
      in any other case, for at least five years.

PART IX - HEALTH SURVEILLANCE​

Regulation 27. Health surveillance programme​

  • (1)
    Where an assessment indicates that health surveillance is necessary for the protection of the health of employees exposed or likely to be exposed to chemicals hazardous to health, the employer shall carry out a health surveillance programme.
  • (2)
    The medical surveillance component of the health surveillance programme in subregulation (1) shall be carried out by an occupational health doctor.
  • (3)
    If an employee is exposed or likely to be exposed to chemicals hazardous to health listed in Schedule II , the health surveillance required under subregulation (1) shall include medical surveillance conducted at intervals of not more than twelve months or at such shorter intervals as determined by the occupational health doctor or an occupational safety and health officer who is also a medical practitioner.
  • (4)
    The employer shall ensure that the health surveillance record or a copy thereof is maintained in good order and condition and kept for a period of thirty years from the date of the last entry made in it.
  • (5)
    The employer shall make available upon request all records required to be maintained under subregulation (3) to the Director General for examination and inspection.
  • (6)
    The employer shall, after a reasonable notice being given, allow any of his employees access to the health surveillance record which relates to the employee.

PART X - MEDICAL REMOVAL PROTECTION​

Regulation 28. Medical removal protection​

  • (1)
    The employer shall not permit an employee to be engaged in and shall remove him from any work that exposes or likely to expose him to chemicals hazardous to health on each occasion that the medical finding, determination or opinion expressed by an occupational safety and health officer who is also a medical practitioner or by an occupational health doctor shows that the employee has a detected medical condition which places him at increased risk of material impairment to health from exposure to chemicals hazardous to health.
  • (2)
    The employer, after being notified by an occupational safety and health officer who is also a medical practitioner or an occupational health doctor of the fact, shall not permit a pregnant employee or breastfeeding employee to be engaged in, and shall remove the employee from work which may expose or is likely to expose the employee to chemicals hazardous to health.
  • (3)
    The employer shall return an employee to his former job -
    • (a)
      for an employee removed in accordance with subregulation (1), when a subsequent medical determination results in a medical finding, determination or opinion which shows that the employee no longer has the detected medical condition; or
    • (b)
      for an employee removed in accordance with subregulation (2), at the appropriate time where the employee is no longer pregnant or breastfeeding a child.
  • (4)
    For the purpose of this regulation, “medical practitioner” means a medical practitioner registered under the Medical Act 1971 [Act 50] .

PART XI - WARNING SIGN​

Regulation 29. Warning sign​

  • (1)
    Where a chemical hazardous to health is used in any area in any manner that is hazardous to the health of any person who may be in that area or who may be or is likely to be at risk of being affected by the chemicals hazardous to health, the employer shall ensure that -
    • (a)
      warning signs are posted at a conspicuous place at every entrance of the area to warn persons entering the area of the hazards; and
    • (b)
      other relevant information are given to persons who may be or are likely to be at risk of being affected by the chemicals hazardous to health.
  • (2)
    The employer shall ensure that the warning signs required by these Regulations are illuminated and cleaned as necessary so that the legend is readily visible.
  • (3)
    For the purpose of subregulation (1), the warning shall -
    • (a)
      give warning of the hazards;
    • (b)
      be written in the national language and English language; and
    • (c)
      be printed in dark red against white background.

PART XII - RECORD KEEPING​

Regulation 30. Retention of records by employer​

  • (1)
    Whenever an employer ceases to carry on business and another person succeeds him, the employer ceasing business shall hand over, and the successor employer shall retain, all records to be maintained under regulations 13 , 19 , 22 , 26 and 27 .
  • (2)
    Whenever an employer ceases to carry on business and no person succeeds him, the employer shall transmit the records required to be maintained under regulations 13 , 19 , 22 , 26 and 27 to the Director General.
  • (3)
    At the expiration of the retention period for the records required to be maintained under regulations 13 , 26 and 27 the employer shall give the Director General at least three months notice in writing that he intends to dispose of such records, and he shall transmit those records to the Director General, if requested to do so within that period.

SCHEDULES​

SCHEDULE I (Regulation 6 and 7) - LIST OF PERMISSIBLE EXPOSURE LIMITS​

Search 803 rows
CHEMICALCAS8-hr TWA (ppm)8-hr TWA (mg/m³)Ceiling (ppm)Ceiling (mg/m³)
Acetaldehyde[75-07-0]2545
Acetic acid[64-19-7]1025
Acetic anhydride[108-24-7]521
Acetone[67-64-1]5001187
Aceton cyanohydrin as CN- (skin)[75-86-5]4.75
Acetonitrile[75-05-8]4067
Acetophenone[98-66-2]1049
Acetylenedichloride, see 1, 2-Dichloroethylene
Acetylene tetrabromide[79-27-6]114
Acetylsalicylic acid (aspirin)[50-78-2]5
Acrolein (skin)[107-02-8]0.10.23
Acrylamide (skin)[79-06-1]0.03
Acrylic acid (skin)[79-10-7]25.9
Acrylonitrile (skin)[107-13-1]24.3
Adipic acid[124-04-9]5
Adiponitrile (skin)[111-69-3]28.8
Aldrin[309-00-2]0.25
Allyl alcohol (skin)[107-18-6]0.51.2
Allyl chloride[107-05-1]13
Allyl glycidyl ether (AGE)[106-92-3]14.6
Allyl propyl disulfide[2179-59-1]212
α-Alumina, see Aluminium oxide
Aluminium[7429-90-5]
Aluminium[7429-90-5]
  • Metal dust, as Al
10
  • Pyro powders, as Al
5
  • Welding fumes, as Al
5
  • Soluble salts, as Al
2
  • Alkyls (NOC), as Al
2
Aluminium oxide[1344-28-1]10The value is for particulate matter containing no asbestos and <1% crystalline silica.
4-Aminodiphenyl (skin)[92-67-1]
2-Aminoethanol, see Ethanolamine
2-Aminopyridine[504-29-0]0.51.9
3-Amino-1,2,4-triazole, see Amitrole
Amitrole[61-82-5]0.2
Ammonia[7664-41-7]2517
Ammonium chloride fume[12125-02-9]10
Ammonium perfluorooctanoate (skin)[3825-26-1]0.01
Ammonium sulfamate[7773-06-0]10
Amosite, see Asbestos
n-Amyl acetate[628-63-7]100532
sec-Amyl acetate[626-38-0]125665
Aniline and homologues (skin)[62-53-3]27.6
o-Anisidine (skin)[90-04-0]0.10.5
p-Anisidine (skin)[104-94-9]0.1
Antimony and compounds, as Sb[7440-36-0]0.5
Antimony trioxide production[1309-64-4]1
ANTU[86-88-4]0.3
Arsenic, elemental and inorganic compounds (except arsine), as As[7440-38-2]0.01
Arsine[7784-42-1]0.050.16
Asbestos, all forms except crocidolite[1332-21-4]0.1 f/ml
Asphalt (petroleum) fumes[8052-42-4]5
Atrazine[1912-24-9]5
Azinphos-methyl (skin)[86-50-0]0.2
Barium, and soluble compounds, as Ba[7440-39-3]0.5
Barium sulfate[7727-43-7]10
Benomyl[17804-35-2]10
Benz[a]anthracene[56-55-3]
Benzene[71-43-2]0.51.6
Benzidine (skin)[92-87-5]
Benzo[b]fluoroanthene[205-99-2]
p-Benzoquinone, see Quinone
Benzotrichloride (skin)[98-07-7]0.1
Benzoyl chloride[98-88-4]0.52.8
Benzoyl peroxide[94-36-0]5
Benzo[a]pyrene[30-32-8]
Benzyl acetate[140-11-4]1061
Benzyl chloride[100-44-7]15.2
Beryllium and compounds, as Be[7440-41-7]0.002
Biphenyl[92-52-4]0.21.3
Bismuth telluride, as Bi₂Te₃-Undoped[1304-82-1]10
Bismuth telluride, as Bi₂Te₃-Se-doped[1304-82-1]5
Borates, tetra, sodium salts[1303-96-4]
Borates, tetra, sodium salts-Anhydrous1
Borates, tetra, sodium salts-Decahydrate5
Borates, tetra, sodium salts-Pentahydrate1
Boron oxide[1303-86-2]10
Boron tribramide[10294-33-4]110
Boron trifluoride[7637-07-2]12.8
Bromacil[314-40-9]10
Bromine[7726-95-6]0.10.66
Bromine pentafluoride[7789-30-2]0.10.72
Bromochloromethane, see Chlorobromomethane
Bromoform (skin)[75-25-2]0.55.2
1,3-Butadiene[106-99-0]24.4
Butane[106-97-8]8001900
Botanethiol, see Butyl mercaptan
n-Butanol (skin)[71-36-3]50152
sec-Butanol[78-92-2]100303
tert-Butanol[75-65-0]100303
2-Butanone, see Methyl ethyl ketone (MEK)
2-Butoxyethanol (EGBE) (skin)[111-76-2]2096.7
n-Butyl acetate[123-86-4]150713
sec-Butyl acetate[105-46-4]200950
tert-Butyl acetate[540-88-5]200950
n-Butyl acrylate[141-32-2]210.48
n-Butylamine (skin)[109-73-9]51.5
tert-Butyl chromates, as CrO₃ (skin)[1189-85-1]0.1
n-Butyl glycidyl ether (BGE)[2426-08-6]25133
n-Butyl lactate[138-22-7]530
n-Butyl mercaptan[109-79-5]0.51.8
o-sec-Butylphenol (skin)[89-72-5]531
p-tert-Butyl toluene[98-51-1]16.1
Cadmium, elemental and compounds, as Cd[7440-43-9]0.01
Cadmium, elemental and compounds, as Cd[7440-43-9]0.002Respirable fraction.
Calcium carbonate[1317-65-3]10The value is for particulate matter containing no asbestos and <1% crystalline silica.
Calcium chromate, as Cr[13765-19-0]0.001
Calcium cyanamide[156-62-7]0.5
Calcium hydroxide[1305-62-0]5
Calcium oxide[1305-78-8]2
Calcium silicate (synthetic)[1344-95-2]10The value is for particulate matter containing no asbestos and <1% crystalline silica.
Calcium sulfate[7778-18-9]10The value is for particulate matter containing no asbestos and <1% crystalline silica.
Camphor, synthetic[76-22-2]212
Caprolactam[105-60-2]
Caprolactam-Particulate1
Caprolactam-Vapor523
Captafol (skin)[2425-06-1]0.1
Captan[133-06-2]5
Carbaryl[63-25-2]5
Carbofuran[1563-66-2]0.1
Carbon black[1333-86-4]3.5
Carbon dioxide[124-38-9]50009000
Carbon disulfide (skin)[75-15-0]1031
Carbon monoxide[630-08-0]2529
Carbon tetrabromide[558-13-4]0.11.4
Carbon tetrachloride (skin)[56-23-5]531
Carbonyl chloride, see Phosgene
Carbonyl fluoride[353-50-4]25.4
Catechol (skin)[120-80-9]523
Cellulose[9004-34-6]10
Cesium hydroxide[21351-79-1]2
Chlordane (skin)[57-74-9]0.5
Chlorinated camphene (Toxaphene) (skin)[8001-35-2]0.5
o-Chlorinated diphenyl oxide[31242-93-0]0.5
Chlorine[7782-50-5]0.51.5
Chlorine dioxide[10049-04-4]0.10.28
Chlorine trifluoride[7790-91-2]0.10.38
Chloroacetaldehyde (skin)[107-20-0]13.2
Chloroacetone (skin)[78-95-5]13.8
2-Chloroacetophenone[532-27-4]0.050.32
Chloroacetyl chloride (skin)[79-04-9]0.050.23
o-Chlorobenzylidene malononitrile (skin)[2698-41-1]0.050.39
Chlorobenzene[108-90-7]1046
Chlorobromomethane[74-97-5]2001060
2-Chloro-1,3-butadiene, see β-Chloroprene
Chlorodifluoromethane[74-45-6]10003540
Chlorodiphenyl (42% chlorine) (skin)[53469-21-9]1
Chlorodiphenyl (54% chlorine) (skin)[11097-69-1]0.5
1-Chloro-2,3-epoxy propane, see Epichlorohydrin
2-Chloroethanol, see Ethylene chlorohydrin
Chloroethylene, see Vinyl chloride
Chloroform[67-66-3]1049
bis(Chloromethyl) ether[542-88-1]0.0010.0047
Chloromethyl methyl ether[107-30-2]
1-Chloro-1-nitropropane[600-25-9]210
Chloropentafluoroethane[76-15-3]10006320
Chloropicrin[76-06-2]0.10.67
β-Chloroprene (skin)[126-99-8]1036
2-Chloropropionic acid (skin)[598-78-7]0.10.44
o-Chlorostyrene[2039-87-4]50283
o-Chlorotoluene[95-49-8]50259
2-Chloro-6-(trichloromethyl)pyridine, see Nitrapyrin
Chlorpyrifos (skin)[2921-88-2]0.2
Chromite ore processing (Chromate), as Cr0.05
Chromium, metal and inorganic compounds, as Cr[7440-47-3]
Chromium - Metal and Cr III compounds0.5
Chromium - Water-soluble Cr VI compounds, NOC0.05
Chromium - Insoluble Cr VI compounds, NOC0.01
Chromyl chloride[14977-61-8]0.0250.16
Chrysene[218-01-9]
Chrysotile, see Asbestos
Clopidol[2971-90-6]10
Coal dust
  • Anthracite
0.4Respirable fraction.
  • Bituminous
0.9Respirable fraction.
Coal tar pitch volatiles, as benzene solubles[65996-93-2]0.2
Cobalt, elemental and inorganic compounds, as Co[7440-48-4]0.02
Cobalt carbonyl, as Co[10210-68-1]0.1
Cobalt hydrocarbonyl, as Co[16842-03-8]0.1
Copper[7440-50-8]
  • Fume
0.2
  • Dusts & mists as Cu
1
Cotton dust, raw0.2
Cresol, all isomers (skin)[1319-77-3]522
Cristobalite, see Silica - Crystalline
Crocidolite, see Asbestos
Crotonaldehyde (skin)[4170-30-3]0.30.855
Crufomate[299-86-5]5
Cumene (skin)[98-82-8]50246
Cyanamide[420-04-2]2
Cyanogen[460-19-5]1021
Cyanogen chloride[506-77-4]0.30.75
Cyclohexane[110-82-7]3001030
Cyclohexanol (skin)[108-93-0]50206
Cyclohexanone (skin)[108-94-1]25100
Cyclohexene[110-83-8]3001010
Cyclohexylamine[108-91-8]1041
Cyclonite (skin)[121-82-4]0.5
Cyclopentadiene[542-92-7]75203
Cyclopentane[287-92-3]6001720
Cyhexatin[13121-70-5]5
2,4-D[94-75-7]10
DDT (Dichlorodiphenyltrichloroethane)[50-29-3]1
Decaborane (skin)[17702-41-9]0.050.25
Demeton (skin)[8065-48-3]0.010.11
Diacetone alcohol[123-42-2]50238
1,2-Diaminoethane, see Ethylenediamine
Diatomaceous earth, see Silica Amorphous
Diazinon (skin)[333-41-5]0.1
Diazomethane[334-88-3]0.20.34
Diborane[19287-45-7]0.10.11
1,2-Dibromoethane, see Ethylene dibromide
2-N-Dibutylaminoethanol (skin)[102-81-8]0.53.5
Dibutyl phenyl phosphate (skin)[2528-36-1]0.33.5
Dibutyl phosphate[107-66-4]18.6
Dibutyl phthalate[84-74-2]5
Dichloroacetylene[7572-29-4]0.10.39
o-Dichlorobenzene[95-50-1]25150
p-Dichlorobenzene[106-46-7]1060
3,3'-Dichlorobenzidine (skin)[91-94-1]
1,4-Dichloro-2-butene (skin)[764-41-0]0.0050.025
Dichlorodifluoromethane[75-71-8]10004950
1,3-Dichloro-5,5-dimethyl hydantoin[118-52-5]0.2
1,1-Dichloroethane[75-34-3]100405
1,2-Dichloroethane, see Ethylene dichloride
1,1-Dichloroethylene, see Vinylidene chloride
1,2-Dichloroethylene[540-59-0]200793
Dichloroethyl ether (skin)[111-44-4]529
Dichlorofluoromethane[75-43-4]1042
Dichloromethane[75-09-2]50
1,1-Dichloro-1-nitroethane[594-72-9]212
1,2-Dichloropropane, see Propylene dichloride
1,3-Dichloropropene (skin)[542-75-6]14.5
2,2-Dichloropropionic acid[75-99-0]15.8
Dichlorotetrafluoroethane[76-14-2]10006990
Dichlorvos (skin)[62-73-7]0.10.90
Dicrotophos (skin)[141-66-2]0.25
Dicyclopentadiene[77-73-6]527
Dicyclopentadienyl iron[102-54-5]10
Dieldrin (skin)[60-57-1]0.25
Diethanolamine (skin)[111-42-2]0.462
Diethylamine (skin)[109-89-7]515
2-Diethylaminoethanol (skin)[100-37-8]29.6
Diethylene triamine (skin)[111-40-0]14.2
Diethyl ether, see Ethyl ether
Di(2-ethylhexyl) phthalate (DEHP)[117-81-7]5
Diethyl ketone[96-22-0]200705
Diethyl phthalate[84-66-2]5
Difluorodibromomethane[75-61-6]100858
Diglycidyl ether (DGE)[2238-07-5]0.10.53
Dihydroxybenzene, see Hydroquinone
Diisobutyl ketone[108-83-8]25145
Diisopropylamine (skin)[108-18-9]521
Dimethoxymethane, see Methylal
N,N-Dimethylacetamide (skin)[127-19-5]1036
Dimethylamine[124-40-3]59.2
Dimethylaminobenzene, see Xylidene
Dimethylaniline (N,N-Dimethylaniline) (skin)[121-69-7]525
Dimethylbenzene, see Xylene
Dimethyl carbamoyl chloride[79-44-7]
Dimethyl-1,2-dibromo-2,2-dichloroethyl phosphate, see Naled
Dimethylethoxysilane[14857-34-2]0.5
Dimethylformamide (skin)[68-12-2]1030
2,6-Dimethyl-4-heptanone, see Diisobutyl ketone
1,1-Dimethylhydrazine (skin)[57-14-7]0.010.025
Dimethylnitrosoamine, see N-Nitrosodimethylamine
Dimethylphthalate[131-11-3]5
Dimethyl sulfate (skin)[77-78-1]0.10.52
Dinitolmide[148-01-6]5
Dinitrobenzene (all isomers) (skin)[528-29-0; 99-65-0; 100-25-4]0.151.0
Dinitro-o-cresol (skin)[534-52-1]0.2
3,5-Dinitro-o-toluamide, see Dinitolmide
Dinitrotoluene (skin)[25321-14-6]0.2
1,4-Dioxane (skin)[123-91-1]2072.1
Dioxathion (skin)[78-34-2]0.2
Diphenyl, see Biphenyl
Diphenylamine[122-39-4]10
Diphenylmethane diisocyanate, see Methylene bisphenyl isocyanate
Dipropylene glycol methyl ether (skin)[34590-94-8]100606
Dipropyl ketone[123-19-3]50233
Diquat (skin)[2764-72-9]0.5
0.1Respirable fraction.
Di-sec-octyl phthalate, see Di(2-ethylhexyl)phthalate
Disulfiram[97-77-8]2
Disulfoton (skin)[298-04-4]0.1
2,6-Di-tert-butyl-p-cresol [Butylated hydroxytoluene (BHT)][128-37-0]10
Diuron[330-54-1]10
Divinyl benzene[1321-74-0]1053
Emery[1302-74-5]10The value is for particulate matter containing no asbestos and <1% crystalline silica.
Endosulfan (skin)[115-29-7]0.1
Endrin (skin)[72-20-8]0.1
Enflurane[13838-16-9]75566
Enzymes, see Subtilisins
Epichlorohydrin (skin)[108-89-8]0.51.9
EPN (skin)[2104-64-5]0.1
1,2-Epoxypropane, see Propylene oxide
2,3-Epoxy-1-propanol, see Glycidol
Ethanethiol, see Ethyl mercaptan
Ethanol[64-17-5]10001880
Ethanolamine[141-43-5]37.5
Ethion (skin)[563-12-2]0.4
2-Ethoxyethanol (EGEE) (skin)[110-80-5]518
2-Ethoxyethyl acetate (EGEEA) (skin)[111-15-9]527
Ethyl acetate[141-78-6]4001440
Ethyl acrylate[140-88-5]520
Ethyl alcohol, see Ethanol
Ethylamine (skin)[75-04-7]59.2
Ethyl amyl ketone[541-85-5]25131
Ethyl benzene[100-41-4]100434
Ethyl bromide (skin)[74-96-4]522
Ethyl butyl ketone[106-35-4]30234
Ethyl chloride (skin)[75-00-3]100264
Ethyl cyanoacrylate[7085-85-0]0.2
Ethylene chlorohydrin (skin)[107-07-3]13.3
Ethylenediamine (skin)[107-15-3]1025
Ethylene dibromide (skin)[106-93-4]
Ethylene dichloride[107-06-2]1040
Ethylene glycol, aerosol[107-21-1]39.4100
Ethylene glycol dinitrate (skin)[628-96-6]0.050.31
Ethylene glycol methyl ether acetate, see 2-Methoxyethyl acetate
Ethylene oxide[75-21-8]11.8
Ethylenimine (skin)[151-56-4]0.50.88
Ethyl ether[60-29-7]4001210
Ethyl formate[109-94-4]100303
Ethylidene chloride, see 1,1-Dichloroethane
Ethylidene norbornene[16219-75-3]525
Ethyl mercaptan[75-08-1]0.51.3
N-Ethylmorpholine (skin)[100-74-3]524
Ethyl silicate[78-10-4]1085
Fenamiphos (skin)[22224-92-6]0.1
Fensulfothion[115-90-2]0.1
Fenthion (skin)[55-38-9]0.2
Ferbam[14484-64-1]10
Ferrovanadium dust[12604-58-9]1
Fibrous glass dust, see Synthetic Vitreous Fibers - Continuous Filament glass fibers
Fluorides, as F2.5
Fluorine[7782-41-4]11.6
Fluorotrichloromethane, see Trichlorofluoromethane
Fonofos (skin)[944-22-9]0.1
Formaldehyde[50-00-0]0.30.37
Formamide (skin)[75-12-7]1018
Formic acid[64-18-6]59.4
Furfural (skin)[98-01-1]27.9
Furfuryl alcohol (skin)[98-00-0]1040
Gasoline[8006-61-9]300890
Germanium tetrahydride[7782-65-2]0.20.63
Glass, fibrous or dust, see Synthetic Vitreous Fibers
Glutaraldehyde, activated and inactivated[111-30-8]0.050.21
Glycerin mist[56-81-5]10
Glycidol[536-52-5]26.1
Glycol monoethyl ether, see 2-Ethoxyethanol
Grain dust (oat, wheat, barley)4The value is for particulate matter containing no asbestos and <1% crystalline silica.
Graphite (all forms except graphite fibres)[7782-42-5]2Respirable fraction.
Gypsum, see Calcium sulfate
Hafnium[7440-38-6]0.5
Halothane[151-67-7]50404
Heptachlor (skin)[76-44-8]0.05
Heptachlor epoxide (skin)[1024-57-3]0.05
Heptane (n-Heptane)[142-82-5]4001640
2-Heptanone, see Methyl n-amyl ketone
3-Heptanone, see Ethyl butyl ketone
Hexachlorobenzene (skin)[118-74-1]0.002
Hexachlorobutadiene (skin)[87-68-3]0.020.21
Hexachlorocyclopentadiene[77-47-4]0.010.11
Hexachloroethane (skin)[67-72-1]19.7
Hexachloronaphthalene (skin)[1335-87-1]0.2
Hexafluoroacetone (skin)[684-16-2]0.10.68
Hexamethylene diisocyanate[822-06-0]0.0050.034
Hexamethyl phosphoramide[680-31-9]
n-Hexane (skin)[110-54-3]50176
Hexane, Other isomers5001760
1,6-Hexanediamine[124-90-4]0.52.3
2-Hexanone, see Methyl n-butyl ketone
1-Hexene[592-41-6]30
sec-Hexyl acetate[108-84-9]50295
Hexylene glycol[107-41-5]25121
Hydrazine (skin)[302-01-2]0.010.013
Hydrogenated terphenyls (nonirradiated)[61788-32-7]0.54.9
Hydrogen bromide[10035-10-6]39.9
Hydrogen chloride[7647-01-0]57.5
Hydrogen cyanide and cyanide salts as CN
Hydrogen cyanide (skin)[74-90-8]4.75
(CN salt) Calcium cyanide (skin)[592-01-8]5
(CN salt) Potassium cyanide (skin)[151-50-8]5
(CN salt) Sodium cyanide (skin)[143-33-9]5
Hydrogen fluoride, as F[7664-39-3]32.3
Hydrogen peroxide[7722-84-1]11.4
Hydrogen selenide, as Se[7783-07-5]0.050.16
Hydrogen sulfide[7783-06-4]1014
Hydroquinone[123-31-9]2
4-Hydroxy-4-methyl-2-pentanone, see Diacetone alcohol
2-Hydroxypropyl acrylate (skin)[999-61-1]0.52.8
Indene[95-13-6]1048
Indium & compounds, as In[7440-74-6]0.1
Iodine[7553-56-2]0.11.0
Iodoform[75-47-8]0.610
Iron oxide dust & fume (Fe₂O₃), as Fe[1309-37-1]25
Iron pentacarbonyl, as Fe[13463-40-6]0.10.23
Iron salts, soluble, as Fe1
Isoamyl acetate[123-92-2]100532
Isoamyl alcohol[123-51-3]100361
Isobutyl acetate[110-19-0]150713
Isobutyl alcohol[78-83-1]50152
Isooctyl alcohol (skin)[26952-21-6]50266
Isophorone[78-59-1]528
Isophorone diisocyanate[4098-71-9]0.0050.045
2-Isopropoxyethanol (skin)[109-59-1]25106
Isopropyl acetate[108-21-4]2501040
Isopropyl alcohol[67-63-0]400983
Isopropylamine[75-31-0]512
N-Isopropylaniline (skin)[768-52-5]211
Isopropyl ether[108-20-3]2501040
Isopropyl glycidyl ether (IGE)[4016-14-2]50238
Kaolin[1332-58-7]2The value is for particulate matter containing no asbestos and <1% crystalline silica. Respirable fraction.
Ketene[463-51-4]0.50.86
Lead, elemental and inorganic compounds, as Pb[7439-92-1]0.05
Lead arsenate, as Pb₃(AsO₄)₂[7784-40-9]0.15
Lead chromate[7758-97-6]
Lead chromate as Pb0.05
Lead chromate as Cr0.012
Limestone, see Calcium carbonate
Lindane (skin)[58-89-9]0.5
Lithium hydride[7580-67-8]0.025
L.P.G. (Liquified petroleum gas)[68476-85-7]10001800
Magnesite[546-93-0]10The value is for particulate matter containing no asbestos and <1% crystalline silica.
Magnesium oxide fume[1309-48-4]10
Malathion (skin)[121-75-5]10
Maleic anhydride[108-31-6]0.251.0
Manganese, elemental and inorganic compounds, as Mn[7439-96-5]0.2
Manganese cyclopentadienyl tricarbonyl, as Mn (skin)[12079-65-1]0.1
Marble, see Calcium carbonate
Mercury, as Hg (skin)[7439-97-6]
(Mercury) Alkyl compounds
0.01
(Mercury) Aryl compounds
0.1
(Mercury) Inorganic forms including metallic mercury
0.025
Mesityl oxide[141-79-7]1560
Methacrylic acid[79-41-4]2070
Methanethiol, see Methyl mercaptan
Methanol (skin)[67-56-1]200262
Methomyl[16752-77-5]2.5
Methoxychlor[72-43-5]10
2-Methoxyethanol (EGME) (skin)[109-86-4]516
2-Methoxyethyl acetate (EGMEA) (skin)[110-49-6]524
4-Methoxyphenol[150-76-5]5
Methyl acetate[79-20-9]200606
Methyl acetylene[74-99-7]10001640
Methyl acetylene-propadiene mixture (MAPP)10001640
Methyl acrylate (skin)[96-33-3]27
Methylacrylonitrile (skin)[126-98-7]12.7
Methylal[109-87-5]10003110
Methyl alcohol, see Methanol
Methylamine[74-89-5]56.4
Methyl amyl alcohol, see Methyl isobutyl carbinol
Methyl n-amyl ketone[110-43-0]50233
N-Methyl aniline (skin)[100-61-8]0.52.2
Methyl bromide (skin)[74-83-9]13.8
Methyl-tert-butyl ether[1634-04-4]40144
Methyl n-butyl ketone (skin)[591-78-6]520
Methyl chloride (skin)[74-87-3]50103
Methyl chloroform[71-55-6]3501910
Methyl 2-cyanoacrylate[137-05-3]0.24.55
Methylcyclohexane[108-87-2]4001610
Methylcyclohexanol[25639-42-3]50234
o-Methylcyclohexanone (skin)[583-60-8]50229
2-Methylcyclopentadienyl manganese tricarbonyl, as Mn (skin)[12108-13-3]0.2
Methyl demeton (skin)[8022-00-2]0.5
Methylene bisphenyl isocyanate (MDI)[101-68-8]0.0050.051
Methylene chloride, see Dichloromethane
4,4'-Methylene bis (2-chloroaniline) [MOCA; MBOCA] (skin)[101-14-4]0.010.11
Methylene bis (4-cyclohexylisocyanate)[5124-30-1]0.0050.054
4,4'-Methylene dianiline (skin)[101-77-9]0.10.81
Methyl ethyl ketone (MEK)[78-93-3]200590
Methyl ethyl ketone peroxide[1338-23-4]0.21.5
Methyl formate[107-31-3]100246
5-Methyl-3-heptanone, see Ethyl amyl ketone
Methyl hydrazine (skin)[60-34-4]0.010.019
Methyl iodide (skin)[74-88-4]212
Methyl isoamyl ketone[110-12-3]50234
Methyl isobutyl carbinol (skin)[108-11-2]25104
Methyl isobutyl ketone[108-10-1]50205
Methyl isocyanate (skin)[624-83-9]0.020.047
Methyl isopropyl ketone[563-80-4]200705
Methyl mercaptan[74-93-1]0.50.98
Methyl methacrylate[80-62-6]100410
Methyl parathion (skin)[298-00-0]0.2
Methyl propyl ketone[107-87-9]200705
Methyl silicate[681-84-5]16
α-Methyl styrene[98-83-9]50242
Methyl vinyl ketone (skin)[78-94-4]0.2
Metribuzin[20187-64-9]5
Mevinphos (skin)[7786-34-7]0.010.09
Mica[12001-26-2]3The value is for particulate matter containing no asbestos and <1% crystalline silica. Respirable fraction.
Mineral wool fibre, see Synthetic Vitreous Fibres - Glass, Rock, or Slag wool fibres
Molybdenum, as Mo Soluble compounds[7439-98-7]5
Metal and insoluble compounds10
Monochlorobenzene, see Chlorobenzene
Monocrotophos (skin)[6923-22-4]0.25
Morpholine (skin)[110-91-8]2071
Naled (skin)[300-76-5]3
Naphthalene[91-20-3]1052
β-Naphthylamine[91-59-8]
Nickel[7440-02-0]
(Nickel) Elemental/Metal
1.5Inhalable fraction.
(Nickel) Insoluble compounds, as Ni
0.2Inhalable fraction.
(Nickel) Soluble compounds, as Ni
0.1Inhalable fraction.
Nickel carbonyl, as Ni[13463-39-3]0.050.12
Nickel subsulfide, as Ni[12035-72-2]0.1Inhalable fraction.
Nickel sulfide roasting, fume & dust, see Nickel subsulfide
Nicotine (skin)[54-11-5]0.5
Nitrapyrin[1929-82-4]10
Nitric acid[7697-37-2]25.2
Nitric oxide[10102-43-9]2531
p-Nitroaniline (skin)[100-01-6]3
Nitrobenzene (skin)[98-95-3]15
p-Nitrochlorobenzene (skin)[100-00-5]0.10.64
4-Nitrodiphenyl (skin)[92-93-3]
Nitroethane[79-24-3]100307
Nitrogen dioxide[10102-44-0]35.6
Nitrogen trifluoride[7783-54-2]1029
Nitroglycerin (NG) (skin)[55-63-0]0.050.46
Nitromethane[75-52-5]2050
1-Nitropropane[108-03-2]2591
2-Nitropropane[79-46-9]1036
N-Nitrosodimethylamine (skin)[62-75-9]
Nitrotoluene (skin)[88-72-2 ; 99-08-1 ; 99-99-0]211
Nitrotrichloromethane, see Chloropicrin
Nitrous oxide[10024-97-2]5090
Nonane all isomers[111-84-2]2001050
Nuisance particulates, see Particulates Not Otherwise Classified (PNOC)
Octachloronaphthalene (skin)[2234-13-1]0.1
Octane (all isomers)[111-65-9]3001400
Oil mist, mineral5
Osmium tetroxide, as Os[20816-12-0]0.00020.0016
Oxalic acid[144-62-7]1
Oxygen difluoride[7783-41-7]0.050.11
Ozone[10028-15-6]
  • Heavy work
0.05
  • Moderate work
0.08
  • Light work
0.10
  • Heavy, moderate, or light workloads (≤ 2 hours)
0.20
Paraffin wax fume[8002-74-2]2
Paraquat[4685-14-7]
(Paraquat) Total particulate
0.5
(Paraquat) Respirable fraction
0.1
Parathion (skin)[56-38-2]0.1
Particulate polycyclic aromatic hydrocarbons (PPAH), see Coal tar pitch volatiles
Particulates Not Otherwise Classified (PNOC)
  • Inhalable particulate
10The value is for particulate matter containing no asbestos and <1% crystalline silica. Inhalable fraction.
  • Respirable particulate
3The value is for particulate matter containing no asbestos and <1% crystalline silica. Respirable fraction.
Pentaborane[19624-22-7]0.0050.013
Pentachloronaphthalene (skin)[1321-64-8]0.5
Pentachloronitrobenzene[82-68-8]0.5
Pentachlorophenol (skin)[87-86-5]0.5
Pentaerythritol[115-77-5]10
Pentane (all isomers)6001770
2-Pentanone, see Methyl propyl ketone
Perchloroethylene (Tetrachloroethylene)[127-18-4]25170
Perchloromethyl mercaptan[594-42-3]0.10.76
Perchloryl fluoride[7616-94-6]313
Perfluoroisobutylene[382-21-8]0.010.082
Percipitated silica, see Silica - Amorphous
Perlite[93763-70-3]10The value is for particulate matter containing no asbestos and <1% crystalline silica.
Persulfates
  • Ammonium
[7727-54-0]0.1
  • Potassium
[7727-21-1]0.1
  • Sodium
[7775-27-1]0.1
Petroleum distillates, see Gasoline, Stoddard solvent; VM&P naphtha Phenacyl chloride, see 2-Chloroacetophenone
Phenol (skin)[108-95-2]519
Phenothiazine (skin)[92-84-2]5
N-Phenyl-beta-naphthylamine[135-88-6]
o-Phenylenediamine[95-54-5]0.1
m-Phenylenediamine[108-45-2]0.1
p-Phenylenediamine[106-50-3]0.1
Phenyl ether, vapour[101-84-8]17
Phenylethylene, see Styrene, monomer
Phenyl glycidyl ether (PGE) (skin)[122-60-1]0.10.6
Phenylhydrazine[100-63-0]0.1
Phenyl mercaptan[108-98-5]0.52.3
Phenylphosphine[638-21-1]0.050.23
Phorate (skin)[298-02-2]0.05
Phosdrin, see Mevinphos
Phosgene[75-44-5]0.10.40
Phosphine[7803-51-2]0.30.42
Phosphoric acid[7664-38-2]1
Phosphorus (yellow)[7723-14-0]0.020.1
Phosphorus oxychloride[10025-87-3]0.10.63
Phosphorus pentachloride[10026-13-8]0.10.85
Phosphorus pentasulfide[1314-80-3]1
Phosphorus trichloride[7719-12-2]0.21.1
Phthalic anhydride[85-44-9]16.1
m-Phthalodinitrile[626-17-5]5
Picloram[1918-02-1]10
Picric acid[88-89-1]0.1
Pindone[83-26-1]0.1
Piperazine dihydrochloride[142-64-3]5
2-Pivalyl-1,3-indandione, see Pindone
Plaster of Paris, see Calcium sulfate
Platinum[7440-06-4]
  • Metal
1
  • Soluble salts, as Pt
0.002
Polychlorobiphenyls, see Chlorodiphenyls
Polytetrafluoroethylene decomposition Products
Portland cement[65997-15-1]10The value is for particulate matter containing no asbestos and <1% crystalline silica.
Potassium hydroxide[1310-58-3]2
Propane[74-98-6]2500
Propane sultone[1120-71-4]
Propargyl alcohol (skin)[107-19-7]12.3
β-Propiolactone[57-57-8]0.51.5
Propionic acid[79-09-4]1030
Propoxur[114-26-1]0.5
n-Propyl acetate[109-60-4]200835
n-Propyl alcohol (skin)[71-23-8]200492
Propylene dichloride[78-87-5]75347
Propylene glycol dinitrate (skin)[6423-43-4]0.050.34
Propylene, glycol mono-methyl ether[107-98-2]100369
Propylene imine (skin)[75-55-8]24.7
Propylene oxide[75-56-9]2048
n-Propyl nitrate[627-13-4]25107
Propyne, see Methyl acetylene
Pyrethrum[803-34-7]5
Pyridine[110-86-1]516
Pyrocatechol, see Catechol
Quartz, see Silica - Crystalline
Quinone[106-51-4]0.10.44
Resorcinol[108-46-3]1045
Rhodium[7440-16-6]
  • Metal
1
  • Insoluble compounds, as Rh
1
  • Soluble compounds, as Rh
0.01
Ronnel[299-84-3]10
Resin core solder thermal decomposition products, as resin acids - colophony[8050-09-7]Sensitizer, reduce exposure to as low as possible.
Rotenone (commercial)[83-79-4]5
Rubber Fume (Limits relate to cyclohexane soluble material)0.75
Rubber Process Dust8
Rubber solvent (Naphtha)[8030-30-6]4001590
Selenium and compounds, as Se[7782-49-2]0.2
Selenium hexafluoride, as Se[7783-79-1]0.050.16
Sesone[136-78-7]10
Silane, see Silicon tetrahydride
Silica Amorphous Diatomaceous earth (uncalcined)[61790-53-2]
  • Inhalable particulate
10The value is for particulate matter containing no asbestos and <1% crystalline silica. Inhalable fraction.
  • Respirable particulate
3The value is for particulate matter containing no asbestos and <1% crystalline silica. Respirable fraction.
  • Percipitated silica
[112926-00-8]10
  • Silica, fume
[69012-64-2]2Respirable fraction.
  • Silica, fused
[60676-86-0]0.1Respirable fraction.
  • Silica gel
[112926-00-8]10
Silica - Crystalline
  • Cristobalite
[14464-46-1]0.05Respirable fraction.
  • Quartz
[14808-60-7]0.1Respirable fraction.
  • Tridymite
[15468-32-3]0.05Respirable fraction.
  • Tripoli
[1317-95-9]0.1of contained respirable quartz. Respirable fraction.
Silicon[7440-21-3]10
Silicon carbide[409-21-2]10The value is for particulate matter containing no asbestos and <1% crystalline silica.
Silicon tetrahydride[7803-62-5]56.6
Silver[7440-22-4]
  • Metal
0.1
  • Soluble compounds, as Ag
0.01
Soapstone
  • Inhalable dust
6The value is for particulate matter containing no asbestos and <1% crystalline silica.
  • Respirable dust
3The value is for particulate matter containing no asbestos and <1% crystalline silica. Respirable fraction.
Sodium azide[26628-22-8]
  • as Sodium azide
0.29
  • as Hydrazoic acid vapour
0.11
Sodium bisulfite[7631-90-5]5
Sodium 2,4-dichloro-phenoxyethyl sulfate, see Sesone
Sodium fluoroacetate (skin)[62-74-8]0.05
Sodium hydroxide[1310-73-2]2
Sodium metabisulfite[7681-57-4]5
Starch[9005-25-8]10
Stearates10
Stibine[7803-52-3]0.10.51
Stoddard solvent[8052-41-3]100525
Strontium chromate, as Cr[7789-06-2]0.0005
Strychnine[57-24-9]0.15
Styrene, monomer (skin)[100-42-5]2085.2
Subtilisins (Proteolytic enzymes as 100% pure crystalline enzyme)[1395-21-7; 9014-01-1]0.00006
Sucrose[57-50-1]10
Sulfometuron methyl[74222-97-2]5
Sulfotep (skin)[3689-24-5]0.2
Sulfur dioxide[7446-09-5]25.2
Sulfur hexafluoride[2551-62-4]10005970
Sulfuric acid[7664-93-9]1
Sulfur monochloride[10025-67-9]15.5
Sulfur pentafluoride[5714-22-7]0.010.10
Sulfur tetrafluoride[7783-60-0]0.10.44
Sulfuryl fluoride[2699-79-8]521
Sulprofos[35400-43-2]1
Synthetic Vitreous Fibres (SVF)
  • Continuous filament glass fibres
1f/mlFibres longer than 5μm and with an aspect ratio ≥ 3:1 (phase contrast illumination).
  • Glass wool fibres
1f/ml- ditto -
  • Rock wool fibres
1f/ml- ditto -
  • Slag wool fibres
1f/ml- ditto -
  • Special purpose glass fibres
1f/ml- ditto -
  • Continuous filament glass fibre
5Inhalable fraction.
Systox, see Demeton
2,4,5-T[93-76-5]10
Talc (containing no asbestos fibres)[14807-96-6]2Respirable fraction of particulate matter.
Talc (containing asbestos fibres), see Asbestos
Tantalum, metal and oxide dust, as Ta[7440-25-7]
Tantalum pentoxide[1314-61-0]5
TEDP, see Sulfotep
Tellurium and compounds, except hydrogen telluride, as Te[13494-80-9]0.1
Tellurium hexafluoride[7783-80-4]0.020.10
Temephos[3383-96-8]10
Terephthalic acid[100-21-0]10
TEPP (skin)[107-49-3]0.0040.05
Terphenyls[26140-60-3]0.55
1,1,1,2-Tetrachloro-2,2-difluoroethane[76-11-9]5004170
1,1,2,2-Tetrachloro-1,2-difluoroethane[76-12-0]5004170
1,1,2,2-Tetrachloroethane (skin)[79-34-5]16.9
Tetrachloroethylene, see Perchloroethylene
Tetrachloromethane, see Carbon tetrachloride
Tetrachloronaphthalene[1335-88-2]2
Tetraethyl lead, as Pb (skin)[78-00-2]0.1
Tetrahydrofuran[109-99-9]200590
Tetramethyl lead, as Pb (skin)[75-74-1]0.15
Tetramethyl succinonitrile (skin)[3333-52-6]0.52.8
Tetranitromethane[509-14-8]0.0050.04
Tetrasodium pyrophosphate[7722-88-5]
  • Anhydride
5
  • Decahydrate
5
Tetryl[479-45-8]1.5
Thallium, elemental and soluble compounds, as Tl (skin)[7440-28-0]0.1
4,4'-Thiobis(6-tert-butyl-m-cresol)[96-69-5]10
Thioglycolic acid (skin)[68-11-1]13.8
Thionyl chloride[7719-09-7]14.9
Thiram[137-26-8]1
Tin[7440-31-5]
  • Metal
2
  • Oxide & inorganic compounds, except Tin hydride, as Sn
2
  • Organic compounds, as Sn (skin)
0.1
Titanium dioxide[13463-67-7]10
o-Tolidine (skin)[119-93-7]
Toluene (skin)[108-88-3]50188
Toluene-2,4-diisocyanate (TDI)[584-84-9]0.0050.036
o-Toluidine (skin)[95-53-4]28.8
m-Toluidine (skin)[108-44-1]28.8
p-Toluidine (skin)[106-49-0]28.8
Toluol, see Toluene
Toxaphene, see Chlorinated camphene
Tributyl phosphate[126-73-8]0.22.2
Trichloroacetic acid[76-03-9]16.7
1,2,4-Trichlorobenzene[120-82-1]537
1,1,1-Trichloroethane, see Methyl chloroform
1,1,2-Trichloroethane (skin)[79-00-5]1055
Trichloroethylene[79-01-6]50269
Trichlorofluoromethane[75-69-4]10005620
Trichloromethane, see Chloroform
Trichloronaphthalene (skin)[1321-65-9]5
Trichloronitromethane, see Chloropicrin
1,2,3-Trichloropropane (skin)[96-18-4]1060
1,1,2-Trichloro-1,2,2-trifluoroethane[76-13-1]10007670
Tricyclohexyltin hydroxide, see Cyhexatin
Tridymite, see Silica - Crystalline
Triethanolamine[102-71-6]5
Triethylamine (skin)[121-44-8]14.1
Trifluorobromomethane[75-63-8]10006090
1,3,5-Triglycidyl-s-triazinetrione[2451-62-9]0.05
Trimellitic anhydride[552-30-7]0.04
Trimethylamine[75-50-3]512
Trimethyl benzene (mixed isomers)[25551-13-7]25123
Trimethyl phosphite[121-45-9]210
2,4,6-Trinitrophenol, see Picric acid
2,4,6-Trinitrophenylmethylnitramine, see Tetryl
2,4,6-Trinitrotoluene (TNT) (skin)[118-96-7]0.1
Triorthocresyl phosphate (skin)[78-30-8]0.1
Triphenyl amine[603-34-9]5
Triphenyl phosphate[115-86-6]3
Tripoli, see Silica-Crystalline
Tungsten, as W[7440-33-7]
  • Metal and insoluble compounds
5
  • Soluble compounds
1
Turpentine[8006-64-2]100556
n-Valeraldehyde[110-62-3]50176
Vanadium pentoxide as V2O5; respirable dust or fume[1314-62-1]0.05
Vegetable oil mist10
Vinyl acetate[108-05-4]1035
Vinyl benzene, see Styrene
Vinyl bromide[593-60-2]0.522
Vinyl chloride[75-01-4]12.6
Vinyl cyanide, see Acrylonitrile
4-Vinyl cyclohexene[100-40-3]0.10.4
Vinyl cyclohexene dioxide (skin)[106-87-6]0.10.57
Vinyl fluoride[75-02-5]1
Vinylidene chloride[75-35-4]520
Vinylidene fluoride[75-38-7]500
Vinyl toluene[25013-15-4]50242
VM & P Naphtha[8032-32-4]3001370
Warfarin[81-81-2]0.1
Welding fumes (NOC)5
Wood dust
  • (hard woods)
1
  • Soft wood
5
Xylene (o-, m-, p-isomers)[1130-20-7; 95-47-6; 108-38-3; 106-42-3]100434
m-Xylene α,α'-diamine (skin)[1477-50-0]0.1
Xylidine (mixed isomers) (skin)[1300-73-8]0.52.5
Yttrium metal & compounds, as Y[7440-65-5]1
Zinc chloride fume[7646-85-7]1
Zinc chromates, as Cr[13530-65-9; 11103-86-9; 37300-23-5]0.01
Zinc oxide[1314-13-2]
  • Fume
5
  • Dust
10
Zirconium and compounds, as Zr[7440-67-7]5

SCHEDULE II [Subregulation 27(3)] - CHEMICALS FOR WHICH MEDICAL SURVEILLANCE IS APPROPRIATE​

  • 1.
    4-Aminodiphenyl
  • 2.
    Arsenic and any of its compounds
  • 3.
    Asbestos (all forms except crocidolite)
  • 4.
    Auramine, Magenta
  • 5.
    Benzidine
  • 6.
    Beryllium
  • 7.
    Cadmium and any of its compounds
  • 8.
    Carbon disulphide
  • 9.
    Disulphur dichloride
  • 10.
    Benzene including benzol
  • 11.
    Carbon tetrachloride
  • 12.
    Trichloroethylene
  • 13.
    n-Hexane
  • 14.
    bis (Chloromethyl) ether
  • 15.
    Chromic acid
  • 16.
    Chromium, metal and inorganic compounds, e.g. Water-soluble Cr VI compounds, Insoluble Cr VI compounds
  • 17.
    Free crystalline silica
  • 18.
    Isocyanates
  • 19.
    Lead (including organic lead compounds)
  • 20.
    Manganese
  • 21.
    Mercury
  • 22.
    Mineral oil including paraffin
  • 23.
    β-Naphthylamine
  • 24.
    1-Naphthylamine and its salts
  • 25.
    Orthotolidine and its salts
  • 26.
    Dianisidine and its salts
  • 27.
    Dichlorobenzidine and its salts
  • 28.
    4-Nitrodiphenyl
  • 29.
    Nitro or amino derivatives of phenol and of benzene or its homologues
  • 30.
    Nitrous fumes. Chromate or dichromate of potassium, sodium, ammonium or zinc
  • 31.
    Pesticides
  • 32.
    Pitch
  • 33.
    Tar, bitumen or creosote
  • 34.
    Vinyl chloride monomer (VCM)

SCHEDULE III [Paragraph 5(2)(b)] - INFORMATION ON PESTICIDES​

  • 1.
    A statement of the common name of the pesticide, if available, its trade and chemical name, and structural formula, and of the name and concentration of every active ingredient of the pesticide.
  • 2.
    The name and concentration of every other ingredient of the pesticide.
  • 3.
    The toxicological information on every ingredient of the pesticide and on the pesticide as a whole.
  • 4.
    The instructions for, and the precautionary measures to be taken in connexion with the use of the pesticide.
  • 5.
    The name, address and telephone number of the supplier and manufacture of the pesticide.