You're using an outdated browser. This website will not display correctly and some features will not work.
Learn more about the browsers we support for a faster and safer online experience.

Important: This version of the e-Laws website will be upgraded to a new version in the coming weeks.
You can try the beta version of the new e-Laws at ontario.ca/laws-beta.

O. Reg. 100/04: Control of Exposure to Biological or Chemical Agents

filed April 21, 2004 under Occupational Health and Safety Act, R.S.O. 1990, c. O.1

Skip to content

 

ontario regulation 100/04

made under the

occupational health and safety act

Made: April 14, 2004
Filed: April 21, 2004
Printed in The Ontario Gazette: May 8, 2004

Amending Reg. 833 of R.R.O. 1990

(Control of Exposure to Biological or Chemical Agents)

1. Section 4 of Regulation 833 of the Revised Regulations of Ontario, 1990 is revoked and the following substituted:

4. Without limiting the generality of section 3, but subject to section 9, every employer shall take the measures prescribed in section 3 to limit the exposure of workers to a biological or chemical agent listed in Part 4 or 11 of the Schedule, in accordance with all of the following rules:

1. If Part 4 or 11 sets out a time-weighted average exposure value (TWAEV) for the agent, exposure shall not exceed that value.

2. If Part 4 or 11 sets out a short-term exposure value (STEV) for the agent, exposure shall not exceed that value.

3. If Part 4 or 11 sets out a ceiling exposure value (CEV) for the agent, exposure shall not exceed that value.

4. If Part 4 or 11 sets out a TWAEV for the agent but neither a STEV nor a CEV, exposure shall not exceed the values calculated under Part 2B of the Schedule.

2. (1) The Schedule to the Regulation is amended by striking out “Agents have been assigned to tables given in Parts 4 through 11 of the Schedule and reference should be made to the Index for the Part in which an agent appears” in the first paragraph under the heading “EXPOSURE VALUES FOR BIOLOGICAL AND CHEMICAL AGENTS IN WORKPLACES” and substituting “Agents have been assigned to tables given in Parts 4, 9, 10 and 11 of the Schedule”.

(2) The Schedule to the Regulation is amended by striking out “Reference should be made to the Index for the cross-referencing of common names in IUPAC names” in the second paragraph under the heading “EXPOSURE VALUES FOR BIOLOGICAL AND CHEMICAL AGENTS IN WORKPLACES”.

3. Part 2B of the Schedule to the Regulation is revoked and the following substituted:

PART 2B
EXCURSION LIMITS WHERE NEITHER A SHORT-TERM EXPOSURE VALUE (STEV) NOR A CEILING EXPOSURE VALUE (CEV) IS INDICATED

1. Where a TWAEV but neither a STEV nor a CEV is set out for a biological or chemical agent listed in Part 4 or 11 of this Schedule, a worker shall not be exposed to a concentration of the biological or chemical agent that exceeds,

(a) three times the TWAEV set out in this Schedule with respect to that agent for any period of 30 minutes; and

(b) five times the TWAEV set out in this Schedule with respect to that agent for any period of time.

4. Part 3 of the Schedule to the Regulation is revoked and the following substituted:

PART 3
EXPLANATORY NOTES ON CHEMICAL NAMES, CAS REG. NOS., AND OTHER NOTATIONS

Parts 4, 9, 10 and 11 of this Schedule deal with biological and chemical agents and contain names of the agents, Chemical Abstracts Service Registry Numbers, and some notations.

Chemical Names

The chemical names used in this Schedule conform with nomenclature rules of the International Union of Pure and Applied Chemistry or with common usage.

Numerals and prefixes (e.g.: o-, p-, n-, O-, N-, sec-, tert-) are disregarded when listing the main entries in alphabetical order, but are used to assign the order when main entry names are identical. For example, “N-methylaniline” is listed under “m”, and “sec-butyl acetate” precedes “tert-butyl acetate”.

Chemical Abstracts Service Registry Number

The Chemical Abstracts Service Registry Number (CAS Reg. No.) is a unique numerical identifier assigned to a chemical substance in the CAS registry system by the Chemical Abstracts Service (P.O. Box 3012, Columbus, Ohio, 43210). The CAS Reg. No. itself has no chemical or structural significance; it is merely a computer-verifiable number assigned in sequential order to each agent as it is entered in the CAS registry system. Some of the CAS Reg. Nos. listed in this guide were assigned by the CAS under contract for the United States Environmental Protection Agency (U.S. EPA). CAS Reg. Nos. have been used as chemical or biological identifiers in inventories and computer literature-retrieval systems.

The CAS Reg. No. has the format (xxxxxx-xx-x) and consists of up to 9 digits, separated by hyphens into 3 groups: (a) the first group has up to 6 digits; (b) the second always contains 2 digits; and (c) the third contains 1 digit.

Notations

The notation “inhalable” following the name of an agent in this Schedule means that size fraction of the airborne particulate deposited anywhere in the respiratory tract and collected during air sampling with a particle size-selective device that,

(a) meets the American Conference of Governmental Industrial Hygienists (ACGIH) particle size-selective criteria; and

(b) has the cut point of 100 microns at 50 per cent collective efficiency.

The notation “respirable” following the name of an agent in this Schedule means that size fraction of the airborne particulate deposited in the gas-exchange region of the respiratory tract and collected during air sampling with a particle size-selective device that,

(a) meets the American Conference of Governmental Industrial Hygienists (ACGIH) particle size-selective criteria; and

(b) has the cut point of 4 microns at 50 per cent collective efficiency.

The notation “skin” following the name of an agent in this Schedule indicates that direct or airborne contact with the agents may result in significant absorption of the agent through the skin, mucous membranes or eyes. Vehicles, such as certain solvents, may enhance the rate of skin absorption. Inclusion of this notation is intended to suggest that preventative action should be taken against absorption of the agent through the skin, mucous membranes or eyes.

(As...) — In the lists of biological and chemical agents, the notation “(as...)”, e.g.: “nickel carbonyl (as nickel)”, is used to indicate that the agent is to be analyzed for the substance indicated in parentheses, nickel in this example, rather than nickel carbonyl.

5. (1) Part 4 of the Schedule to the Regulation is revoked and the following substituted:

PART 4
TIME-WEIGHTED AVERAGE EXPOSURE VALUES (TWAEV), SHORT-TERM EXPOSURE VALUES (STEV) AND CEILING EXPOSURE VALUES (CEV)

 

AGENT

TWAEV

STEV

CEV

(CAS Reg. no)

ppm

mg/m3

ppm

mg/m3

ppm

mg/m3

Acetaldehyde

 

 

 

 

 

 

(75-07-0)

 

 

 

 

25

 

Acetic acid

 

 

 

 

 

 

(64-19-7)

10

25

15

37

 

 

Acetic anhydride

 

 

 

 

 

 

(108-24-7)

 

 

 

 

5

21

Acetone

 

 

 

 

 

 

(67-64-1)

500

 

750

 

 

 

Acetone cyanohydrin

 

 

 

 

 

 

(75-86-5), as CN — Skin

 

 

 

 

4.7

 

Acetonitrile

 

 

 

 

 

 

(75-05-8) — Skin

40

67

60

100

 

 

Acetophenone

 

 

 

 

 

 

(98-86-2)

10

 

 

 

 

 

2-(Acetyloxy) benzoic acid

 

 

 

 

 

 

(50-78-2)

 

5

 

 

 

 

Acrolein

 

 

 

 

 

 

(107-02-8)

 

 

 

 

0.1

 

Acrylamide

 

 

 

 

 

 

(79-06-1) — Skin

 

0.03

 

 

 

 

Acrylic acid

 

 

 

 

 

 

(79-10-7)

2

 

 

 

 

 

Adipic acid

 

 

 

 

 

 

(124-04-9)

 

5

 

 

 

 

Adiponitrile

 

 

 

 

 

 

(111-69-3) — Skin

2

 

 

 

 

 

Aldrin

 

 

 

 

 

 

(309-00-2) — Skin

 

0.25

 

 

 

 

Allyl alcohol

 

 

 

 

 

 

(107-18-6) — Skin

0.5

 

 

 

 

 

Allyl chloride

 

 

 

 

 

 

(107-05-1)

1

3

2

6

 

 

Allyl propyl disulfide

 

 

 

 

 

 

(2179-59-1)

2

12

3

18

 

 

alpha-Alumina (total dust)

 

 

 

 

 

 

(1344-28-1)

 

10

 

 

 

 

Aluminum-powder

 

 

 

 

 

 

(7429-90-5)

 

5

 

 

 

 

Aluminum, alkyl derivatives of

 

 

 

 

 

 

(7429-90-5)

 

2

 

 

 

 

Aluminum, metal and oxide dust

 

 

 

 

 

 

(7429-90-5)

 

10

 

 

 

 

Aluminum, water-soluble compounds of

 

 

 

 

 

 

(7429-90-5)

 

2

 

 

 

 

2-Aminoethanol

 

 

 

 

 

 

(141-43-5)

3

7.5

6

15

 

 

2-Aminopyridine

 

 

 

 

 

 

(504-29-0)

0.5

2

 

 

 

 

3-Amino-1 H-1,2,4-triazole

 

 

 

 

 

 

(61-82-5)

 

0.2

 

 

 

 

4-Amino-3,5,6-trichloro-2-pyridinecarboxylic acid

 

 

 

 

 

 

(1918-02-1)

 

10

 

20

 

 

Ammonia

 

 

 

 

 

 

(7664-41-7)

25

17

35

24

 

 

Ammonium chloride fume

 

 

 

 

 

 

(12125-02-9)

 

10

 

20

 

 

Ammonium perfluoro-octanoate

 

 

 

 

 

 

(3825-26-1)

 

0.01

 

 

 

 

Ammonium sulfamate

 

 

 

 

 

 

(7773-06-0)

 

10

 

 

 

 

n-Amyl acetate

 

 

 

 

 

 

(628-63-7)

100

530

 

 

 

 

sec-Amyl acetate

 

 

 

 

 

 

(53496-15-4)

125

660

 

 

 

 

tert-Amyl methyl ether

 

 

 

 

 

 

(994-05-8)

250

1,045

310

1,295

 

 

Aniline and homologues

 

 

 

 

 

 

(62-53-3) — Skin

2

8

 

 

 

 

Anisidine (sum of o-, and p-isomers)

 

 

 

 

 

 

(29191-52-4) — Skin

0.1

0.5

 

 

 

 

Antimony and its compounds, including antimony trioxide handling and use, but excluding stibine (as antimony)

 

 

 

 

 

 

(7440-36-0)

 

0.5

 

 

 

 

Antimony hydride

 

 

 

 

 

 

(7803-52-3)

0.1

0.5

 

 

 

 

Arsine

 

 

 

 

 

 

(7784-42-1)

0.05

0.16

 

 

 

 

Asphalt fumes

 

 

 

 

 

 

(8052-42-4)

 

5

 

 

 

 

Atrazine

 

 

 

 

 

 

(1912-24-9)

 

5

 

 

 

 

Azinphos-methyl

 

 

 

 

 

 

(86-50-0) — Skin

 

0.2

 

 

 

 

Barium carbonate, chloride, nitrate, or oxide (as barium)

 

 

 

 

 

 

(7440-39-3)

 

0.5

 

 

 

 

Barium sulfate (total dust)

 

 

 

 

 

 

(7727-43-7)

 

10

 

 

 

 

Benomyl

 

 

 

 

 

 

(17804-35-2)

0.8

9

 

 

 

 

Benzaldehyde

 

 

 

 

 

 

(100-52-7)

 

 

4

17

 

 

1,2-Benzenedicarboxylic acid bis(2-ethylhexyl) ester

 

 

 

 

 

 

(117-81-7)

 

3

 

5

 

 

Benzenethiol

 

 

 

 

 

 

(108-98-5)

0.5

2.2

 

 

 

 

Benzotrichloride

 

 

 

 

 

 

(98-07-7) — Skin

 

 

 

 

0.1

 

Benzoyl chloride

 

 

 

 

 

 

(98-88-4)

 

 

 

 

0.5

 

Benzoyl peroxide

 

 

 

 

 

 

(94-36-0)

 

5

 

 

 

 

Benzyl acetate

 

 

 

 

 

 

(140-11-4)

10

 

 

 

 

 

Benzyl chloride

 

 

 

 

 

 

(100-44-7)

1

5

 

 

 

 

Beryllium and its compounds (as beryllium)

 

 

 

 

 

 

(7440-41-7)

 

0.002

 

0.01

 

 

Biphenyl

 

 

 

 

 

 

(92-52-4)

0.2

1.3

 

 

 

 

Bis(eta-cyclopentadienyl)iron

 

 

 

 

 

 

(102-54-5)

 

10

 

 

 

 

2,6-Bis(1,1-dimethylethyl)-4-methylphenol

 

 

 

 

 

 

(128-37-0)

 

10

 

 

 

 

Bis(2-(dimethylaminoethyl)) ether

 

 

 

 

 

 

(3033-62-3)

5

33

 

 

 

 

Bis(dimethylthiocarbonyl) disulfide

 

 

 

 

 

 

(137-26-8)

 

1

 

 

 

 

Bismuth telluride

 

 

 

 

 

 

(1304-82-1)

 

10

 

 

 

 

Bismuth telluride, selenium-doped

 

 

 

 

 

 

(1304-82-1)

 

5

 

 

 

 

Borates, tetra, sodium salts

 

 

 

 

 

 

(1303-96-4)

 

 

 

 

 

 

- Anhydrous

 

1

 

 

 

 

- Decahydrate

 

5

 

 

 

 

- Pentahydrate

 

1

 

 

 

 

Boron oxide

 

 

 

 

 

 

(1303-86-2)

 

10

 

 

 

 

Boron tribromide

 

 

 

 

 

 

(10294-33-4)

 

 

 

 

1

10

Boron trifluoride

 

 

 

 

 

 

(7637-07-2)

 

 

 

 

1

2.8

Bromacil

 

 

 

 

 

 

(314-40-9)

 

10

 

 

 

 

Bromine

 

 

 

 

 

 

(7726-95-6)

0.1

 

0.2

 

 

 

Bromine pentafluoride

 

 

 

 

 

 

(7789-30-2)

0.1

0.7

 

 

 

 

Bromochloromethane

 

 

 

 

 

 

(74-97-5)

200

1,060

250

1,320

 

 

Bromoform

 

 

 

 

 

 

(75-25-2) — Skin

0.5

5

 

 

 

 

Bromotrifluoromethane

 

 

 

 

 

 

(75-63-8)

1,000

6,085

 

 

 

 

1,3-Butadiene

 

 

 

 

 

 

(106-99-0)

5

 

 

 

 

 

Butane

 

 

 

 

 

 

(106-97-8)

800

1,900

 

 

 

 

1-Butanethiol

 

 

 

 

 

 

(109-79-5)

0.5

1.8

 

 

 

 

2-Butanone

 

 

 

 

 

 

(78-93-3)

200

590

300

885

 

 

2-Butoxyethanol

 

 

 

 

 

 

(111-76-2) — Skin

20

 

 

 

 

 

2-Butoxyethyl acetate

 

 

 

 

 

 

(112-07-02) — Skin

25

164

75

492

 

 

(Butoxymethyl) oxirane

 

 

 

 

 

 

(2426-08-6)

25

133

 

 

 

 

n-Butyl acetate

 

 

 

 

 

 

(123-86-4)

150

710

200

950

 

 

sec-Butyl acetate

 

 

 

 

 

 

(105-46-4)

200

950

 

 

 

 

tert-Butyl acetate

 

 

 

 

 

 

(540-88-5)

200

950

 

 

 

 

n-Butyl acrylate

 

 

 

 

 

 

(141-32-2)

2

 

 

 

 

 

n-Butyl alcohol

 

 

 

 

 

 

(71-36-3) — Skin

 

 

 

 

50

150

sec-Butyl alcohol

 

 

 

 

 

 

(78-92-2)

100

303

150

454

 

 

tert-Butyl alcohol

 

 

 

 

 

 

(75-65-0)

100

303

150

454

 

 

n-Butyl lactate

 

 

 

 

 

 

(138-22-7)

5

30

 

 

 

 

n-Butylamine

 

 

 

 

 

 

(109-73-9) — Skin

 

 

 

 

5

15

o-sec-Butylphenol

 

 

 

 

 

 

(89-72-5) — Skin

5

31

 

 

 

 

p-tert-Butyltoluene

 

 

 

 

 

 

(98-51-1)

1

 

 

 

 

 

tert-Butyl chromate, (as chromate)

 

 

 

 

 

 

(1189-85-1) — Skin

 

 

 

 

 

0.1

Cadmium, elemental

 

 

 

 

 

 

(7440-43-9), and compounds, as Cd

 

0.01

 

 

 

 

Cadmium, elemental

 

 

 

 

 

 

(7440-43-9), and compounds, as Cd, respirable

 

0.002

 

 

 

 

Calcium carbonate, including marble (total dust)

 

 

 

 

 

 

(471-34-1)

 

10

 

 

 

 

Calcium chloride

 

 

 

 

 

 

(10043-52-4)

 

5

 

 

 

 

Calcium chromate

 

 

 

 

 

 

(13765-19-0), as Cr

 

0.001

 

 

 

 

Calcium cyanamide

 

 

 

 

 

 

(156-62-7)

 

0.5

 

 

 

 

Calcium hydroxide

 

 

 

 

 

 

(1305-62-0)

 

5

 

 

 

 

Calcium oxide

 

 

 

 

 

 

(1305-78-8)

 

2

 

 

 

 

Calcium silicate (total dust)

 

 

 

 

 

 

(1344-95-2)

 

10

 

 

 

 

Calcium sulfate, including plaster of Paris (total dust)

 

 

 

 

 

 

(10101-41-4)

 

10

 

 

 

 

Camphor

 

 

 

 

 

 

(76-22-2)

2

12

3

19

 

 

Caprolactam, vapour and aerosol

 

 

 

 

 

 

(105-60-2)

0.25

1

 

 

 

 

Captafol

 

 

 

 

 

 

(2425-06-1) — Skin

 

0.1

 

 

 

 

Captan

 

 

 

 

 

 

(133-06-2)

 

5

 

 

 

 

Carbofuran

 

 

 

 

 

 

(1563-66-2)

 

0.1

 

 

 

 

Carbon black

 

 

 

 

 

 

(1333-86-4)

 

3.5

 

 

 

 

Carbon dioxide

 

 

 

 

 

 

(124-38-9)

5,000

9,000

30,000

54,000

 

 

Carbon disulfide

 

 

 

 

 

 

(75-15-0) — Skin

10

31

 

 

 

 

Carbon monoxide

 

 

 

 

 

 

(630-08-0)

35

40

400

460

 

 

Carbon tetrabromide

 

 

 

 

 

 

(558-13-4)

0.1

1.4

0.3

4.1

 

 

Carbon tetrachloride

 

 

 

 

 

 

(56-23-5) — Skin

2

13

3

19

 

 

Carbonyl chloride

 

 

 

 

 

 

(75-44-5)

0.1

0.4

 

 

 

 

Carbonyl fluoride

 

 

 

 

 

 

(353-50-4)

2

5.4

5

13

 

 

Cellulose (paper fibre, total dust)

 

 

 

 

 

 

(9004-34-6)

 

10

 

 

 

 

Cesium hydroxide

 

 

 

 

 

 

(21351-79-1)

 

2

 

 

 

 

Charcoal, except activated

 

 

 

 

 

 

(16291-96-6)

 

10

 

 

 

 

Chloroacetaldehyde

 

 

 

 

 

 

(107-20-0)

 

 

 

 

1

3

Chlordane

 

 

 

 

 

 

(57-74-9) — Skin

 

0.5

 

2

 

 

Chlorinated diphenyl oxides

 

 

 

 

 

 

(55720-99-5)

 

0.5

 

2

 

 

Chlorine

 

 

 

 

 

 

(7782-50-5)

0.5

 

1

 

 

 

Chlorine dioxide

 

 

 

 

 

 

(10049-04-4)

0.1

0.3

0.3

0.9

 

 

Chlorine trifluoride

 

 

 

 

 

 

(7790-91-2)

 

 

 

 

0.1

0.4

Chloroacetone

 

 

 

 

 

 

(78-95-5)

 

 

 

 

1

 

Chloroacetyl chloride

 

 

 

 

 

 

(79-04-9)

0.05

 

0.15

 

 

 

Chlorobenzene

 

 

 

 

 

 

(108-90-7)

10

 

 

 

 

 

o-Chlorobenzaldehyde

 

 

 

 

 

 

(89-98-5)

 

 

4

23

 

 

o-Chlorobenzylidene malononitrile

 

 

 

 

 

 

(2698-41-1) — Skin

 

 

 

 

0.05

0.4

2-Chloro-1,3-butadiene

 

 

 

 

 

 

(126-99-8) — Skin

10

36

 

 

 

 

Chlorodifluoromethane

 

 

 

 

 

 

(75-45-6)

1,000

3,535

1,250

4,415

 

 

1-Chloro-2,3-epoxypropane

 

 

 

 

 

 

(106-89-8) — Skin

0.5

 

 

 

 

 

2-Chloroethanol

 

 

 

 

 

 

(107-07-3) — Skin

 

 

 

 

1

3.3

p-Chloronitrobenzene

 

 

 

 

 

 

(100-00-5)

0.1

0.6

 

 

 

 

1-Chloro-1-nitropropane

 

 

 

 

 

 

(600-25-9)

2

10

 

 

 

 

Chloropentafluoroethane

 

 

 

 

 

 

(76-15-3)

1,000

6,315

 

 

 

 

2-Chloro-1-phenylethanone

 

 

 

 

 

 

(532-27-4)

0.05

0.32

 

 

 

 

2-Chloropropionic acid

 

 

 

 

 

 

(598-78-7) — Skin

0.1

 

 

 

 

 

o-Chlorostyrene

 

 

 

 

 

 

(2039-87-4)

50

283

75

425

 

 

o-Chlorotoluene

 

 

 

 

 

 

(95-49-8)

50

260

75

388

 

 

2-Chloro-6-(trichloro-methyl)pyridine

 

 

 

 

 

 

(1929-82-4)

 

10

 

20

 

 

Chlorpyrifos

 

 

 

 

 

 

(2921-88-2) — Skin

 

0.2

 

0.6

 

 

Chromates, dichromates and other hexavalent chromium compounds (as chromium)

 

 

 

 

 

 

(7440-47-3)

 

0.05

 

 

 

 

Chromium

 

 

 

 

 

 

(7440-47-3), insoluble Cr VI compounds, as Cr

 

0.01

 

 

 

 

Chromium metal, and divalent and trivalent chromium compounds (as chromium)

 

 

 

 

 

 

(7440-47-3)

 

0.5

 

 

 

 

Chromyl chloride

 

 

 

 

 

 

(14977-61-8)

0.025

0.16

 

 

 

 

Clopidol

 

 

 

 

 

 

(2971-90-6)

 

10

 

20

 

 

Coal dust, Anthracite (respirable)

 

0.4

 

 

 

 

Coal dust, Bituminous (respirable)

 

0.9

 

 

 

 

Coal tar pitch volatiles (as total benzene-soluble compounds)

 

 

 

 

 

 

(65996-93-2)

 

0.2

 

 

 

 

Cobalt carbonyl and hydrocarbonyl (as cobalt)

 

 

 

 

 

 

(7440-48-4)

 

0.1

 

 

 

 

Cobalt metal, dust and fume (as cobalt)

 

 

 

 

 

 

(7440-48-4)

 

0.02

 

 

 

 

N-Coco morpholine

 

 

 

 

 

 

(1541-81-7) — Skin

5

52

 

 

 

 

Copper fume (as copper)

 

 

 

 

 

 

(7440-50-8)

 

0.2

 

 

 

 

Copper dust and mists (as copper)

 

 

 

 

 

 

(7440-50-8)

 

1

 

 

 

 

Cotton dust, fabric knitting

 

0.5

 

 

 

 

Cotton dust, raw

 

0.2(F)

 

 

 

 

Cotton dust, slashing and weaving

 

0.75(F)

 

 

 

 

Cotton dust, waste

 

0.5(F)

 

 

 

 

‘Coumin 100’ Polymer Flakes (total dust)

 

 

 

 

 

 

(63393-89-5)

 

5

 

 

 

 

Cresol (sum of o-, m-, and p-isomers)

 

 

 

 

 

 

(1319-77-3) — Skin

5

22

 

 

 

 

Crotonaldehyde

 

 

 

 

 

 

(4170-30-3)

 

 

 

 

0.3

 

Crufomate

 

 

 

 

 

 

(299-86-5)

 

5

 

20

 

 

Cumene

 

 

 

 

 

 

(98-82-8) — Skin

50

245

 

 

 

 

Cyanamide

 

 

 

 

 

 

(420-04-2)

 

2

 

 

 

 

Cyanogen

 

 

 

 

 

 

(460-19-5)

10

21

 

 

 

 

Cyanogen chloride

 

 

 

 

 

 

(506-77-4)

 

 

 

 

0.3

0.75

Cyclohexane

 

 

 

 

 

 

(110-82-7)

300

1,030

 

 

 

 

Cyclohexanol

 

 

 

 

 

 

(108-93-0) — Skin

50

200

 

 

 

 

Cyclohexanone

 

 

 

 

 

 

(108-94-1) — Skin

25

100

 

 

 

 

Cyclohexene

 

 

 

 

 

 

(110-83-8)

300

1,010

 

 

 

 

Cyclohexylamine

 

 

 

 

 

 

(108-91-8)

10

40

 

 

 

 

Cyclopentadiene

 

 

 

 

 

 

(542-92-7)

75

200

 

 

 

 

Cyclopentane

 

 

 

 

 

 

(287-92-3)

600

1,720

 

 

 

 

Cyhexatin

 

 

 

 

 

 

(13121-70-5)

 

5

 

 

 

 

Cymene (sum of o-,m- and p-isomers)

 

 

 

 

 

 

(25155-15-1) — Skin

50

274

 

 

 

 

Decaborane

 

 

 

 

 

 

(17702-41-9) — Skin

0.05

0.25

0.15

0.75

 

 

Demeton

 

 

 

 

 

 

(8065-48-3) — Skin

0.01

0.11

 

 

 

 

1,2-Diaminoethane

 

 

 

 

 

 

(107-15-3)

10

25

 

 

 

 

Diatomaceous earth, (uncalcined) inhalable

 

 

 

 

 

 

(61790-53-2)

 

10(D)

 

 

 

 

Diatomaceous earth (uncalcined) respirable

 

 

 

 

 

 

(61790-53-2)

 

3(D)

 

 

 

 

Diazomethane

 

 

 

 

 

 

(334-88-3)

0.2

0.34

 

 

 

 

Diborane

 

 

 

 

 

 

(19287-45-7)

0.1

0.11

 

 

 

 

Dibromodifluoromethane

 

 

 

 

 

 

(75-61-6)

100

860

 

 

 

 

2-(Dibutylamino) ethanol

 

 

 

 

 

 

(102-81-8) — Skin

0.5

 

 

 

 

 

Dibutyl phenyl phosphate

 

 

 

 

 

 

(2528-36-1) — Skin

0.3

 

 

 

 

 

Dibutyl phosphate

 

 

 

 

 

 

(107-66-4)

1

8.6

2

17

 

 

Dibutyl phthalate

 

 

 

 

 

 

(84-74-2)

 

5

 

 

 

 

o-Dichlorobenzene

 

 

 

 

 

 

(95-50-1)

25

 

50

 

 

 

p-Dichlorobenzene

 

 

 

 

 

 

(106-46-7)

10

 

 

 

 

 

Dichlorodifluoromethane

 

 

 

 

 

 

(75-71-8)

1,000

4,940

 

 

 

 

1,4-Dichloro-2-butene

 

 

 

 

 

 

(764-41-0) — Skin

0.005

 

 

 

 

 

1,3-Dichloro-5,5-dimethyl-hydantoin

 

 

 

 

 

 

(118-52-5)

 

0.2

 

0.4

 

 

1, 3-Dichloro-2-Propanol

 

 

 

 

 

 

(96-23-1) — Skin

 

 

1

5

 

 

1,1-Dichloroethane

 

 

 

 

 

 

(75-34-3)

100

 

 

 

 

 

1,2-Dichloroethane

 

 

 

 

 

 

(107-06-2)

10

40

 

 

 

 

1,1-Dichloroethene

 

 

 

 

 

 

(75-35-4)

1

4

20

80

 

 

1,2-Dichloroethene

 

 

 

 

 

 

(540-59-0)

200

790

250

990

 

 

Dichloroethyne

 

 

 

 

 

 

(7572-29-4)

 

 

 

 

0.1

0.4

Dichlorofluoromethane

 

 

 

 

 

 

(75-43-4)

10

42

 

 

 

 

Dichloromethane

 

 

 

 

 

 

(75-09-2)

50

175

 

 

 

 

1,1-Dichloro-1-nitroethane

 

 

 

 

 

 

(594-72-9)

2

12

 

 

 

 

(2,4-Dichlorophenoxy) acetic acid and its esters (as 2,4-D)

 

 

 

 

 

 

(94-75-7)

 

10

 

 

 

 

2-(2,4-Dichlorophenoxy) ethanol hydrogen sulfate sodium salt

 

 

 

 

 

 

(136-78-7)

 

10

 

 

 

 

1,2-Dichloropropane

 

 

 

 

 

 

(78-87-5)

75

350

110

510

 

 

1,3-Dichloropropene

 

 

 

 

 

 

(542-75-6) — Skin

1

5

 

 

 

 

2,2-Dichloropropionic acid

 

 

 

 

 

 

(75-99-0)

1

6

 

 

 

 

1,2-Dichloro-1,1,2,2-tetra-fluoroethane

 

 

 

 

 

 

(76-14-2)

1,000

6,985

 

 

 

 

Dichlorvos

 

 

 

 

 

 

(62-73-7) — Skin

0.1

0.9

 

 

 

 

Dicrotophos

 

 

 

 

 

 

(141-66-2) — Skin

 

0.25

 

 

 

 

Dicyclopentadiene

 

 

 

 

 

 

(77-73-6)

5

27

 

 

 

 

Dieldrin

 

 

 

 

 

 

(60-57-1) — Skin

 

0.25

 

 

 

 

Diethanolamine

 

 

 

 

 

 

(111-42-2)

 

2

 

 

 

 

Diethylamine

 

 

 

 

 

 

(109-89-7)

5

 

15

 

 

 

2-Diethylaminoethanol

 

 

 

 

 

 

(100-37-8) — Skin

2

 

 

 

 

 

Diethylene glycol monoethyl ether

 

 

 

 

 

 

(111-90-0)

30

165

 

 

 

 

Diethylenetriamine

 

 

 

 

 

 

(111-40-0) — Skin

1

4

 

 

 

 

Diethyl phthalate

 

 

 

 

 

 

(84-66-2)

 

5

 

 

 

 

1,2-Dihydroxybenzene

 

 

 

 

 

 

(120-80-9)

5

22

 

 

 

 

1,4-Dihydroxybenzene

 

 

 

 

 

 

(123-31-9)

 

2

 

 

 

 

Diisodecyl phthalate

 

 

 

 

 

 

(26761-40-0)

 

5

 

 

 

 

Diisopropylamine

 

 

 

 

 

 

(108-18-9) — Skin

5

20

 

 

 

 

Dimethoxymethane

 

 

 

 

 

 

(109-87-5)

1,000

3,110

 

 

 

 

N,N-Dimethylacetamide

 

 

 

 

 

 

(127-19-5) — Skin

10

36

 

 

 

 

Dimethylamine

 

 

 

 

 

 

(124-40-3)

5

 

15

 

 

 

3-(Dimethylamino) propylamine

 

 

 

 

 

 

(111-90-0) — Skin

0.5

2

 

 

 

 

N,N-Dimethylaniline

 

 

 

 

 

 

(121-69-7) — Skin

5

25

10

50

 

 

ar,ar-Dimethylbenzenamine (sum of all isomers)

 

 

 

 

 

 

(1300-73-8) — Skin

0.5

 

 

 

 

 

Dimethylbenzene (sum of o-, m- and p-isomers)

 

 

 

 

 

 

(1330-20-7)

100

435

150

650

 

 

N, N-Dimethyl-cyclohexylamine

 

 

 

 

 

 

(98-94-2)

 

 

5

26

 

 

Dimethylethoxysilane

 

 

 

 

 

 

(14857-34-2)

0.5

 

1.5

 

 

 

N, N-Dimethyl-ethanolamine

 

 

 

 

 

 

(108-01-0)

3

11

6

22

 

 

N,N-Dimethylformamide

 

 

 

 

 

 

(68-12-2) — Skin

10

30

 

 

 

 

2,6-Dimethyl-4-heptanone

 

 

 

 

 

 

(108-83-8)

25

145

 

 

 

 

1,1-Dimethylhydrazine

 

 

 

 

 

 

(57-14-7) — Skin

0.01

 

 

 

 

 

2-(2,2-Dimethyl-1-oxopropyl)-H-indene-1,3(2H)-dione

 

 

 

 

 

 

(83-26-1)

 

0.1

 

 

 

 

Dimethyl phthalate

 

 

 

 

 

 

(131-11-3)

 

5

 

 

 

 

Dimethyl sulfate

 

 

 

 

 

 

(77-78-1) — Skin

0.1

0.5

 

 

 

 

Dimethyl terephthalate

 

 

 

 

 

 

(120-61-6)

 

5

 

 

 

 

Dimethyl 2,3,5,6-tetracholorotere-phthalate

 

 

 

 

 

 

(1861-32-1)

 

5

 

 

 

 

Dinitrobenzene (sum of m-, o-, and p-isomers:

 

 

 

 

 

 

(99-65-0), (528-29-0), and (100-25-4)) — Skin

0.15

1.0

 

 

 

 

Dinitro-o-cresol

 

 

 

 

 

 

(534-52-1) — Skin

 

0.2

 

 

 

 

Dinitrotoluene (sum of all isomers)

 

 

 

 

 

 

(25321-14-6) — Skin

 

0.2

 

 

 

 

1,4-Dioxane

 

 

 

 

 

 

(123-91-1) — Skin

20

 

 

 

 

 

Dioxathion

 

 

 

 

 

 

(78-34-2) — Skin

 

0.2

 

 

 

 

N,N-Diphenylamine

 

 

 

 

 

 

(122-39-4)

 

10

 

 

 

 

Dipropylene glycol monomethyl ether

 

 

 

 

 

 

(34590-94-8)

100

605

150

910

 

 

Dipropylene glycol monomethyl ether acetate

 

 

 

 

 

 

(88917-22-0)

100

776

150

1,164

 

 

Diquat

 

 

 

 

 

 

(2764-72-9) — Skin

 

0.5

 

 

 

 

Diquat, respirable

 

 

 

 

 

 

(2764-72-9) — Skin

 

0.1

 

 

 

 

Disulfiram

 

 

 

 

 

 

(97-77-8)

 

2

 

 

 

 

Disulfoton

 

 

 

 

 

 

(298-04-4)

 

0.1

 

 

 

 

Diuron

 

 

 

 

 

 

(330-54-1)

 

10

 

 

 

 

m-Divinylbenzene

 

 

 

 

 

 

(108-57-6)

10

53

 

 

 

 

Emery (total dust)

 

 

 

 

 

 

(1302-74-5)

 

10

 

 

 

 

Endosulfan

 

 

 

 

 

 

(115-29-7) — Skin

 

0.1

 

 

 

 

Endrin

 

 

 

 

 

 

(72-20-8) — Skin

 

0.1

 

 

 

 

Enflurane

 

 

 

 

 

 

(13838-16-9)

2

16

 

 

 

 

1,2-Epoxy-4-(epoxyethyl)-cyclohexane

 

 

 

 

 

 

(106-87-6) — Skin

0.1

 

 

 

 

 

1,2-Epoxypropane

 

 

 

 

 

 

(75-56-9)

20

47

 

 

 

 

2,3-Epoxy-1-propanol

 

 

 

 

 

 

(556-52-5)

2

 

 

 

 

 

Ethanethiol

 

 

 

 

 

 

(75-08-1)

0.5

1.3

 

 

 

 

Ethanol

 

 

 

 

 

 

(64-17-5)

1,000

1,900

 

 

 

 

Ethion

 

 

 

 

 

 

(563-12-2) — Skin

 

0.4

 

 

 

 

Ethoxyethane

 

 

 

 

 

 

(60-29-7)

400

1,210

500

1,515

 

 

2-Ethoxyethanol

 

 

 

 

 

 

(110-80-5) — Skin

5

18

 

 

 

 

2-Ethoxyethyl acetate

 

 

 

 

 

 

(111-15-9) — Skin

5

27

 

 

 

 

Ethyl acetate

 

 

 

 

 

 

(141-78-6)

400

1,440

 

 

 

 

Ethyl acrylate

 

 

 

 

 

 

(140-88-5) — Skin

5

 

15

 

 

 

Ethylamine

 

 

 

 

 

 

(75-04-7)

5

 

15

 

 

 

Ethylbenzene

 

 

 

 

 

 

(100-41-4)

100

435

125

540

 

 

Ethyl bromide

 

 

 

 

 

 

(74-96-4)

5

 

 

 

 

 

Ethyl chloride

 

 

 

 

 

 

(75-00-3)

100

 

 

 

 

 

Ethyl cyanoacrylate

 

 

 

 

 

 

(7085-85-0)

0.2

 

 

 

 

 

Ethyl-3-ethoxy propionate

 

 

 

 

 

 

(763-69-9)

50

300

 

 

 

 

Ethylene glycol

 

 

 

 

 

 

(107-21-1)

 

 

 

 

 

100

Ethylene glycol dimethyl ether

 

 

 

 

 

 

(110-71-4) — Skin

5

18

 

 

 

 

Ethylene glycol dinitrate

 

 

 

 

 

 

(628-96-6) — Skin

0.05

0.31

 

 

 

 

Ethylene glycol mono-n-propyl ether

 

 

 

 

 

 

(2807-30-9) — Skin

25

110

 

 

 

 

Ethylene glycol mononitrate

 

 

 

 

 

 

(16051-48-2) — Skin

0.05

0.22

 

 

 

 

5-Ethylidene-2-norbornene

 

 

 

 

 

 

(16219-75-3)

 

 

 

 

5

25

Ethylenimine

 

 

 

 

 

 

(151-56-4) — Skin

0.5

0.9

 

 

 

 

Ethyl formate

 

 

 

 

 

 

(109-94-4)

100

300

 

 

 

 

Ethyl methacrylate

 

 

 

 

 

 

(97-63-2)

100

470

 

 

 

 

N-Ethylmorpholine

 

 

 

 

 

 

(100-74-3) — Skin

5

23

 

 

 

 

O-Ethyl O-p-nitrophenyl phenylphosphonothioate

 

 

 

 

 

 

(2104-64-5) — Skin

 

0.1

 

 

 

 

Ethyl silicate

 

 

 

 

 

 

(78-10-4)

10

85

 

 

 

 

Fenamiphos

 

 

 

 

 

 

(22224-92-6) — Skin

 

0.1

 

 

 

 

Fensulfothion

 

 

 

 

 

 

(115-90-2)

 

0.1

 

 

 

 

Fenthion

 

 

 

 

 

 

(55-38-9) — Skin

 

0.1

 

 

 

 

Ferbam

 

 

 

 

 

 

(14484-64-1)

 

10

 

 

 

 

Ferrovanadium dust

 

 

 

 

 

 

(12604-58-9)

 

1

 

3

 

 

Fluorides (as fluoride)

 

 

 

 

 

 

(16984-48-8)

 

2.5

 

 

 

 

Fluorine

 

 

 

 

 

 

(7782-41-4)

1

1.6

2

3.1

 

 

Fonofos

 

 

 

 

 

 

(944-22-9) — Skin

 

0.1

 

 

 

 

Forane

 

 

 

 

 

 

(26675-46-7)

2

15

 

 

 

 

Formaldehyde

 

 

 

 

 

 

(50-00-0)

1

1.5

2

3

 

 

Formamide

 

 

 

 

 

 

(75-12-7) — Skin

10

15

 

 

 

 

Formic acid

 

 

 

 

 

 

(64-18-6)

5

 

10

 

 

 

Furfural

 

 

 

 

 

 

(98-01-1) — Skin

2

8

 

 

 

 

Furfuryl alcohol

 

 

 

 

 

 

(98-00-0) — Skin

10

40

15

60

 

 

Gasoline

 

 

 

 

 

 

(8006-61-9)

 

900

 

1,500

 

 

Germanium tetrahydride

 

 

 

 

 

 

(7782-65-2)

0.2

0.63

 

 

 

 

Glycerin mist

 

 

 

 

 

 

(56-81-5)

 

10

 

 

 

 

Glutaraldehyde

 

 

 

 

 

 

(111-30-8), activated and inactivated

 

 

 

 

0.05

 

Grain dust (oats, wheat, barley)

 

4

 

 

 

 

Grain dust, not otherwise classified (total dust)

 

4

 

 

 

 

Graphite (all forms except graphite fibres), respirable

 

 

 

 

 

 

(7782-42-5)

 

2

 

 

 

 

Gypsum (total dust)

 

 

 

 

 

 

(10101-41-4)

 

10

 

 

 

 

Hafnium

 

 

 

 

 

 

(7440-58-6)

 

0.5

 

 

 

 

Halothane

 

 

 

 

 

 

(151-67-7)

2

16

 

 

 

 

Heptachlor

 

 

 

 

 

 

(76-44-8) and Heptachlor epoxide (1024-57-3) — Skin

 

0.05

 

 

 

 

n-Heptane

 

 

 

 

 

 

(142-82-5)

400

1,635

500

2,045

 

 

2-Heptanone

 

 

 

 

 

 

(110-43-0)

25

115

 

 

 

 

3-Heptanone

 

 

 

 

 

 

(106-35-4)

50

 

75

 

 

 

4-Heptanone

 

 

 

 

 

 

(123-19-3)

50

233

 

 

 

 

Heptyl acetate

 

 

 

 

 

 

(90438-79-2)

50

320

 

 

 

 

Hexachlorobenzene

 

 

 

 

 

 

(118-74-1) — Skin

 

0.002

 

 

 

 

Hexachloro-1,3-butadiene

 

 

 

 

 

 

(87-68-3) — Skin

0.02

0.21

 

 

 

 

Hexachlorocyclopentadiene

 

 

 

 

 

 

(77-47-4)

0.01

0.11

 

 

 

 

Hexachloroethane

 

 

 

 

 

 

(67-72-1)

1

 

 

 

 

 

Hexachloronaphthalene

 

 

 

 

 

 

(1335-87-1) — Skin

 

0.2

 

 

 

 

Hexafluoroacetone

 

 

 

 

 

 

(684-16-2) — Skin

0.1

0.7

 

 

 

 

Hexahydro-1,3,5-trinitro-1,3,5-triazine

 

 

 

 

 

 

(121-82-4) — Skin

 

0.5

 

 

 

 

Hexamethylenetetramine (HMT)

 

 

 

 

 

 

(100-97-0)

 

 

0.35

2

 

 

n-Hexane

 

 

 

 

 

 

(110-54-3)

50

176

 

 

 

 

Hexane, other isomers of

500

1,760

1,000

3,520

 

 

1,6-Hexanediamine

 

 

 

 

 

 

(124-09-4)

0.5

 

 

 

 

 

2-Hexanone

 

 

 

 

 

 

(591-78-6)

1

4

 

 

 

 

1-Hexene

 

 

 

 

 

 

(592-41-6)

30

 

 

 

 

 

sec-Hexyl acetate

 

 

 

 

 

 

(142-92-7)

50

294

 

 

 

 

Hexyl acetate (isomeric mixture)

 

 

 

 

 

 

(88230-35-7)

50

294

 

 

 

 

Hexylene glycol

 

 

 

 

 

 

(107-41-5)

 

 

 

 

25

120

Hydrazine

 

 

 

 

 

 

(302-01-2) — Skin

0.01

 

 

 

 

 

Hydrogenated terphenyls1

 

 

 

 

 

 

(61788-32-7)

0.5

 

 

 

 

 

Hydrogen bromide

 

 

 

 

 

 

(10035-10-6)

 

 

 

 

3

10

Hydrogen chloride

 

 

 

 

 

 

(7647-01-0)

 

 

 

 

5

7.4

Hydrogen cyanide and Cyanide salts, as CN

 

 

 

 

 

 

Hydrogen cyanide

 

 

 

 

 

 

(74-90-8) — Skin

 

 

 

 

4.7

 

Calcium cyanide

 

 

 

 

 

 

(592-01-8) — Skin

 

 

 

 

 

5

Potassium cyanide

 

 

 

 

 

 

(151-50-8) — Skin

 

 

 

 

 

5

Sodium cyanide

 

 

 

 

 

 

(143-33-9) — Skin

 

 

 

 

 

5

Hydrogen fluoride (as fluoride)

 

 

 

 

 

 

(7664-39-3)

 

 

 

 

3

2.5

Hydrogen peroxide

 

 

 

 

 

 

(7722-84-1)

1

1.4

 

 

 

 

Hydrogen selenide (as selenium)

 

 

 

 

 

 

(7783-07-5)

0.05

0.16

 

 

 

 

Hydrogen sulfide

 

 

 

 

 

 

(7783-06-4)

10

14

15

21

 

 

4-Hydroxy-4-methyl-2-pentanone

 

 

 

 

 

 

(123-42-2)

50

240

75

360

 

 

2-Hydroxypropyl acrylate

 

 

 

 

 

 

(999-61-1) — Skin

0.5

2.7

 

 

 

 

Indene

 

 

 

 

 

 

(95-13-6)

10

47

 

 

 

 

Indium and its compounds (as indium)

 

 

 

 

 

 

(7440-74-6)

 

0.1

 

 

 

 

Iodine

 

 

 

 

 

 

(7553-56-2)

 

 

 

 

0.1

1

Iodoform

 

 

 

 

 

 

(75-47-8)

0.6

10

 

 

 

 

Iron oxide dust and fumes (Fe2O3), as Fe

 

 

 

 

 

 

(1309-37-1)

 

5

 

 

 

 

Iron pentacarbonyl (as iron)

 

 

 

 

 

 

(13463-40-6)

0.1

0.8

0.2

1.6

 

 

Iron salts, water-soluble (as iron)

 

 

 

 

 

 

(7439-89-6)

 

1

 

 

 

 

Isoamyl acetate

 

 

 

 

 

 

(123-92-2)

100

530

 

 

 

 

Isoamyl alcohol

 

 

 

 

 

 

(123-51-3)

100

360

125

450

 

 

Isobutyl acetate

 

 

 

 

 

 

(110-19-0)

150

710

187

887

 

 

Isobutyl alcohol

 

 

 

 

 

 

(78-83-1)

50

150

 

 

 

 

Isooctyl alcohol

 

 

 

 

 

 

(26952-21-6) — Skin

 

270

 

 

 

 

2-Isopropoxyethanol

 

 

 

 

 

 

(109-59-1)

25

105

 

 

 

 

Isopropyl acetate

 

 

 

 

 

 

(108-21-4)

250

1,040

310

1,295

 

 

Isopropyl alcohol

 

 

 

 

 

 

(67-63-0)

400

980

500

1,225

 

 

Isopropylamine

 

 

 

 

 

 

(75-31-0)

5

12

10

24

 

 

Isopropylaminoethanols

 

 

400

1,900

 

 

N-Isopropylaniline

 

 

 

 

 

 

(768-52-5) — Skin

2

11

 

 

 

 

Isosorbide dinitrate

 

 

 

 

 

 

(87-33-2) — Skin

 

0.2

 

 

 

 

Kaolin (respirable)

 

 

 

 

 

 

(1332-58-7)

 

2(D)

 

 

 

 

Kerosene, straight-run (8008-20-6) and hydrosulfurized

 

 

 

 

 

 

(64742-81-0)

35

250

 

 

 

 

Ketene

 

 

 

 

 

 

(463-51-4)

0.5

0.9

1.5

2.6

 

 

L.P.G. (Liquified petroleum gas)

 

 

 

 

 

 

(68476-85-7)

 

1,800

 

 

 

 

Lead chromate

 

 

 

 

 

 

(7758-97-6), as Cr

 

0.012

 

 

 

 

Limestone (total dust)

 

 

 

 

 

 

(1317-65-3)

 

10(D)

 

 

 

 

Lincomycin

 

 

 

 

 

 

(154-21-2)

 

0.1

 

 

 

 

Lindane

 

 

 

 

 

 

(58-89-9) — Skin

 

0.5

 

 

 

 

Lithium hydride

 

 

 

 

 

 

(7580-67-8)

 

0.025

 

 

 

 

Lithium hydroxide, Anyhydrous

 

 

 

 

 

 

(1310-65-2)

 

 

 

1

 

 

Lithium hydroxide, Monohydrate

 

 

 

 

 

 

(1310-66-3)

 

 

 

1

 

 

Magnesite (total dust)

 

 

 

 

 

 

(546-93-0)

 

10(D)

 

 

 

 

Magnesium oxide fume

 

 

 

 

 

 

(1309-48-4)

 

10

 

 

 

 

Malathion

 

 

 

 

 

 

(121-75-5) — Skin

 

10

 

 

 

 

Maleic anhydride

 

 

 

 

 

 

(108-31-6)

0.25

1

 

 

 

 

Manganese, dust and compounds (as manganese)

 

 

 

 

 

 

(7439-96-5)

 

5

 

 

 

 

Manganese-containing fume (as manganese)

 

 

 

 

 

 

(7439-96-5)

 

1

 

3

 

 

Manganese cyclo-pentadienyltricarbonyl (as manganese)

 

 

 

 

 

 

(12079-65-1) — Skin

 

0.1

 

 

 

 

Manganese tetroxide (as manganese)

 

 

 

 

 

 

(1317-35-7) — Skin

 

1

 

 

 

 

Mesityl oxide

 

 

 

 

 

 

(141-79-7)

15

60

25

100

 

 

Methacrylic acid

 

 

 

 

 

 

(79-41-4)

20

70

 

 

 

 

Methanethiol

 

 

 

 

 

 

(74-93-1)

0.5

1

 

 

 

 

Methanol

 

 

 

 

 

 

(67-56-1) — Skin

200

260

250

325

 

 

Methomyl

 

 

 

 

 

 

(16752-77-5)

 

2.5

 

 

 

 

Methoxychlor

 

 

 

 

 

 

(72-43-5)

 

10

 

 

 

 

2-Methoxyethanol

 

 

 

 

 

 

(109-86-4) — Skin

5

16

 

 

 

 

2-Methoxyethyl acetate

 

 

 

 

 

 

(110-49-6) — Skin

5

24

 

 

 

 

Methoxyflurane

 

 

 

 

 

 

(76-38-0)

2

13

 

 

 

 

4-Methoxyphenol

 

 

 

 

 

 

(150-76-5)

 

5

 

 

 

 

1-Methoxy-2-propanol

 

 

 

 

 

 

(107-98-2)

100

365

150

550

 

 

Methyl acetate

 

 

 

 

 

 

(79-20-9)

200

605

250

755

 

 

Methyl acetylene-propadiene mixture

 

 

 

 

 

 

(MAPP)

1,000

 

1,250

 

 

 

Methyl acrylate

 

 

 

 

 

 

(96-33-3) — Skin

2

 

 

 

 

 

Methylamine

 

 

 

 

 

 

(74-89-5)

5

 

15

 

 

 

N-Methylbenzenamine

 

 

 

 

 

 

(100-61-8) — Skin

0.5

2.2

 

 

 

 

Methylbenzene

 

 

 

 

 

 

(108-88-3)

50

 

 

 

 

 

Methyl bromide

 

 

 

 

 

 

(74-83-9) — Skin

1

 

 

 

 

 

3-Methyl-2-butanone

 

 

 

 

 

 

(563-80-4)

200

705

 

 

 

 

Methyl chloride

 

 

 

 

 

 

(74-87-3)

50

103

100

205

 

 

Methyl 2-cyanoacrylate

 

 

 

 

 

 

(137-05-3)

0.2

 

 

 

 

 

Methylcyclohexane

 

 

 

 

 

 

(108-87-2)

400

1,600

 

 

 

 

2-Methylcyclohexanol

 

 

 

 

 

 

(583-59-5)

50

233

 

 

 

 

2-Methylcyclohexanone

 

 

 

 

 

 

(583-60-8) — Skin

50

230

75

345

 

 

2-Methylcyclopentadienyl-manganese tricarbonyl (as manganese)

 

 

 

 

 

 

(12108-13-3) — Skin

 

0.2

 

 

 

 

Methyl demeton

 

 

 

 

 

 

(8022-00-2) — Skin

 

0.5

 

 

 

 

2-Methyl-3,5-dinitrobenzamide

 

 

 

 

 

 

(148-01-6)

 

5

 

10

 

 

Methylene bis (4-cyclohexyl isocyanate)

 

 

 

 

 

 

(5124-30-1)

0.005

 

 

 

 

 

4,4´-Methylene bis (2-chloroaniline)

 

 

 

 

 

 

(101-14-4) — Skin

0.0005

0.005

 

 

 

 

4,4´-Methylene-dianiline

 

 

 

 

 

 

(101-77-9) — Skin

 

0.04

 

 

 

 

((1-Methylethoxy)methyl)-oxirane

 

 

 

 

 

 

(4016-14-2)

50

237

75

356

 

 

Methyl ethyl ketone peroxides

 

 

 

 

0.2

1.5

Methyl formate

 

 

 

 

 

 

(107-31-3)

100

245

150

370

 

 

5-Methyl-3-heptanone

 

 

 

 

 

 

(541-85-5)

25

130

 

 

 

 

5-Methyl-2-hexanone

 

 

 

 

 

 

(110-12-3)

50

233

 

 

 

 

Methylhydrazine

 

 

 

 

 

 

(60-34-4) — Skin

0.01

 

 

 

 

 

Methyl iodide

 

 

 

 

 

 

(74-88-4) — Skin

2

12

 

 

 

 

Methyl methacrylate

 

 

 

 

 

 

(80-62-6)

100

410

 

 

 

 

Methyl parathion

 

 

 

 

 

 

(298-00-0) — Skin

 

0.2

 

 

 

 

4-Methyl-2-pentanol

 

 

 

 

 

 

(108-11-2) — Skin

25

104

40

167

 

 

4-Methyl-2-pentanone

 

 

 

 

 

 

(108-10-1)

50

205

75

 

 

 

2-Methyl-2-propenenitrile

 

 

 

 

 

 

(126-98-7) — Skin

1

2.7

 

 

 

 

N-Methyl-2-pyrrolidone

 

 

 

 

 

 

(872-50-4)

 

400

 

 

 

 

alpha-Methylstyrene

 

 

 

 

 

 

(98-83-9)

50

241

100

482

 

 

Methyl tert-butyl ether (MTBE)

 

 

 

 

 

 

(1634-04-4)

40

 

 

 

 

 

1-Methyl-2,4,6-trinitrobenzene

 

 

 

 

 

 

(118-96-7) — Skin

0.01

0.1

0.02

0.2

 

 

Methyl vinyl ketone

 

 

 

 

 

 

(78-94-4) — Skin

 

 

 

 

0.2

 

Metribuzin

 

 

 

 

 

 

(21087-64-9)

 

5

 

 

 

 

Mevinphos

 

 

 

 

 

 

(7786-34-7) — Skin

0.01

0.1

0.03

0.3

 

 

Mica, respirable

 

 

 

 

 

 

(12001-26-2)

 

3(D)

 

 

 

 

Mineral Spirits

 

525

 

 

 

 

Molybdenum metal, dioxide and disulfide (as molybdenum)

 

 

 

 

 

 

(7439-98-7)

 

10

 

 

 

 

Molybdenum trioxide and molybdates (as molybdenum)

 

 

 

 

 

 

(7439-98-7)

 

5

 

 

 

 

Monocrotophos

 

 

 

 

 

 

(6923-22-4)

 

0.25

 

 

 

 

Morpholine

 

 

 

 

 

 

(110-91-8) — Skin

20

70

30

105

 

 

Naled

 

 

 

 

 

 

(300-76-5) — Skin

 

3

 

 

 

 

Naphthalene

 

 

 

 

 

 

(91-20-3)

10

52

15

78

 

 

1-Naphthyl N-methyl-carbamate

 

 

 

 

 

 

(63-25-2)

 

5

 

 

 

 

alpha-Naphthylthiourea

 

 

 

 

 

 

(86-88-4)

 

0.3

 

 

 

 

Nepheline syenite (total dust)

 

 

 

 

 

 

(37244-96-5)

 

10

 

 

 

 

Nickel carbonyl (as nickel)

 

 

 

 

 

 

(13463-39-3)

0.05

0.35

 

 

 

 

Nickel, elemental/metal

 

 

 

 

 

 

(7440-02-0), inhalable

 

1

 

 

 

 

Nickel, insoluble compounds, as Ni, inhalable

 

 

 

 

 

 

(7440-02-0)

 

0.2

 

 

 

 

Nickel, soluble compounds, as Ni, inhalable

 

 

 

 

 

 

(7440-02-0)

 

0.1

 

 

 

 

Nickel subsulfide, inhalable

 

 

 

 

 

 

(12035-72-2), as Ni

 

0.1

 

 

 

 

Nicotine

 

 

 

 

 

 

(54-11-5) — Skin

 

0.5

 

 

 

 

Nitramine

 

 

 

 

 

 

(479-45-8) — Skin

 

1.5

 

 

 

 

Nitric acid

 

 

 

 

 

 

(7697-37-2)

2

5

4

10

 

 

Nitric oxide

 

 

 

 

 

 

(10102-43-9)

25

31

 

 

 

 

p-Nitroaniline

 

 

 

 

 

 

(100-01-6) — Skin

 

3

 

 

 

 

Nitrobenzene

 

 

 

 

 

 

(98-95-3) — Skin

1

5

 

 

 

 

Nitroethane

 

 

 

 

 

 

(79-24-3)

100

306

 

 

 

 

Nitrogen dioxide

 

 

 

 

 

 

(10102-44-0)

3

5.6

5

9.4

 

 

Nitrogen trifluoride

 

 

 

 

 

 

(7783-54-2)

10

29

 

 

 

 

Nitroglycerine

 

 

 

 

 

 

(55-63-0) — Skin

0.05

0.5

 

 

 

 

Nitromethane

 

 

 

 

 

 

(75-52-5)

20

 

 

 

 

 

1-Nitropropane

 

 

 

 

 

 

(108-03-2)

25

90

 

 

 

 

2-Nitropropane

 

 

 

 

 

 

(79-46-9)

1

35

20

70

 

 

Nitrotoluene (sum of m-, o-, and p-isomers:

 

 

 

 

 

 

(99-08-1), (88-72-2), and (99-99-0)) — Skin

2

11

 

 

 

 

Nitrous oxide

 

 

 

 

 

 

(10024-97-2)

25

45

 

 

 

 

Nonane

 

 

 

 

 

 

(111-84-2)

200

1,050

 

 

 

 

Octachloronaphthalene

 

 

 

 

 

 

(2234-13-1) — Skin

 

0.1

 

0.3

 

 

Octane

 

 

 

 

 

 

(111-65-9)

300

1,400

375

1,750

 

 

Oil, mineral — Mist

 

 

 

 

 

 

(8012-95-1)

 

5

 

10

 

 

Osmium tetroxide (as osmium)

 

 

 

 

 

 

(20816-12-0)

0.0002

0.002

0.0006

0.006

 

 

Oxalic acid

 

 

 

 

 

 

(144-62-7)

 

1

 

2

 

 

1,1´-Oxybisbenzene

 

 

 

 

 

 

(101-84-8)

1

7

2

14

 

 

1,1´-Oxybis(2-chloroethane)

 

 

 

 

 

 

(111-44-4) — Skin

5

29

10

58

 

 

Oxybis (chloromethane)

 

 

 

 

 

 

(542-88-1)

0.001

0.005

 

 

 

 

2,2´-(Oxybis(methylene))-bisoxirane

 

 

 

 

 

 

(2238-07-5)

0.1

0.53

 

 

 

 

2,2´-Oxybis(propane)

 

 

 

 

 

 

(108-20-3)

250

1,045

310

1,295

 

 

Oxygen difluoride

 

 

 

 

 

 

(7783-41-7)

 

 

 

 

0.05

0.1

Ozone

 

 

 

 

 

 

(10028-15-6)

0.1

0.2

0.3

0.6

 

 

Paraffin wax fume

 

 

 

 

 

 

(8002-74-2)

 

2

 

 

 

 

Paraquat

 

 

 

 

 

 

(1910-42-5)

 

0.1

 

 

 

 

Parathion

 

 

 

 

 

 

(56-38-2) — Skin

 

0.05

 

 

 

 

Particulates (insoluble) Not Otherwise Classified (PNOC)

 

 

 

 

 

 

- inhalable particulate

 

10(D)

 

 

 

 

- respirable particulate

 

3(D)

 

 

 

 

Penicillin (total dust)

 

 

 

 

 

 

(1406-05-9)

 

0.1

 

 

 

 

Pentaborane

 

 

 

 

 

 

(19624-22-7)

0.005

0.013

0.015

0.039

 

 

Pentachloronaphthalene

 

 

 

 

 

 

(1321-64-8)

 

0.5

 

 

 

 

Pentachloronitrobenzene

 

 

 

 

 

 

(82-68-8)

 

0.5

 

 

 

 

Pentachlorophenol

 

 

 

 

 

 

(87-86-5) — Skin

 

0.5

 

 

 

 

Pentaerythritol (total dust)

 

 

 

 

 

 

(115-77-5)

 

10

 

 

 

 

Pentaerythritol tetrabenzoate

 

 

 

 

 

 

(4196-86-5)

 

 

 

2

 

 

Pentane

 

 

 

 

 

 

(109-66-0)

600

1,770

750

2,210

 

 

2-Pentanone

 

 

 

 

 

 

(107-87-9)

200

700

250

880

 

 

3-Pentanone

 

 

 

 

 

 

(96-22-0)

200

 

300

 

 

 

Perchloryl fluoride

 

 

 

 

 

 

(7616-94-6)

3

13

6

25

 

 

Perlite (a)

 

10(D)

 

 

 

 

Perfluoroisobutylene

 

 

 

 

 

 

(382-21-8)

 

 

 

 

0.01

 

Persulfates, ammonium (7727-54-1), sodium (7775-27-1) and potassium persulfates (7727-21-1)

 

0.1

 

 

 

 

Petroleum ether

 

500

 

 

 

 

Petroleum coke (total dust)

 

 

 

 

 

 

(64741-79-3)

 

3.5(A)

 

 

 

 

Phenol

 

 

 

 

 

 

(108-95-2) — Skin

5

19

 

 

 

 

Phenothiazine

 

 

 

 

 

 

(92-84-2) — Skin

 

5

 

 

 

 

2-Phenoxyethanol

 

 

 

 

 

 

(122-99-6) — Skin

25

141

 

 

 

 

(Phenoxymethyl)oxirane

 

 

 

 

 

 

(122-60-1)

0.1

 

 

 

 

 

o-Phenylenediamine

 

 

 

 

 

 

(95-54-5)

 

0.1

 

 

 

 

m-Phenylenediamine

 

 

 

 

 

 

(108-45-2)

 

0.1

 

 

 

 

p-Phenylenediamine

 

 

 

 

 

 

(106-50-3) — Skin

 

0.1

 

 

 

 

Phenylhydrazine

 

 

 

 

 

 

(100-63-0) — Skin

0.1

 

 

 

 

 

Phenylphosphine

 

 

 

 

 

 

(638-21-1)

 

 

 

 

0.05

0.23

Phorate

 

 

 

 

 

 

(298-02-2) — Skin

 

0.05

 

0.2

 

 

Phosphine

 

 

 

 

 

 

(7803-51-2)

0.3

0.4

1

1.4

 

 

Phosphoric acid

 

 

 

 

 

 

(7664-38-2)

 

1

 

3

 

 

Phosphorothionic acid 0,0-diethyl 0-(6-methyl)-2-(1-methylethyl)-4-pyrimidinyl)ester

 

 

 

 

 

 

(333-41-5) — Skin

 

0.1

 

 

 

 

Phosphorus (yellow or white)

 

 

 

 

 

 

(7723-14-0)

 

0.1

 

 

 

 

Phosphorus oxychloride

 

 

 

 

 

 

(10025-87-3)

0.1

0.6

0.5

3

 

 

Phosphorus pentachloride

 

 

 

 

 

 

(10026-13-8)

0.1

0.85

 

 

 

 

Phosphorus pentasulfide

 

 

 

 

 

 

(1314-80-3)

 

1

 

3

 

 

Phosphorus trichloride

 

 

 

 

 

 

(7719-12-2)

0.2

1.1

0.5

2.8

 

 

Phthalic anhydride

 

 

 

 

 

 

(85-44-9)

1

6

 

 

 

 

m-Phthalodinitrile

 

 

 

 

 

 

(626-17-5)

 

5

 

 

 

 

Piperazine dihydrochloride

 

 

 

 

 

 

(142-64-3)

 

5

 

 

 

 

Platinum metal

 

 

 

 

 

 

(7440-06-4)

 

1

 

 

 

 

Platinum, water-soluble compounds of, including chloroplatinates (as platinum)

 

 

 

 

 

 

(7440-06-4)

 

0.002

 

 

 

 

Polychlorinated biphenyls (PCBs)1

 

0.05

 

 

 

 

Portland cement (total dust)

 

 

 

 

 

 

(65997-15-1)

 

10(D)

 

 

 

 

Potassium hydroxide

 

 

 

 

 

 

(1310-58-3)

 

 

 

 

 

2

Poultry dust (total dust)

 

5

 

 

 

 

Precipitated silica (total dust)

 

 

 

 

 

 

(1309-37-1)

 

10

 

 

 

 

Propane

 

 

 

 

 

 

(74-98-6)

2,500

 

 

 

 

 

Propargyl alcohol

 

 

 

 

 

 

(107-19-7) — Skin

1

2.3

 

 

 

 

((2-Propenyloxy) methyl) oxirane

 

 

 

 

 

 

(106-92-3) — Skin

1

 

 

 

 

 

beta-Propiolactone

 

 

 

 

 

 

(57-57-8)

0.5

1.5

 

 

 

 

Propionic acid

 

 

 

 

 

 

(79-09-4)

10

30

 

 

 

 

Propoxur

 

 

 

 

 

 

(114-26-1)

 

0.5

 

 

 

 

n-Propyl acetate

 

 

 

 

 

 

(109-60-4)

200

830

250

1,040

 

 

n-Propyl alcohol

 

 

 

 

 

 

(71-23-8) — Skin

200

490

250

615

 

 

1,2-Propylene glycol dinitrate

 

 

 

 

 

 

(6423-43-4) — Skin

0.05

0.34

 

 

 

 

1,2-Propylene glycol, total vapour & aerosol

 

 

 

 

 

 

(57-55-6)

50

155

 

 

 

 

1,2-Propylene glycol, aerosol only

 

 

 

 

 

 

(57-55-6)

 

10(C)

 

 

 

 

Propylene glycol monomethyl ether acetate

 

 

 

 

 

 

(108-65-6)

50

270

 

 

 

 

Propylenimine

 

 

 

 

 

 

(75-55-8) — Skin

2

4.7

 

 

 

 

n-Propyl nitrate

 

 

 

 

 

 

(627-13-4)

25

105

40

170

 

 

Propyne

 

 

 

 

 

 

(74-99-7)

1,000

1,635

1,250

2,045

 

 

Pyrethrum

 

 

 

 

 

 

(8003-34-7)

 

5

 

 

 

 

Pyridine

 

 

 

 

 

 

(110-86-1)

5

16

 

 

 

 

Quinone

 

 

 

 

 

 

(106-51-4)

0.1

0.44

 

 

 

 

Resorcinol

 

 

 

 

 

 

(108-46-3)

10

45

20

90

 

 

Rhodium, metal and water-insoluble compounds of (as rhodium)

 

 

 

 

 

 

(7440-16-6)

 

1

 

 

 

 

Rhodium, water-soluble compounds of, including chloride, nitrate, and sulfate (as rhodium)

 

 

 

 

 

 

(7440-16-6)

 

0.01

 

 

 

 

Ronnel

 

 

 

 

 

 

(299-84-3)

 

10

 

 

 

 

Rosin core solder pyrolysis products (as formaldehyde)

 

0.1

 

 

 

 

Rotenone (commercial)

 

 

 

 

 

 

(83-79-4)

 

5

 

 

 

 

Rouge (total dust)

 

 

 

 

 

 

(1309-37-1)

 

10(D)

 

 

 

 

Rubber solvent1

 

1,600

 

 

 

 

Selenium and its compounds except selenium hexafluoride and hydrogen selenide (as selenium)

 

 

 

 

 

 

(7782-49-2)

 

0.2

 

 

 

 

Selenium hexafluoride (as selenium)

 

 

 

 

 

 

(7783-79-1)

0.025

0.1

 

 

 

 

Shellac dust (total dust)

 

 

 

 

 

 

(9000-59-3)

 

10

 

 

 

 

Silane

 

 

 

 

 

 

(7803-62-5)

5

6.6

 

 

 

 

Silica fume, respirable

 

 

 

 

 

 

(69012-64-2)

 

2

 

 

 

 

Silica fused, respirable

 

 

 

 

 

 

(60676-86-0)

 

0.1

 

 

 

 

Silica gel

 

 

 

 

 

 

(112926-00-8)

 

10

 

 

 

 

Silicon (total dust)

 

 

 

 

 

 

(7440-21-3)

 

10

 

 

 

 

Silicon carbide (total dust)

 

 

 

 

 

 

(409-21-2)

 

10(D)

 

 

 

 

Silver, metal

 

 

 

 

 

 

(7440-22-4)

 

0.1

 

 

 

 

Silver, water-soluble compounds of (as silver)

 

 

 

 

 

 

(7440-22-4)

 

0.01

 

 

 

 

Sisal dust (total dust)

 

2

 

 

 

 

Soap dust

 

 

 

 

 

 

(68918-36-5)

 

5

 

 

 

 

Soapstone, total dust

 

6(D)

 

 

 

 

Soapstone, respirable

 

3(D)

 

 

 

 

Sodium azide

 

 

 

 

 

 

(26628-22-8)

 

 

 

 

0.1

0.26

Sodium bisulfite

 

 

 

 

 

 

(7631-90-5)

 

5

 

 

 

 

Sodium fluoroacetate

 

 

 

 

 

 

(62-74-8) — Skin

 

0.05

 

0.15

 

 

Sodium hydroxide

 

 

 

 

 

 

(1310-73-2)

 

 

 

 

 

2

Sodium metabisulfite

 

 

 

 

 

 

(7681-57-4)

 

5

 

 

 

 

Spectinomycin

 

2

 

 

 

 

Starch (total dust)

 

 

 

 

 

 

(9005-25-8)

 

10

 

 

 

 

Stearates (total dust)

 

10

 

 

 

 

Stoddard solvent1

 

 

 

 

 

 

(8052-41-3)

 

525

 

 

 

 

140 Degree C Flash Aliphatic Solvent, Type of Stoddard Solvent

 

525

 

 

 

 

Strontium chromate, as Cr

 

 

 

 

 

 

(7789-06-2)

 

0.0005

 

 

 

 

Strychnine

 

 

 

 

 

 

(57-24-9)

 

0.15

 

 

 

 

Styrene*

 

 

 

 

 

 

(100-42-5)

50

213

200

852

 

 

Sucrose (total dust)

 

 

 

 

 

 

(57-50-1)

 

10

 

 

 

 

Subtilisins (proteolytic enzymes as 100% pure crystalline enzyme)

 

 

 

 

 

 

(9014-01-1)

 

 

 

 

 

0.00006

Sulfometuron methyl

 

 

 

 

 

 

(74222-97-2)

 

5

 

 

 

 

Sulfur dioxide

 

 

 

 

 

 

(7446-09-5)

2

5.2

5

10.4

 

 

Sulfur hexafluoride

 

 

 

 

 

 

(2551-62-4)

1,000

5,970

 

 

 

 

Sulfur monochloride

 

 

 

 

 

 

(10025-67-9)

 

 

 

 

1

6

Sulfur pentafluoride

 

 

 

 

 

 

(5714-22-7)

 

 

 

 

0.01

0.1

Sulfur tetrafluoride

 

 

 

 

 

 

(7783-60-0)

 

 

 

 

0.1

0.4

Sulfuric acid

 

 

 

 

 

 

(7664-93-9)

 

1

 

3

 

 

Sulfuryl fluoride

 

 

 

 

 

 

(2699-79-8)

5

21

10

42

 

 

Sulprofos

 

 

 

 

 

 

(35400-43-2)

 

1

 

 

 

 

Synthetic Vitreous Fibres (Man made Mineral Fibres)

 

 

 

 

 

 

- Continuous filament glass fibres

1f/cc

 

 

 

 

 

- Continuous filament glass fibres, inhalable

 

5

 

 

 

 

- Glass wool fibres

1f/cc

 

 

 

 

 

- Rock wool fibres

1f/cc

 

 

 

 

 

- Slag wool fibres

1f/cc

 

 

 

 

 

- Special purpose glass fibres

1f/cc

 

 

 

 

 

- Synthetic vitreous fibres, not otherwise classified (excluding fibrous glass dust and mineral wool fibre)

1f/cc(E)

 

 

 

 

 

Talc (containing no asbestos fibres), respirable

 

 

 

 

 

 

(14807-96-6)

 

2(D)

 

 

 

 

Talc (containing fibres other than those of asbestos and tremolite asbestos)

 

2f/cc(B)

 

 

 

 

Tantalum, metal and oxide (total dust)

 

 

 

 

 

 

(7440-25-7)

 

10

 

 

 

Tellurium and its compounds except tellurium hexafluoride (as tellurium)

 

 

 

 

 

 

(13494-80-9)

 

0.1

 

 

 

 

Tellurium hexafluoride (as tellurium)

 

 

 

 

 

 

(7783-80-4)

0.01

0.1

 

 

 

 

Temephos

 

 

 

 

 

 

(3383-96-8)

 

10

 

 

 

 

Terephthalic acid

 

 

 

 

 

 

(100-21-0)

 

10

 

 

 

 

Terphenyls (sum of o-, m-, and p-isomers)

 

 

 

 

 

 

(84-15-1), (92-06-8), (92-94-4)

 

 

 

 

0.5

4.7

1,1,2,2-Tetrabromoethane

 

 

 

 

 

 

(79-27-6)

1

14

 

 

 

 

1,1,1,2-Tetrachloro-2,2-difluoroethane

 

 

 

 

 

 

(76-11-9)

500

4,165

 

 

 

 

1,1,2,2-Tetrachloro-1,2-difluoroethane

 

 

 

 

 

 

(76-12-0)

500

4,165

 

 

 

 

1,1,2,2-Tetrachloroethane

 

 

 

 

 

 

(79-34-5) — Skin

1

7

 

 

 

 

Tetrachloroethylene

 

 

 

 

 

 

(127-18-4)

25

 

100

 

 

 

Tetrachloronaphthalene

 

 

 

 

 

 

(1335-88-2)

 

2

 

 

 

 

Tetrachlorophathalic anhydride

 

 

 

 

 

 

(117-08-8)

 

0.1

 

 

 

 

Tetrachlorophenol

 

 

 

 

 

 

(25167-83-3) — Skin

 

0.5

 

 

 

 

Tetraethyl dithiono-pyrophosphate

 

 

 

 

 

 

(3689-24-5) — Skin

 

0.2

 

 

 

 

Tetraethyl pyrophosphate

 

 

 

 

 

 

(107-49-3) — Skin

0.004

0.047

 

 

 

 

Tetrahydrofuran

 

 

 

 

 

 

(109-99-9)

200

590

250

735

 

 

Tetramethoxysilane

 

 

 

 

 

 

(681-84-5)

1

6.2

 

 

 

 

Tetramethylsuccino-dinitrile

 

 

 

 

 

 

(3333-52-6) — Skin

0.5

2.8

 

 

 

 

Tetranitromethane

 

 

 

 

 

 

(509-14-8)

0.005

 

 

 

 

 

Tetrasodium pyrophosphate

 

 

 

 

 

 

(7722-88-5)

 

5

 

 

 

 

Thallium, water-soluble compounds of (as thallium)

 

 

 

 

 

 

(7440-28-0) — Skin

 

0.1

 

 

 

 

4,4´-Thiobis(6-tert-butyl-m-cresol)

 

 

 

 

 

 

(96-69-5)

 

10

 

 

 

 

Thioglycolic acid

 

 

 

 

 

 

(68-11-1) — Skin

1

3.8

 

 

 

 

Thionyl chloride

 

 

 

 

 

 

(7719-09-7)

 

 

 

 

1

5

Tin, metal, oxide and inorganic compounds of, except stannane (as tin)

 

 

 

 

 

 

(7440-31-5)

 

2

 

 

 

 

Tin, organic compounds of (as tin)

 

 

 

 

 

 

(7440-31-5) — Skin

 

0.1

 

 

 

 

Titanium dioxide (total dust)

 

 

 

 

 

 

(13463-67-7)

 

10

 

 

 

 

Toluidine (sum of o-, m- and p-isomers:

 

 

 

 

 

 

(95-53-4), (108-44-1), and (108-49-0)) — Skin

2

9

 

 

 

 

Toxaphene1

 

 

 

 

 

 

(8001-35-2) — Skin

 

0.5

 

1

 

 

Tributyl phosphate

 

 

 

 

 

 

(126-73-8)

0.2

2.2

 

 

 

 

Trichloroacetic acid

 

 

 

 

 

 

(76-03-9)

1

6.7

 

 

 

 

1,2,4-Trichlorobenzene

 

 

 

 

 

 

(120-82-1)

 

 

 

 

5

37

1,1,1-Trichloro-2,2-bis-(p-chlorophenyl)ethane

 

 

 

 

 

 

(50-29-3)

 

1

 

 

 

 

1,1,1-Trichloroethane

 

 

 

 

 

 

(71-55-6)

350

1,910

450

2,455

 

 

1,1,2-Trichloroethane

 

 

 

 

 

 

(79-00-5) — Skin

10

55

 

 

 

 

Trichloroethylene

 

 

 

 

 

 

(79-01-6)

50

 

100

 

 

 

Trichlorofluoromethane

 

 

 

 

 

 

(75-69-4)

 

 

 

 

1,000

5,600

Trichloromethane

 

 

 

 

 

 

(67-66-3)

10

49

 

 

 

 

Trichloromethanesulfenyl chloride

 

 

 

 

 

 

(594-42-3)

0.1

0.8

 

 

 

 

Trichloronaphthalene

 

 

 

 

 

 

(1321-65-9) — Skin

 

5

 

 

 

 

Trichloronitromethane

 

 

 

 

 

 

(76-06-2)

0.1

0.67

0.3

2

 

 

(2,4,5-Trichlorophenoxy) acetic acid and esters of (as 2,4,5-T)

 

 

 

 

 

 

(93-76-5)

 

10

 

 

 

 

1,2,3-Trichloropropane

 

 

 

 

 

 

(96-18-4) — Skin

10

60

 

 

 

 

1,1,2-Trichloro-1,2,2-trifluoroethane

 

 

 

 

 

 

(76-13-1)

1,000

7,650

1,250

9,560

 

 

Tri-ortho-cresyl phosphate

 

 

 

 

 

 

(78-30-8) — Skin

 

0.1

 

 

 

 

Triethanolamine

 

 

 

 

 

 

(102-71-6)

0.5

3.1

 

 

 

 

Triethylamine

 

 

 

 

 

 

(121-44-8)

1

 

3

 

 

 

Triethylenediamine

 

 

 

 

 

 

(280-57-9) — Skin

1

4.6

 

 

 

 

Triethylenetetramine

 

 

 

 

 

 

(112-24-3) — Skin

0.5

3

 

 

 

 

1,3,5-Triglycidyl-s-triazinetrione

 

 

 

 

 

 

(2451-62-9)

 

0.05

 

 

 

 

3,5,5-Trimethyl-2-cyclohexen-1-one

 

 

 

 

 

 

(78-59-1)

 

 

 

 

5

28

Trimellitic anhydride

 

 

 

 

 

 

(552-30-7)

 

 

 

 

 

0.04

Trimethoxyvinylsilane

 

 

 

 

 

 

(2768-02-7)

 

 

10

60

 

 

Trimethylamine

 

 

 

 

 

 

(75-50-3)

5

 

15

 

 

 

Trimethylbenzene (sum of isomers)

 

 

 

 

 

 

(25551-13-7)

25

123

 

 

 

 

Trimethyl phosphite

 

 

 

 

 

 

(121-45-9)

2

10

 

 

 

 

2,4,6-Trinitrophenol

 

 

 

 

 

 

(88-89-1) — Skin

 

0.1

 

0.3

 

 

Triphenyl amine

 

 

 

 

 

 

(603-34-9)

 

5

 

 

 

 

Triphenyl phosphate

 

 

 

 

 

 

(115-86-6)

 

3

 

 

 

 

Trixylylphosphate

 

 

 

 

 

 

(25155-23-1)

 

0.1

 

 

 

 

Tungsten, water-insoluble compounds of (as tungsten)

 

 

 

 

 

 

(7440-33-7)

 

5

 

10

 

 

Tungsten, water-soluble compounds of, including tungstic acids, phosphotungstic acids and their salts (as tungsten)

 

 

 

 

 

 

(7440-33-7)

 

1

 

3

 

 

Turpentine

 

 

 

 

 

 

(8006-64-2)

 

560

 

 

 

 

Uranium (natural) and its compounds (as uranium)

 

 

 

 

 

 

(7440-61-1)

 

0.2

 

0.6

 

 

V.M.& P. Naphtha1

 

 

 

 

 

 

(8030-30-6)

 

1,350

 

 

 

 

n-Valeraldehyde

 

 

 

 

 

 

(110-62-3)

50

175

 

 

 

 

Vanadium respirable dust and fume (as vanadium pentoxide)

 

 

 

 

 

 

(1314-62-1)

 

0.05

 

 

 

 

Vegetable oils (mists) except mists of irritant oils such as oils of castor and cashew nut

 

10

 

 

 

 

Vinyl acetate

 

 

 

 

 

 

(108-05-4)

10

 

15

 

 

 

Vinyl bromide

 

 

 

 

 

 

(593-60-2)

0.5

 

 

 

 

 

4-Vinyl cyclohexene

 

 

 

 

 

 

(100-40-3)

0.1

 

 

 

 

 

Vinyl fluoride

 

 

 

 

 

 

(75-02-5)

1

 

 

 

 

 

Vinylidene fluoride

 

 

 

 

 

 

(75-38-7)

500

 

 

 

 

 

Vinyltoluene (mixture of m- and p-isomers)

 

 

 

 

 

 

(25013-15-4)

50

241

100

482

 

 

Warfarin

 

 

 

 

 

 

(81-81-2)

 

0.1

 

 

 

 

Welding fume, not otherwise specified

 

 

 

 

 

 

Aluminum-containing (as aluminum)

 

 

 

 

 

 

(7429-90-5)

 

5

 

 

 

 

Iron-containing (as iron)

 

 

 

 

 

 

(7439-89-6)

 

5

 

 

 

 

Other, not otherwise classified (total weight, oil free)

 

5

 

 

 

 

Wheat flour dust (total dust)

 

3

 

 

 

 

Wood dust

 

 

 

 

 

 

- certain hardwoods as beech and oak

 

1

 

 

 

 

- softwood

 

5

 

10

 

 

m-Xylene-alpha, alpha'-diamine

 

 

 

 

 

 

(1477-55-0) — Skin

 

 

 

 

 

0.1

Yttrium, metal and compounds (as yttrium)

 

 

 

 

 

 

(7440-65-5)

 

1

 

 

 

 

Zinc chromates,

 

 

 

 

 

 

(13530-65-9;11103-86-9;37300-23-5) as Cr

 

0.01

 

 

 

 

Zinc chloride fume

 

 

 

 

 

 

(7646-85-7)

 

1

 

2

 

 

Zinc oxide dust (total dust)

 

 

 

 

 

 

(1314-13-2)

 

10

 

 

 

 

Zinc oxide fume

 

 

 

 

 

 

(1314-13-2)

 

5

 

10

 

 

Zirconium compounds (as zirconium)

 

 

 

 

 

 

(7440-67-7)

 

5

 

10

 

 

* Special exceptions may apply to this substance; see section 9 of the regulation.

Footnotes

(A) Provided that the total dust contains less than 0.7% vanadium.

(B) Provided that the respirable dust concentration does not exceed 2 mg/m3.

(C) For assessing the visibility in a work environment where 1,2-propylene glycol aerosol is present.

(D) The value is for particulate matter containing no asbestos and less than 1% crystalline silica.

(E) A secondary limit of 5 mg/m3 (total dust) is recommended to deal with dusty operations where fibre counts are usually difficult to determine.  Where both types of measurements are made simultaneously, the more restrictive limit should be used to assess the exposures.

(F) As measured by the vertical elutraitor, cotton-dust sampler.

1 As sum of components assayed by chromatographic procedure with reference to the bulk sample.

(2) Part 4 of the Schedule to the Regulation is amended by striking out the following item:

 

Manganese, dust and compounds (as manganese)

 

 

 

 

 

 

(7439-96-5)

 

5

 

 

 

 

(3) Part 4 of the Schedule to the Regulation is amended by adding the following item:

 

Manganese, dust and compounds (as manganese)

 

 

 

 

 

 

(7439-96-5)

 

0.2

 

 

 

 

 

(4) Part 4 of the Schedule to the Regulation is amended by striking out the following items:

 

1, 3-Butadiene

 

 

 

 

 

 

(106-99-0)

5

 

 

 

 

 

 

. . . . .

 

Carbon monoxide

 

 

 

 

 

 

630-08-0)

35

40

400

460

 

 

 

(5) Part 4 of the Schedule to the Regulation is amended by adding the following items:

 

1, 3-Butadiene

 

 

 

 

 

 

(106-99-0)

2

 

 

 

 

 

 

. . . . .

 

Carbon monoxide

 

 

 

 

 

 

(630-08-0)

25

29

100

115

 

 

 

6. (1) Part 10 of the Schedule to the Regulation is amended by striking out the following item:

 

N-Nitrosamines — Skin (e.g. N­Nitrosodimethylamine)

(a) 

(2) Part 10 of the Schedule to the Regulation is amended by adding the following item:

 

N-Nitrosamines — Skin (e.g. N­Nitrosodimethylamine)

 

7. (1) Part 11 of the Schedule to the Regulation is revoked and the following substituted:

PART 11
EXPOSURE VALUES* FOR ACRYLONITRILE, BENZENE AND MERCURY

 

Agent
(CAS Reg. No.)

TWAEV

STEV

CEV

ppm

mg/m3

ppm

mg/m3

ppm

mg/m3

Acrylonitrile
(107-13-1)

2

4.3

 

 

10

21.5

Benzene
(71-43-2)

1

 

5.0

 

 

 

Mercury

 

 

 

 

 

 

- All forms of except alkyl (as mercury)
(7439-97-6) — Skin

 

0.025

 

 

 

 

- Alkyl compounds of (as mercury)
(7439-97-6) — Skin

 

0.01

 

0.03

 

 

* The values listed in this part apply to workplaces to which the designated substance regulation does not apply.

(2) Part 11 of the Schedule to the Regulation is amended by striking out the following item:

 

Benzene

1

 

5.0

 

 

 

(71-43-2)

 

 

 

 

 

 

 

(3) Part 11 of the Schedule to the Regulation is amended by adding the following item:

 

Benzene

0.5

 

2.5

 

 

 

(71-43-2)

 

 

 

 

 

 

 

8. (1) Subject to subsections (2) and (3), this Regulation comes into force on the day it is filed.

(2) Subsections 5 (2) and (3) come into force on June 30, 2004.

(3) Subsections 5 (4) and (5) and subsections 7 (2) and (3) come into force on December 31, 2005.