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O. Reg. 16/05: CONTROL OF EXPOSURE TO BIOLOGICAL OR CHEMICAL AGENTS

filed February 3, 2005 under Occupational Health and Safety Act, R.S.O. 1990, c. O.1

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ontario regulation 16/05

made under the

occupational health and safety act

Made: February 2, 2005
Filed: February 3, 2005
Printed in The Ontario Gazette: February 19, 2005

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

(Control of Exposure to Biological or Chemical Agents)

1. (1) Part 4 of the Schedule to Regulation 833 of the Revised Regulations of Ontario, 1990 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

20

 

 

 

 

 

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)

0.5

 

 

 

 

 

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

 

 

 

 

tert-Amyl methyl ether (TAME)

 

 

 

 

 

 

(994-05-8)

20

 

 

 

 

 

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  (Bitumen) fume, as benzene-soluble aerosol, inhalable

 

 

 

 

 

 

(8052-42-4)

 

0.5

 

 

 

 

Atrazine

 

 

 

 

 

 

(1912-24-9)

 

5

 

 

 

 

Azinphos-methyl, inhalable, vapour and aerosol

 

 

 

 

 

 

(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

 

 

 

 

Bis(2-(dimethylaminoethyl)) ether (DMAEE)

 

 

 

 

 

 

(3033-62-3) — Skin

0.05

 

0.15

 

 

 

2,6-Bis(1,1-dimethylethyl)-4-methylphenol, also known as Butylated hydroxytoluene (BHT), inhalable, vapour and aerosol

 

 

 

 

 

 

(128-37-0)

 

2

 

 

 

 

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, all isomers

 

 

 

 

 

 

(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 (EGBEA)

 

 

 

 

 

 

(112-07-2)

20

 

 

 

 

 

(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-Butanol, also known as n-Butyl alcohol

 

 

 

 

 

 

(71-36-3)

 

20

 

 

 

 

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

 

 

 

 

 

 

(471-34-1)

 

10 (D)

 

 

 

 

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, inhalable, vapour and aerosol

 

 

 

 

 

 

(105-60-2)

 

5

 

 

 

 

Captafol

 

 

 

 

 

 

(2425-06-1) — Skin

 

0.1

 

 

 

 

Captan, inhalable

 

 

 

 

 

 

(133-06-2)

 

5

 

 

 

 

Carbofuran, inhalable, vapour and aerosol

 

 

 

 

 

 

(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

 

 

 

 

1-Chloro-2-propanol

 

 

 

 

 

 

(127-00-4) — Skin

1

 

 

 

 

 

2-Chloro-1-propanol

 

 

 

 

 

 

(78-89-7) — Skin

1

 

 

 

 

 

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, inhalable, vapour and aerosol

 

 

 

 

 

 

(2921-88-2) — Skin

 

0.1

 

 

 

 

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)

100

 

 

 

 

 

Cyclohexanol

 

 

 

 

 

 

(108-93-0) — Skin

50

200

 

 

 

 

Cyclohexanone

 

 

 

 

 

 

(108-94-1) — Skin

20

 

50

 

 

 

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, inhalable, vapour and aerosol

 

 

 

 

 

 

(8065-48-3) — Skin

 

0.05

 

 

 

 

Demeton-S-methyl, inhalable, vapour and aerosol

 

 

 

 

 

 

(919-86-8) — Skin

 

0.05

 

 

 

 

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)

 

 

 

 

Diazinon, inhalable, vapour and aerosol, also known as Phosphorothionic acid 0,0-diethyl 0-(6-methyl)-2-(1-methylethyl)-4-pyrimidinyl) ester

 

 

 

 

 

 

(333-41-5) — Skin

 

0.01

 

 

 

 

Diazomethane

 

 

 

 

 

 

(334-88-3)

0.2

0.34

 

 

 

 

Diborane

 

 

 

 

 

 

(19287-45-7)

0.1

0.11

 

 

 

 

Dibromodifluoromethane

 

 

 

 

 

 

(75-61-6)

100

860

 

 

 

 

2-N-(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-Dichloroethylene

 

 

 

 

 

 

(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, inhalable

 

 

 

 

 

 

(75-99-0)

 

5

 

 

 

 

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

 

 

 

 

 

 

(76-14-2)

1,000

6,985

 

 

 

 

Dichlorvos (DDVP), inhalable, vapour and aerosol

 

 

 

 

 

 

(62-73-7) — Skin

 

0.1

 

 

 

 

Dicrotophos, inhalable, vapour and aerosol

 

 

 

 

 

 

(141-66-2) — Skin

 

0.05

 

 

 

 

Dicyclopentadiene

 

 

 

 

 

 

(77-73-6)

5

27

 

 

 

 

Dieldrin

 

 

 

 

 

 

(60-57-1) — Skin

 

0.25

 

 

 

 

Diesel fuel, as total hydrocarbons, vapour and aerosol

 

 

 

 

 

 

(68334-30-5; 68476-30-2; 68476-31-3; 68476-34-6; 77650-28-3) — Skin

 

100

 

 

 

 

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

 

 

 

 

Diethylene triamine

 

 

 

 

 

 

(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), inhalable, vapour and aerosol, also known as Xylidine

 

 

 

 

 

 

(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 sulfide

 

 

 

 

 

 

(75-18-3)

10

 

 

 

 

 

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, inhalable, vapour and aerosol

 

 

 

 

 

 

(78-34-2) — Skin

 

0.1

 

 

 

 

1,3-Dioxolane

 

 

 

 

 

 

(646-06-0)

20

 

 

 

 

 

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, inhalable, vapour and aerosol

 

 

 

 

 

 

(298-04-4) — Skin

 

0.05

 

 

 

 

Diuron

 

 

 

 

 

 

(330-54-1)

 

10

 

 

 

 

m-Divinylbenzene

 

 

 

 

 

 

(108-57-6)

10

53

 

 

 

 

Dodecyl mercaptan

 

 

 

 

 

 

(112-55-0)

0.1

 

 

 

 

 

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

 

 

 

 

 

Ethane

 

 

 

 

 

 

(74-84-0)

1,000

 

 

 

 

 

Ethanethiol

 

 

 

 

 

 

(75-08-1)

0.5

1.3

 

 

 

 

Ethanol

 

 

 

 

 

 

(64-17-5)

1,000

1,900

 

 

 

 

Ethion, inhalable, vapour and aerosol

 

 

 

 

 

 

(563-12-2) — Skin

 

0.05

 

 

 

 

Ethoxyethane

 

 

 

 

 

 

(60-29-7)

400

1,210

500

1,515

 

 

2-Ethoxyethanol (EGEE)

 

 

 

 

 

 

(110-80-5) — Skin

5

18

 

 

 

 

2-Ethoxyethyl acetate (EGEEA)

 

 

 

 

 

 

(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 tert-butyl ether (ETBE)

 

 

 

 

 

 

(637-92-3)

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 (EGDN)

 

 

 

 

 

 

(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

 

 

 

 

2-Ethylhexanoic acid, inhalable, vapour and aerosol

 

 

 

 

 

 

(149-57-5)

 

5

 

 

 

 

Ethyl methacrylate

 

 

 

 

 

 

(97-63-2)

100

470

 

 

 

 

N-Ethylmorpholine

 

 

 

 

 

 

(100-74-3) — Skin

5

23

 

 

 

 

O-Ethyl O-p-nitrophenyl phenylphosphonothioate (EPN), inhalable

 

 

 

 

 

 

(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

 

 

 

 

 

 

(86290-81-5)

300

 

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

 

Glyoxal, inhalable, vapour and aerosol

 

 

 

 

 

 

(107-22-2)

 

0.1

 

 

 

 

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, also known as 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

 

 

 

 

Hexahydrophthalic anhydride, All isomers, inhalable, vapour and aerosol

 

 

 

 

 

 

(85-42-7; 13149-00-3; 14166-21-3)

 

 

 

 

 

0.005

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)

 

 

 

 

2

 

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 (Fe2O3) dust and fume (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 alcohol

 

 

 

 

 

 

(123-51-3)

100

360

125

450

 

 

Isobutyl acetate

 

 

 

 

 

 

(110-19-0)

150

710

187

887

 

 

Isobutyl alcohol

 

 

 

 

 

 

(78-83-1)

50

150

 

 

 

 

Isobutyl nitrite, inhalable, vapour and aerosol

 

 

 

 

 

 

(542-56-3)

 

 

 

 

1

 

Isooctyl alcohol

 

 

 

 

 

 

(26952-21-6) — Skin

 

270

 

 

 

 

2-Isopropoxyethanol

 

 

 

 

 

 

(109-59-1)

25

105

 

 

 

 

Isopropanol, also known as Isopropyl alcohol

 

 

 

 

 

 

(67-63-0)

200

 

400

 

 

 

Isopropyl acetate

 

 

 

 

 

 

(108-21-4)

100

 

200

 

 

 

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, as total hydrocarbon vapour

 

 

 

 

 

 

(8008-20-6; 64742-81-0/Jet fuels) — Skin

 

200 (G)

 

 

 

 

Ketene

 

 

 

 

 

 

(463-51-4)

0.5

0.9

1.5

2.6

 

 

L.P.G. (Liquified petroleum gas)

 

 

 

 

 

 

(68476-85-7)

1,000

 

 

 

 

 

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, inhalable

 

 

 

 

 

 

(1309-48-4)

 

10

 

 

 

 

Malathion, inhalable, vapour and aerosol

 

 

 

 

 

 

(121-75-5) — Skin

 

1

 

 

 

 

Maleic anhydride

 

 

 

 

 

 

(108-31-6)

0.1

 

 

 

 

 

Manganese, and inorganic compounds (as manganese)

 

 

 

 

 

 

(7439-96-5)

 

0.2

 

 

 

 

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 (EGME)

 

 

 

 

 

 

(109-86-4) — Skin

5

16

 

 

 

 

2-Methoxyethyl acetate (EGMEA)

 

 

 

 

 

 

(110-49-6) — Skin

5

24

 

 

 

 

Methoxyflurane

 

 

 

 

 

 

(76-38-0)

2

13

 

 

 

 

4-Methoxyphenol

 

 

 

 

 

 

(150-76-5)

 

5

 

 

 

 

1-Methoxy-2-propanol (PGME)

 

 

 

 

 

 

(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 tert-butyl ether (MTBE)

 

 

 

 

 

 

(1634-04-4)

40

 

 

 

 

 

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)

50

 

100

 

 

 

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

 

 

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, inhalable, vapour and aerosol

 

 

 

 

 

 

(7786-34-7) — Skin

 

0.01

 

 

 

 

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, inhalable, vapour and aerosol

 

 

 

 

 

 

(6923-22-4) — Skin

 

0.05

 

 

 

 

Morpholine

 

 

 

 

 

 

(110-91-8) — Skin

20

70

30

105

 

 

Naled, inhalable, vapour and aerosol

 

 

 

 

 

 

(300-76-5) — Skin

 

0.1

 

 

 

 

Naphthalene

 

 

 

 

 

 

(91-20-3)

10

52

15

78

 

 

1-Naphthyl N-methyl-carbamate

 

 

 

 

 

 

(63-25-2)

 

5

 

 

 

 

alpha-Naphthylthiourea

 

 

 

 

 

 

(86-88-4)

 

0.3

 

 

 

 

Natural rubber latex, as Total proteins, inhalable

 

 

 

 

 

 

(9006-04-6) — Skin

 

0.001

 

 

 

 

Nepheline syenite (total dust)

 

 

 

 

 

 

(37244-96-5)

 

10

 

 

 

 

Nickel carbonyl (as nickel)

 

 

 

 

 

 

(13463-39-3)

0.05

0.35

 

 

 

 

Nickel, elemental/metal, inhalable

 

 

 

 

 

 

(7440-02-0)

 

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, as Ni

 

 

 

 

 

 

(12035-72-2)

 

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 (NG)

 

 

 

 

 

 

(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

 

 

p,p´-Oxybis(benzenesulfonyl hydrazide), inhalable

 

 

 

 

 

 

(80-51-3)

 

0.1

 

 

 

 

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, inhalable, vapour and aerosol

 

 

 

 

 

 

(56-38-2) — Skin

 

0.05

 

 

 

 

Particles (insoluble or poorly soluble) Not Otherwise Specified (PNOS)

 

 

 

 

 

 

- inhalable particulate

 

10

 

 

 

 

- respirable particulate

 

3

 

 

 

 

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

 

 

 

Pentyl acetate, All isomers

 

 

 

 

 

 

(628-63-7, n-Amyl acetate; 626-38-0, Sec-amyl acetate; 123-92-2, Isoamyl acetate; 625-16-1; 624-41-9; 620-11-1)

50

 

100

 

 

 

Perchloryl fluoride

 

 

 

 

 

 

(7616-94-6)

3

13

6

25

 

 

Perfluorobutyl ethylene

 

 

 

 

 

 

(19430-93-4)

100

 

 

 

 

 

Perfluoroisobutylene

 

 

 

 

 

 

(382-21-8)

 

 

 

 

0.01

 

Perlite (a)

 

10(D)

 

 

 

 

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, also known as Phenyl glycidyl ether (PGE) — Skin

 

 

 

 

 

 

(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

 

 

 

 

 

Phenyl mercaptan

 

 

 

 

 

 

(108-98-5) — 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

 

 

Phosphorus (yellow)

 

 

 

 

 

 

(12185-10-3)

 

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)

1,000

 

 

 

 

 

n-Propanol, also known as n-Propyl alcohol

 

 

 

 

 

 

(71-23-8)

200

490

250

615

 

 

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

 

 

 

 

Propionaldehyde

 

 

 

 

 

 

(123-38-6)

20

 

 

 

 

 

Propionic acid

 

 

 

 

 

 

(79-09-4)

10

30

 

 

 

 

Propoxur

 

 

 

 

 

 

(114-26-1)

 

0.5

 

 

 

 

n-Propyl acetate

 

 

 

 

 

 

(109-60-4)

200

830

250

1,040

 

 

1,2-Propylene glycol dinitrate

 

 

 

 

 

 

(6423-43-4) — Skin

0.05

0.34

 

 

 

 

1,2-Propylene glycol, total vapour and 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

 

 

 

 

Propylene oxide

 

 

 

 

 

 

(75-56-9)

2

 

 

 

 

 

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)

1

 

 

 

 

 

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

 

 

 

 

 

 

(409-21-2)

 

 

 

 

 

 

Nonfibrous - inhalable

 

10(D)

 

 

 

 

- respirable

 

3 (D)

 

 

 

 

Fibrous (including whiskers)

 

 

 

 

 

 

- respirable

0.1 f/cc (F)

 

 

 

 

 

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

 

 

 

 

Terbufos, inhalable, vapour and aerosol

 

 

 

 

 

 

(13071-79-9) — Skin

 

0.01

 

 

 

 

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 (TEPP)

 

 

 

 

 

 

(3689-24-5) — Skin

 

0.2

 

 

 

 

Tetraethyl pyrophosphate

 

 

 

 

 

 

(107-49-3) — Skin

0.004

0.047

 

 

 

 

Tetrafluoroethylene

 

 

 

 

 

 

(116-14-3)

2

 

 

 

 

 

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

 

 

Trichlorphon, inhalable

 

 

 

 

 

 

(52-68-6)

 

1

 

 

 

 

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 and selected monoterpenes

 

 

 

 

 

 

(8006-64-2; 80-56-8; 127-91-3; 13466-78-9)

20

 

 

 

 

 

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

 

 

 

 

 

N-Vinyl-2-pyrrolidone

 

 

 

 

 

 

(88-12-0)

0.05

 

 

 

 

 

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 chloride fume

 

 

 

 

 

 

(7646-85-7)

 

1

 

2

 

 

Zinc chromates,

 

 

 

 

 

 

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

 

0.01

 

 

 

 

Zinc oxide, respirable

 

 

 

 

 

 

(1314-13-2)

 

2

 

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.

(G) Application of limit restricted to conditions in which there are negligible aerosol exposures. 

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,

 

1, 3-Butadiene

 

 

 

 

 

 

(106-99-0)

5

 

 

 

 

 

. . . . .

Carbon monoxide

 

 

 

 

 

 

(630-08-0)

35

40

400

460

 

 

and substituting the following:

 

1, 3-Butadiene

 

 

 

 

 

 

(106-99-0)

2

 

 

 

 

 

. . . . .

Carbon monoxide

 

 

 

 

 

 

(630-08-0)

25

29

100

115

 

 

(3) Part 4 of the Schedule to the Regulation is amended by striking out,

 

Hydrogen chloride

 

 

 

 

 

 

(7647-01-0)

 

 

 

 

5

7.4

. . . .  .

Molybdenum metal, dioxide and disulfide (as molybdenum)

 

 

 

 

 

 

(7439-98-7)

 

10

 

 

 

 

Molybdenum trioxide and molybdates (as molybdenum)

 

 

 

 

 

 

(7439-98-7)

 

5

 

 

 

 

and substituting the following: 

 

Hydrogen chloride

 

 

 

 

 

 

(7647-01-0)

 

 

 

 

2

 

. .  . . .

Molybdenum, as molybdenum

 

 

 

 

 

 

(7439-98-7)

 

 

 

 

 

 

Metal and insoluble compounds

 

 

 

 

 

 

- inhalable

 

10

 

 

 

 

- respirable

 

3

 

 

 

 

Soluble compounds

 

 

 

 

 

 

-respirable

 

0.5

 

 

 

 

(4) Part 9 of the Schedule to the Regulation is amended by striking out, 

 

Ethane

(74-84-0)

. . . . .

Propane

(74-98-6)

(5) Part 11 of the Schedule to the Regulation is amended by striking out,

 

Acrylonitrile

2

4.3

 

 

10

21.5

(107-13-1)

 

 

 

 

 

 

and substituting the following:

 

Acrylonitrile

2

4.3

 

 

 

 

(107-13-1) — Skin

 

 

 

 

 

 

2. (1) Subject to subsections (2) and (3), this Regulation comes into force on filing.

(2) Subsection 1 (2) comes into force on December 31, 2005.

(3) Subsection 1 (3) comes into force on March 1, 2006.