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

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

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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

. . . . .

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.

Molybdenum metal, dioxide and disulfide (as molybdenum)

(7439-98-7)

Molybdenum trioxide and molybdates (as molybdenum)

(7439-98-7)