300 Toxic and Hazardous Substances

300 Toxic and Hazardous Substances
300.01 Scope
300.02 Definitions Applicable to this Section
300.03 General Requirements
300.04 Prohibited use of Cyanide or Cyanide Mixtures
300.05 Air Contaminants
300.06 Computation Formula
300.07 Disposal of Hazardous and Toxic Waste Material

300. TOXIC AND HAZARDOUS SUBSTANCES. (7-1-97)

01. Scope: (7-1-97)

a. The use and exposure to toxic and to hazardous substances shall conform to all other applicable requirements of this standard, as well as the following provisions. Nothing in this standard shall be construed to prohibit better or otherwise safer conditions than specified herein. (7-1-97)

02. Definitions: For definitions of terms used in this section, see sub-section 010 of this standard. (7-1-97)

03. General Requirements: (7-1-97)

a. Rules and Regulations of the State Department of Health and Welfare shall be complied with by every employer and shall be enforced as provided for by law. (7-1-97)

b. Any type of paint, solvent, or cleansing liquids containing toxic additives shall have a label on each and every box, package or container showing thereon the name and type of such ingredients and/or toxic additives and the amount of each. (7-1-97)

c. The requirements and procedures for specific materials/substances are contained is other sections of this standard. (7-1-97)

04. Prohibited use of Cyanide or Cyanide Mixtures: (7-1-97)

a. Use of compounds containing dimethylomano-propionitrile, or bis (2 dimethylamino, ethyl, ether), in the sewer grout process, is hereby prohibited. (7-1-97)

b. The term bis (2-dimethylamionom ethyl, ether) shall also include compounds referred to as 2,2' oxybis (N, N dimethylethylamine). (7-1-97)

c. The term dimethylamenopropionitrile shall also include compounds referred to as 3 - (dimethylamino) propionitrile. (7-1-97)

05. Air contaminants: (7-1-97)

a. An employee's exposure to any material listed in Table 300.05-A, of this section shall be limited in accordance with the requirements of the following sub-section. (7-1-97)

b. An employee's exposure to any material in Table 300.05-A, the name of which is preceded by a "C" (Ceiling Value) shall at no time exceed the ceiling value given for that material in the table. If instantaneous monitoring is not feasible, then the ceiling shall be assessed as a fifteen (15) minute time weighted average exposure which shall not be exceeded at any time during the working day. (7-1-97)

c. An employee's exposure to any material in Table 300.05-A, the name of which is not preceded by "C", in any eight (8) hour work shift of a forty (40) hour work week, shall not exceed the eight (8) hour weighted average given for that material in the table. (7-1-97)

TABLE 300.05-A

LIMITS FOR AIR CONTAMINANTS

Substance CAS No.^c ppm^a1 mg\m^3b1 Designation

Acetaldehyde 75-07-0 200 360

Acetic acid 64-19-7 10 25

Acetic anhydride 108-24-7 5 20

Acetone 67-64-1 1000 2400

Acetonitrile 75-05-8 40 70

2-Acetylaminofluorene 53-96-3

Acetylene dichloride, see 1, 2- Dichloroethylene

Acetylene tetrabromide 79-27-6 1 14

Acrolein 107-02-8 0.1 0.25

Acrylamide 79-06-1 0.3 X

Acrylonitrile 107-13-1

Aldrin 309-00-2 0.25 X

Allyl alcohol 107-18-6 2 5 X

Allyl chloride 107-05-1 1 3

Allyl glycidyl ether (AGE) 106-92-3 ^C10 ^C45

Allyl propyl disulfide 2179-59-1 2 12

alpha-Alumina
Total dust
Respirable fraction 1344-28-1
15
5

4-Aminodiphenyl 92-67-1

2-Aminoethanol, see Ethanolamine

2-Aminopyridine 504-29-0 0.5 2

Ammonia 7664-41-7 50 35

Ammonium sulfamate
Total dust
Respirable fraction 7773-06-0
15
5

n-Amyl acetate 628-63-7 100 525

sec-Amyl acetate 626-38-0 125 650

Aniline 62-53-3 5 19 X

Anisidine (o,p-isomers) 29191-52-4 0.5 X

Antimony and compounds (as Sb) 7440-36-0 0.5

ANTU (alph Naphthylthiourea) 86-88-4 0.3

Arsenic, inorganic compounds (as As) 7440-38-2

Arsenic, organic compounds (as As) 7440-38-2 0.5

Arsine 7784-42-1 0.05 0.2

Asbestos ⁴

Azinphos-methyl 86-50-0 0.2 X

Barium, soluble compounds (as Ba) 7440-39-3 0.5

Barium sulfate
Total dust
Respirable fraction 7727-43-7
15
5

Benomyl
Total dust
Respirable fraction 17804-35-2
15
5

Benzene^d 71-43-2

Benzidine 92-87-5

p-Benzoquinone, see Quinone

Benzo^apyrene
Coal tar pitch volatiles

Benzoyl peroxide 94-36-0 5

Benzyl chloride 100-44-7 1 5

Beryllium compounds (as Be) 7440-41-7 ²

Biphenyl, see Diphenyl

Bismuth telluride
Undoped
Total dust
Respirable fraction
1304-82-1
15
5

Boron oxide
Total dust 1303-86-2
15

Boron trifluoride 7637-07-2 ^C1 ^C3

Bromine 7726-95-6 0.1 0.7

Bromoform 75-25-2 0.5 5 X

Butadiene (1, 3-butadiene) 106-99-0 1000 2200

Butanethiol, see butyl mercaptan

2-Butanone (Methyl ethyl ketone) 78-93-3 200 590

2-Butoxyethanol 111-76-2 50 240 X

n-Butyl acetate 123-86-4 150 710

sec-Butyl acetate 105-46-4 200 950

tert-Butyl-acetate 540-88-5 200 950

n-Butyl alcohol 71-36-3 100 300

sec-Butyl alcohol 78-92-2 150 450

tert-Butyl alcohol 75-65-0 100 300

Butylamine 109-73-9 ^C5 ^C15 X

tert-Butyl chromate (as CrO³) 1189-85-1 C0.1 X

n-Butyl glycidyl ether (BGE) 2426-08-6 50 270

Butyl mercaptan 109-79-5 10 35

p-tert-Butyltoluene 98-51-1 10 60

Cadmium (ac Cd) 7440-43-9

Calcium Carbonate
Total dust
Respirable fraction 1317-65-3
15
5

Calcium hydroxide
Total dust
Respirable fraction 1305-62-0
15
5

Calcium oxide 1305-78-8 5

Calcium silicate
Total dust
Respirable fraction 1344-95-2
15
5

Calcium sulfate
Total dust
Respirable fraction 7778-18-9
15
5

Camphor, synthetic 76-22-2 2

Carbaryl (Sevin^R) 62-25-2 5

Carbon black 1333-86-4 3.5

Carbon dioxide 124-38-9 5000 9000

Carbon disulfide 75-15-0 ²

Carbon monoxide 630-08-0 50 55

Carbon tetrachloride 56-23-5 ²

Cellulose
Total dust
Respirable fraction 9004-34-6
15
5

Chlordane 57-74-9 0.5 X

Chlorinated camphene 8001-35-2 0.5 X

Chlorinated diphenyl oxide 55720-99-5 0.5

Chlorine 7782-50-5 ^C1 ^C3

Chlorine dioxide 10049-04-4 0.1 0.3

Chlorine trifluoride 7790-91-2 ^C0.1 ^C0.4

Chloroacetaldehyde 107-20-0 ^C1 ^C3

a-Chloroacetophenone (Phenacyl chloride) 532-27-4 0.05 0.3

Chlorobenzene 108-90-7 75 350

o-Chlorobenzylidene malononitrile 2698-41-1 0.05 0.4

Chlorobromomethane 74-97-5 200 1050

2-Chloro-1, 3-butadiene, see beta-Chloroprene

Chlorodiphenyl (42% Chlorine) (PCB) 53469-21-9 1 X

Chlorodiphenyl (54% Chlorine) (PCB) 11097-69-1 0.5 X

1-Chloro-2, 3-epoxypropane, see Epichlorhydrin

2-Chloroethanol, see Ethylene chlorohydrin

Chloroethylene, see Vinyl chloride

C Chloroform (trichloromethane) 67-66-3 ^C50 ^C240

bis(Chloromethyl) ether 542-88-1

Chloromethyl methyl ether 107-30-2

1-Chloro-1-nitropropane 600-25-9 20 100

Chloropicrin 76-06-2 0.1 07

beta-Chloroprene 126-99-8 25 90 X

2-Chloro-6 (trichloromethyl) pyridine
Total dust
Respirable fraction 1929-82-4

15
5

Chromic acid and chromates (as CrO³) ⁴ ²

Chromium (II) compounds (as Cr) 7440-47-3 0.5

Chromium (III) compounds (as Cr) 7440-47-3 0.5

Chromium metal and insol. salts (as Cr) 7440-47-3 1

Chrysene, see Coal tar pitch volatiles

Clopidol
Total dust
Respirable fraction 2971-90-6
15
5

Coal dust (less than 5% SiO²), respirable fraction ³

Coal dust (greater than or equal to 5% SiO²) respirable fraction ³

Coal tar pitch volatiles (benzene soluble fraction) anthracene, BaP, phenanthrene, acridine, chrysene, pyrene 65966-93-2 0.2

Cobalt metal, fume, and dust (as Co) 7440-48-4 0.1

Coke oven emissions

Copper
Fume (as Cu)
Dusts and Mists (as Cu) 744-50-8
0.1
1

Cotton dust^e

Crag� herbicide (Sesone)
Total dust
Respirable fraction 136-78-7
15
5

Cresol, all isomers 1319-77-3 5 22 X

Crotonaldehyde 123-73-9
4170-30-3 2 6

Cumene 98-82-9 50 245 X

Cyanides (as CN) ⁴ 5

Cyclohexane 110-82-7 300 1050

Cyclohexanol 108-93-0 50 200

Cyclohexanone 108-94-1 50 200

Cyclohexene 110-83-8 300 1015

Cyclopentadiene 542-92-7 75 200

2, 4-D (Dichlorophenoxyacetic acid) 94-75-7 10

Decaborane 17702-41-9 0.05 0.3 X

Demeton (Systox) 8065-48-3 0.1 X

Diacetone alcohol (4-hydroxy-4-methyl-2-pentanone) 123-42-2 50 240

1,2-diaminoethane, see Ethylenediamine

Diazomethane 334-88-3 0.2 0.4

Diborane 19287-45-7 0.1 0.1

1,2-Dibromo-3-chloropropane (CBCP) 96-12-8

1,2-Dibromoethane; see Ethylene dibromide

Dibutyl phospate 107-66-4 1 5

Dibutyl phthalate 84-74-2 5

o-Dichlorobenzene 95-50-1 ^C50 ^C300

p-Dichlorobenzene 106-46-7 75 450

3,3'-Dichlorobenzidine 91-94-1

Dichlorodifluoromethane 75-71-8 1000 4950

1,3-Dichloro-5, 5-dimethyl hydantoin 118-52-5 0.2

Dichlorodiphenyltrichloroethane (DDT) 50-29-3 1 X

1,1-Dichlorethane 75-34-3 100 400

1,2-Dichloroethylene; see Ethylene dichloride

1,2-Dichloroethylene 540-59-0 200 790

Dichloroethyl ether 111-44-4 ^C15 ^C90 X

Dichloromethane, see Methylene chloride

Dichloromonofluoromethane 75-43-4 1000 4200

1,1-Dichloro-1-nitroethane 594-72-9 ^C10 ^C60

1,2-Dichloropropane, see Propylene dichloride

Dichlorotetrafluoroethane 76-14-2 1000 7000

Dieldrin 60-57-1 0.25 X

Diethylamine 109-89-7 25 75

2-Diethylamino ethanol 100-37-8 10 50 X

Diethyl ether; see Ethyl ether

Difluorodibromomethane 75-61-6 100 860

Diglycidyl ether (DGE) 2238-07-5 ^C0.5 ^C2.8

Dihydroxybenzene; see Hydroquinone

Diisobutyl ketone 108-83-8 50 290

Diisopropylamine 108-18-9 5 20 X

4-Dimethylaminoazobenzene 60-11-7

Dimethoxymethane, see Methylal

Dimethyl acetamide 127-19-5 10 35 X

Dimethylamine 124-40-3 10 18

Dimethylaminobenzene, see Xylidene

Dimethylaniline (N,N-Dimethylaniline) 121-69-7 5 25 X

Dimethylbenzene, see Xylene

Dimethyl 1, 2-dibromo-2, 2-dichloroetnyl phosphate (Dibrom) 300-76-5 3

Dimethylformamide-Skin 68-12-2 10 30 X

2, 6-Dimethyl-4-heptanone, seeDiisobutyl ketone

1, 1-Dimethylhydrazine 57-14-7 0.5 1 X

Dimethylphthalate 131-11-3 5

Dimethyl sulfate 77-78-1 1 5 X

Dinitrobenzene (all isomers)
(ortho)
(meta)
(para)
528-29-0
99-65-0
100-25-4 1 X

Dinitro-o-cresol 534-52-1 0.2 X

Dinitrotoluene 25321-14-6 1.5 X

Dioxane (Diethylene dioxide) 123-91-1 100 360 X

Diphenyl (Biphenyl) 92-52-4 0.2 1

Diphenylmethane diisocyanat; see Methylene bisphenyl isocyanate

Dipropylene glycol methyl ether 34590-94-8 100 600 X

Di-sec, octyl phthalate (Di-(2-ethylhexyl)phthalate) 117-81-7 5

Emery
Total dust
Respirable fraction 12415-34-8
15
5

Endosulfan 115-29-7 0.1 X

Endrin 72-20-8 0.1 X

Epichlorhydrin 106-89-8 5 19 X

EPN 2104-64-5 0.5 X

1, 2-Epoxypropane, see Propylene oxide

2, 3-Epoxy-1-propanol, see Glycidol

Ethanethoil, see Ethyl mercaptan

Ethanolamine 141-43-5 3 6

2-Ethoxyethanol (Cellosolve) 110-80-5 200 740 X

2-Ethoxyethyl acetate (Cellosolve acetate) 111-15-9 100 540 X

Ethyl acetate 141-78-6 400 1400 X

Ethyl acrylate 140-88-5 25 100 X

Ethyl alcohol (ethanol) 64-17-5 1000 1900

Ethylamine 75-04-7 10 18

Ethyl amyl ketone (5-methyl-3-heptanone) 541-85-5 25 130

Ethyl benzene 100-41-4 100 435

Ethyl bromide 74-96-4 200 890

Ethyl butyl keton (3-Heptanone) 106-35-4 50 230

Ethyl chloride 75-00-3 1000 2600

Ethyl ether 60-29-7 400 1200

Ethyl formate 109-94-4 100 300

Ethyl mercaptan 75-08-1 ^C10 ^C25

Ethyl silicate 78-10-4 100 850

Ethylene chlorohydrin 107-07-3 5 16 X

Ethylenediamine 107-15-3 10 25

Ethylene dibromide 106-93-4 ²

Ethylene dichloride (1,2-Dichloroethane) 107-06-2 ²

Ethylene glycol dinitrate 628-96-6 ^C0.2 ^C1 X

Ethylene glycol monomethyl ether acetate, see Methyl
cellosolve acetate

Ethyleneimine 151-56-4

Ethylene oxide 75-21-8

Ethylidine chloride, see 1, 1-Dichloroethane

N-Ethylmorpholine 100-74-3 20 94 X

Ferbam
Total dust 14484-64-1
15

Ferrovanadium dust 12604-58-9 1

Fluorides (as F) ⁴ 2.5

Fluorine 7782-41-4 0.1 0.2

Fluorotrichloromethane (Trichlorofluoromethane) 75-69-4 1000 5600

Formaldehyde 50-00-0

Formic acid 64-18-6 5 9

Furfural 98-01-1 5 20 X

Furfuryl alcohol 98-00-0 50 200

Grain dust (oat, wheat, barley) 10

Glycerin (mist)
Total dust
Respirable fraction 56-81-5
15
5

Glycidol 556-52-5 50 150

Glycol monoethyl ether, see2-Ethoxyethanol

Graphite, natural Respirable dust 7782-42-5 ³

Graphite, synthetic
Total dust
Respirable dust
15
5

Guthion�, see Azinphos methyl

Gypsum
Total dust
Respirable fraction 13397-24-5
15
5

Hafnium 7440-58-6 0.5

Heptachlor 76-44-8 0.5 X

Heptane (n-heptane) 142-82-5 500 2000

Hexacholoroethane 67-72-1 1 10 X

Hexachloronaphthalene 1335-87-1 0.2 X

n-Hexane 110-54-3 500 1800

2-Hexanone (Methyl n-butyl ketone) 591-78-6 100 410

Hexone (Methyl isobutyl ketone) 108-10-1 100 410

sec-Hexyl acetate 108-84-9 50 300

Hydrazine 302-01-2 1 1.3 X

Hydrogen bromide 10035-10-6 3 10

Hydrogen chloride 7647-01-0 ^C5 ^C7

Hydrogen cyanide 74-90-8 10 11 X

Hydrogen fluoride (as F) 7664-39-3 ²

Hydrogen peroxide 772-84-1 1 1.4

Hydrogen selenide (as Se) 7783-07-5 0.05 0.2

Hydrogen sulfied 7783-06-4 ²

Hydroquinone 123-31-9 2

Iodine 7553-56-2 ^C0.1 ^C1

Iron oxide fume 1309-37-1 10

Isomyl acetate 123-92-2 100 525

Isomyl alcohol (primary and secondary) 123-51-3 100 360

Isobutyl acetate 110-19-0 150 700

Isobutyl alcohol 78-83-1 100 300

Isophorone 78-59-1 25 140

Isopropyl acetate 108-21-4 250 950

Isopropyl alcohol 67-63-0 400 980

Isopropylamine 75-31-0 5 12

Isopropyl ether 108-20-3 500 2100

Isopropyl glycidyl ether (IGE) 4016-1-4-2 50 240

Kaolin
Total dust
Respirable fraction 1332-58-7
15
5

Ketene 463-51-4 0.5 0.9

Lead inorganic (as Pb) 7439-92-1

Limestone
Total dust
Respirable fraction 1317-65-3
15
5

Lindane 58-89-9 0.5 X

Lithium hydride 7580-67-8 0.025

L.P.G. (liquified petroleum gas) 68476-85-7 1000 1800

Magnsite
Total dust
Respirable fraction 546-93-0
15
5

Magnesium oxide fume
Total particulate 1309-48-4
15

Malathion Total dust 121-75-5
15
X

Maleic anhydride 108-31-6 0.25 1

Manganese compounds (as Mn) 7439-96-5 ^C5

Manganese fume (as Mn) 7439-96-5 ^C5

Marble
Total dust
respirable fraction 1317-65-3
15
5

Mercury (aryl and inorganic) (as Hg) 7439-97-6 ²

Mercury (organo) alkyl compounds (as Hg) 7439-97-6 ²

Mercury (vapor) (as Hg) 7439-97-6 ²

Mesityl oxide 141-79-7 25 100

Methanethiol, see Methyl mercaptan

Methoxychlor
Total dust 72-43-5
15

2-Methoxyethanol (Methyl cellosolve) 109-86-4 25 80 X

2-Methoxyethyl acetate (Methyl cellosolve acetate) 110-49-6 25 120 X

Methyl acetate 79-20-9 200 610

Methyl acetylene (propyne) 74-99-7 1000 1650

Methyl acetylene-propadiene mixture (MAPP) 1000 1800

Methyl acrylate 96-33-3 10 35 X

Methylal (dimethoxy-methane) 109-87-5 1000 3100

Methyl alcohol 67-56-1 200 260

Methylamine 74-89-5 10 12

Methyl amyl alcohol; see Methyl Isobutyl carbinol

Methyl n-amyl ketone 110-43-0 100 465

Methyl bromide 74-83-9 ^C20 ^C80 X

Methyl butyl ketone; see 2 Hexanone

Methyl cellosolve; see 2-Methoxyethanol

Methyl cellosolve acetate; see 2-Methoxyethyl acetate

Methyl chloride 74-87-3 ²

Methyl chloroform (1,1,1-Trichloroethane) 71-55-6 350 1900

Methylcyclohexane 108-87-2 500 2000

Methylcyclohexanol 25639-42-3 100 470

o-Methylcyclohexanone 583-60-8 100 460 X

Methylene chloride 75-09-2 ²

Methyl ethyl ketone (MEK); see 2-Butanone

Methyl formate 107-31-3 100 250

Methyl hydrazine (Monomethyl hydrazine) 60-34-4 ^C0.2 ^C0.35 X

Methyl iodide 74-88-4 5 28 X

Methyl isoamyl ketone 110-12-3 100 475

Methyl isobutyl carbinol 108-11-2 25 100 X

Methyl isobutyl ketone, see Hexone

Methyl isocyanate 624-83-9 0.02 0.05 X

Methyl mercaptan 74-93-1 ^C10 ^C20

Methyl methacrylate 80-62-6 100 410

Methyl propyl ketone, see 2-Pentanone

alpha Methyl styrene 98-83-9 ^C100 ^C480

Methylene bisphenyl isocyanate (MDI) 101-68-8 ^C0.02 ^C0.2

Mica; see Silicates

Molybdenum (as Mo):
Soluble compounds
Insoluble compounds
Total dust 74-39-98-7
5
15

Monomethyl aniline 100-61-8 2 9 X

Monomethyl hydrazine; see Methyl hydrazinr

TABLE 300.05-A
LIMITS FOR AIR CONTAMINANTS
Substance	CAS No.^c	ppm^a1	mg\m^3b1	Designation
Acetaldehyde	75-07-0	200	360
Acetic acid	64-19-7	10	25
Acetic anhydride	108-24-7	5	20
Acetone	67-64-1	1000	2400
Acetonitrile	75-05-8	40	70
2-Acetylaminofluorene	53-96-3
Acetylene dichloride, see 1, 2- Dichloroethylene
Acetylene tetrabromide	79-27-6	1	14
Acrolein	107-02-8	0.1	0.25
Acrylamide	79-06-1		0.3	X
Acrylonitrile	107-13-1
Aldrin	309-00-2		0.25	X
Allyl alcohol	107-18-6	2	5	X
Allyl chloride	107-05-1	1	3
Allyl glycidyl ether (AGE)	106-92-3	^C10	^C45
Allyl propyl disulfide	2179-59-1	2	12
alpha-Alumina Total dust Respirable fraction	1344-28-1		15 5
4-Aminodiphenyl	92-67-1
2-Aminoethanol, see Ethanolamine
2-Aminopyridine	504-29-0	0.5	2
Ammonia	7664-41-7	50	35
Ammonium sulfamate Total dust Respirable fraction	7773-06-0		15 5
n-Amyl acetate	628-63-7	100	525
sec-Amyl acetate	626-38-0	125	650
Aniline	62-53-3	5	19	X
Anisidine (o,p-isomers)	29191-52-4		0.5	X
Antimony and compounds (as Sb)	7440-36-0		0.5
ANTU (alph Naphthylthiourea)	86-88-4		0.3
Arsenic, inorganic compounds (as As)	7440-38-2
Arsenic, organic compounds (as As)	7440-38-2		0.5
Arsine	7784-42-1	0.05	0.2
Asbestos	⁴
Azinphos-methyl	86-50-0		0.2	X
Barium, soluble compounds (as Ba)	7440-39-3		0.5
Barium sulfate Total dust Respirable fraction	7727-43-7		15 5
Benomyl Total dust Respirable fraction	17804-35-2		15 5
Benzene^d	71-43-2
Benzidine	92-87-5
p-Benzoquinone, see Quinone
Benzo^apyrene Coal tar pitch volatiles
Benzoyl peroxide	94-36-0		5
Benzyl chloride	100-44-7	1	5
Beryllium compounds (as Be)	7440-41-7		²
Biphenyl, see Diphenyl
Bismuth telluride Undoped Total dust Respirable fraction	1304-82-1		15 5
Boron oxide Total dust	1303-86-2		15
Boron trifluoride	7637-07-2	^C1	^C3
Bromine	7726-95-6	0.1	0.7
Bromoform	75-25-2	0.5	5	X
Butadiene (1, 3-butadiene)	106-99-0	1000	2200
Butanethiol, see butyl mercaptan
2-Butanone (Methyl ethyl ketone)	78-93-3	200	590
2-Butoxyethanol	111-76-2	50	240	X
n-Butyl acetate	123-86-4	150	710
sec-Butyl acetate	105-46-4	200	950
tert-Butyl-acetate	540-88-5	200	950
n-Butyl alcohol	71-36-3	100	300
sec-Butyl alcohol	78-92-2	150	450
tert-Butyl alcohol	75-65-0	100	300
Butylamine	109-73-9	^C5	^C15	X
tert-Butyl chromate (as CrO³)	1189-85-1		C0.1	X
n-Butyl glycidyl ether (BGE)	2426-08-6	50	270
Butyl mercaptan	109-79-5	10	35
p-tert-Butyltoluene	98-51-1	10	60
Cadmium (ac Cd)	7440-43-9
Calcium Carbonate Total dust Respirable fraction	1317-65-3		15 5
Calcium hydroxide Total dust Respirable fraction	1305-62-0		15 5
Calcium oxide	1305-78-8		5
Calcium silicate Total dust Respirable fraction	1344-95-2		15 5
Calcium sulfate Total dust Respirable fraction	7778-18-9		15 5
Camphor, synthetic	76-22-2		2
Carbaryl (Sevin^R)	62-25-2		5
Carbon black	1333-86-4		3.5
Carbon dioxide	124-38-9	5000	9000
Carbon disulfide	75-15-0		²
Carbon monoxide	630-08-0	50	55
Carbon tetrachloride	56-23-5		²
Cellulose Total dust Respirable fraction	9004-34-6		15 5
Chlordane	57-74-9		0.5	X
Chlorinated camphene	8001-35-2		0.5	X
Chlorinated diphenyl oxide	55720-99-5		0.5
Chlorine	7782-50-5	^C1	^C3
Chlorine dioxide	10049-04-4	0.1	0.3
Chlorine trifluoride	7790-91-2	^C0.1	^C0.4
Chloroacetaldehyde	107-20-0	^C1	^C3
a-Chloroacetophenone (Phenacyl chloride)	532-27-4	0.05	0.3
Chlorobenzene	108-90-7	75	350
o-Chlorobenzylidene malononitrile	2698-41-1	0.05	0.4
Chlorobromomethane	74-97-5	200	1050
2-Chloro-1, 3-butadiene, see beta-Chloroprene
Chlorodiphenyl (42% Chlorine) (PCB)	53469-21-9		1	X
Chlorodiphenyl (54% Chlorine) (PCB)	11097-69-1		0.5	X
1-Chloro-2, 3-epoxypropane, see Epichlorhydrin
2-Chloroethanol, see Ethylene chlorohydrin
Chloroethylene, see Vinyl chloride
C Chloroform (trichloromethane)	67-66-3	^C50	^C240
bis(Chloromethyl) ether	542-88-1
Chloromethyl methyl ether	107-30-2
1-Chloro-1-nitropropane	600-25-9	20	100
Chloropicrin	76-06-2	0.1	07
beta-Chloroprene	126-99-8	25	90	X
2-Chloro-6 (trichloromethyl) pyridine Total dust Respirable fraction	1929-82-4		15 5
Chromic acid and chromates (as CrO³)	⁴		²
Chromium (II) compounds (as Cr)	7440-47-3		0.5
Chromium (III) compounds (as Cr)	7440-47-3		0.5
Chromium metal and insol. salts (as Cr)	7440-47-3		1
Chrysene, see Coal tar pitch volatiles
Clopidol Total dust Respirable fraction	2971-90-6		15 5
Coal dust (less than 5% SiO²), respirable fraction			³
Coal dust (greater than or equal to 5% SiO²) respirable fraction			³
Coal tar pitch volatiles (benzene soluble fraction) anthracene, BaP, phenanthrene, acridine, chrysene, pyrene	65966-93-2		0.2
Cobalt metal, fume, and dust (as Co)	7440-48-4		0.1
Coke oven emissions
Copper Fume (as Cu) Dusts and Mists (as Cu)	744-50-8		0.1 1
Cotton dust^e
Crag� herbicide (Sesone) Total dust Respirable fraction	136-78-7		15 5
Cresol, all isomers	1319-77-3	5	22	X
Crotonaldehyde	123-73-9 4170-30-3	2	6
Cumene	98-82-9	50	245	X
Cyanides (as CN)	⁴		5
Cyclohexane	110-82-7	300	1050
Cyclohexanol	108-93-0	50	200
Cyclohexanone	108-94-1	50	200
Cyclohexene	110-83-8	300	1015
Cyclopentadiene	542-92-7	75	200
2, 4-D (Dichlorophenoxyacetic acid)	94-75-7		10
Decaborane	17702-41-9	0.05	0.3	X
Demeton (Systox)	8065-48-3		0.1	X
Diacetone alcohol (4-hydroxy-4-methyl-2-pentanone)	123-42-2	50	240
1,2-diaminoethane, see Ethylenediamine
Diazomethane	334-88-3	0.2	0.4
Diborane	19287-45-7	0.1	0.1
1,2-Dibromo-3-chloropropane (CBCP)	96-12-8
1,2-Dibromoethane; see Ethylene dibromide
Dibutyl phospate	107-66-4	1	5
Dibutyl phthalate	84-74-2		5
o-Dichlorobenzene	95-50-1	^C50	^C300
p-Dichlorobenzene	106-46-7	75	450
3,3'-Dichlorobenzidine	91-94-1
Dichlorodifluoromethane	75-71-8	1000	4950
1,3-Dichloro-5, 5-dimethyl hydantoin	118-52-5		0.2
Dichlorodiphenyltrichloroethane (DDT)	50-29-3		1	X
1,1-Dichlorethane	75-34-3	100	400
1,2-Dichloroethylene; see Ethylene dichloride
1,2-Dichloroethylene	540-59-0	200	790
Dichloroethyl ether	111-44-4	^C15	^C90	X
Dichloromethane, see Methylene chloride
Dichloromonofluoromethane	75-43-4	1000	4200
1,1-Dichloro-1-nitroethane	594-72-9	^C10	^C60
1,2-Dichloropropane, see Propylene dichloride
Dichlorotetrafluoroethane	76-14-2	1000	7000
Dieldrin	60-57-1		0.25	X
Diethylamine	109-89-7	25	75
2-Diethylamino ethanol	100-37-8	10	50	X
Diethyl ether; see Ethyl ether
Difluorodibromomethane	75-61-6	100	860
Diglycidyl ether (DGE)	2238-07-5	^C0.5	^C2.8
Dihydroxybenzene; see Hydroquinone
Diisobutyl ketone	108-83-8	50	290
Diisopropylamine	108-18-9	5	20	X
4-Dimethylaminoazobenzene	60-11-7
Dimethoxymethane, see Methylal
Dimethyl acetamide	127-19-5	10	35	X
Dimethylamine	124-40-3	10	18
Dimethylaminobenzene, see Xylidene
Dimethylaniline (N,N-Dimethylaniline)	121-69-7	5	25	X
Dimethylbenzene, see Xylene
Dimethyl 1, 2-dibromo-2, 2-dichloroetnyl phosphate (Dibrom)	300-76-5		3
Dimethylformamide-Skin	68-12-2	10	30	X
2, 6-Dimethyl-4-heptanone, seeDiisobutyl ketone
1, 1-Dimethylhydrazine	57-14-7	0.5	1	X
Dimethylphthalate	131-11-3		5
Dimethyl sulfate	77-78-1	1	5	X
Dinitrobenzene (all isomers) (ortho) (meta) (para)	528-29-0 99-65-0 100-25-4		1	X
Dinitro-o-cresol	534-52-1		0.2	X
Dinitrotoluene	25321-14-6		1.5	X
Dioxane (Diethylene dioxide)	123-91-1	100	360	X
Diphenyl (Biphenyl)	92-52-4	0.2	1
Diphenylmethane diisocyanat; see Methylene bisphenyl isocyanate
Dipropylene glycol methyl ether	34590-94-8	100	600	X
Di-sec, octyl phthalate (Di-(2-ethylhexyl)phthalate)	117-81-7		5
Emery Total dust Respirable fraction	12415-34-8		15 5
Endosulfan	115-29-7		0.1	X
Endrin	72-20-8		0.1	X
Epichlorhydrin	106-89-8	5	19	X
EPN	2104-64-5		0.5	X
1, 2-Epoxypropane, see Propylene oxide
2, 3-Epoxy-1-propanol, see Glycidol
Ethanethoil, see Ethyl mercaptan
Ethanolamine	141-43-5	3	6
2-Ethoxyethanol (Cellosolve)	110-80-5	200	740	X
2-Ethoxyethyl acetate (Cellosolve acetate)	111-15-9	100	540	X
Ethyl acetate	141-78-6	400	1400	X
Ethyl acrylate	140-88-5	25	100	X
Ethyl alcohol (ethanol)	64-17-5	1000	1900
Ethylamine	75-04-7	10	18
Ethyl amyl ketone (5-methyl-3-heptanone)	541-85-5	25	130
Ethyl benzene	100-41-4	100	435
Ethyl bromide	74-96-4	200	890
Ethyl butyl keton (3-Heptanone)	106-35-4	50	230
Ethyl chloride	75-00-3	1000	2600
Ethyl ether	60-29-7	400	1200
Ethyl formate	109-94-4	100	300
Ethyl mercaptan	75-08-1	^C10	^C25
Ethyl silicate	78-10-4	100	850
Ethylene chlorohydrin	107-07-3	5	16	X
Ethylenediamine	107-15-3	10	25
Ethylene dibromide	106-93-4		²
Ethylene dichloride (1,2-Dichloroethane)	107-06-2		²
Ethylene glycol dinitrate	628-96-6	^C0.2	^C1	X
Ethylene glycol monomethyl ether acetate, see Methyl cellosolve acetate
Ethyleneimine	151-56-4
Ethylene oxide	75-21-8
Ethylidine chloride, see 1, 1-Dichloroethane
N-Ethylmorpholine	100-74-3	20	94	X
Ferbam Total dust	14484-64-1		15
Ferrovanadium dust	12604-58-9		1
Fluorides (as F)	⁴		2.5
Fluorine	7782-41-4	0.1	0.2
Fluorotrichloromethane (Trichlorofluoromethane)	75-69-4	1000	5600
Formaldehyde	50-00-0
Formic acid	64-18-6	5	9
Furfural	98-01-1	5	20	X
Furfuryl alcohol	98-00-0	50	200
Grain dust (oat, wheat, barley)			10
Glycerin (mist) Total dust Respirable fraction	56-81-5		15 5
Glycidol	556-52-5	50	150
Glycol monoethyl ether, see2-Ethoxyethanol
Graphite, natural Respirable dust	7782-42-5		³
Graphite, synthetic Total dust Respirable dust			15 5
Guthion�, see Azinphos methyl
Gypsum Total dust Respirable fraction	13397-24-5		15 5
Hafnium	7440-58-6		0.5
Heptachlor	76-44-8		0.5	X
Heptane (n-heptane)	142-82-5	500	2000
Hexacholoroethane	67-72-1	1	10	X
Hexachloronaphthalene	1335-87-1		0.2	X
n-Hexane	110-54-3	500	1800
2-Hexanone (Methyl n-butyl ketone)	591-78-6	100	410
Hexone (Methyl isobutyl ketone)	108-10-1	100	410
sec-Hexyl acetate	108-84-9	50	300
Hydrazine	302-01-2	1	1.3	X
Hydrogen bromide	10035-10-6	3	10
Hydrogen chloride	7647-01-0	^C5	^C7
Hydrogen cyanide	74-90-8	10	11	X
Hydrogen fluoride (as F)	7664-39-3		²
Hydrogen peroxide	772-84-1	1	1.4
Hydrogen selenide (as Se)	7783-07-5	0.05	0.2
Hydrogen sulfied	7783-06-4		²
Hydroquinone	123-31-9		2
Iodine	7553-56-2	^C0.1	^C1
Iron oxide fume	1309-37-1		10
Isomyl acetate	123-92-2	100	525
Isomyl alcohol (primary and secondary)	123-51-3	100	360
Isobutyl acetate	110-19-0	150	700
Isobutyl alcohol	78-83-1	100	300
Isophorone	78-59-1	25	140
Isopropyl acetate	108-21-4	250	950
Isopropyl alcohol	67-63-0	400	980
Isopropylamine	75-31-0	5	12
Isopropyl ether	108-20-3	500	2100
Isopropyl glycidyl ether (IGE)	4016-1-4-2	50	240
Kaolin Total dust Respirable fraction	1332-58-7		15 5
Ketene	463-51-4	0.5	0.9
Lead inorganic (as Pb)	7439-92-1
Limestone Total dust Respirable fraction	1317-65-3		15 5
Lindane	58-89-9		0.5	X
Lithium hydride	7580-67-8		0.025
L.P.G. (liquified petroleum gas)	68476-85-7	1000	1800
Magnsite Total dust Respirable fraction	546-93-0		15 5
Magnesium oxide fume Total particulate	1309-48-4		15
Malathion Total dust	121-75-5		15	X
Maleic anhydride	108-31-6	0.25	1
Manganese compounds (as Mn)	7439-96-5		^C5
Manganese fume (as Mn)	7439-96-5		^C5
Marble Total dust respirable fraction	1317-65-3		15 5
Mercury (aryl and inorganic) (as Hg)	7439-97-6		²
Mercury (organo) alkyl compounds (as Hg)	7439-97-6		²
Mercury (vapor) (as Hg)	7439-97-6		²
Mesityl oxide	141-79-7	25	100
Methanethiol, see Methyl mercaptan
Methoxychlor Total dust	72-43-5		15
2-Methoxyethanol (Methyl cellosolve)	109-86-4	25	80	X
2-Methoxyethyl acetate (Methyl cellosolve acetate)	110-49-6	25	120	X
Methyl acetate	79-20-9	200	610
Methyl acetylene (propyne)	74-99-7	1000	1650
Methyl acetylene-propadiene mixture (MAPP)		1000	1800
Methyl acrylate	96-33-3	10	35	X
Methylal (dimethoxy-methane)	109-87-5	1000	3100
Methyl alcohol	67-56-1	200	260
Methylamine	74-89-5	10	12
Methyl amyl alcohol; see Methyl Isobutyl carbinol
Methyl n-amyl ketone	110-43-0	100	465
Methyl bromide	74-83-9	^C20	^C80	X
Methyl butyl ketone; see 2 Hexanone
Methyl cellosolve; see 2-Methoxyethanol
Methyl cellosolve acetate; see 2-Methoxyethyl acetate
Methyl chloride	74-87-3		²
Methyl chloroform (1,1,1-Trichloroethane)	71-55-6	350	1900
Methylcyclohexane	108-87-2	500	2000
Methylcyclohexanol	25639-42-3	100	470
o-Methylcyclohexanone	583-60-8	100	460	X
Methylene chloride	75-09-2		²
Methyl ethyl ketone (MEK); see 2-Butanone
Methyl formate	107-31-3	100	250
Methyl hydrazine (Monomethyl hydrazine)	60-34-4	^C0.2	^C0.35	X
Methyl iodide	74-88-4	5	28	X
Methyl isoamyl ketone	110-12-3	100	475
Methyl isobutyl carbinol	108-11-2	25	100	X
Methyl isobutyl ketone, see Hexone
Methyl isocyanate	624-83-9	0.02	0.05	X
Methyl mercaptan	74-93-1	^C10	^C20
Methyl methacrylate	80-62-6	100	410
Methyl propyl ketone, see 2-Pentanone
alpha Methyl styrene	98-83-9	^C100	^C480
Methylene bisphenyl isocyanate (MDI)	101-68-8	^C0.02	^C0.2
Mica; see Silicates
Molybdenum (as Mo): Soluble compounds Insoluble compounds Total dust	74-39-98-7		5 15
Monomethyl aniline	100-61-8	2	9	X
Monomethyl hydrazine; see Methyl hydrazinr