|
|
Threshold limit valuea (TLV) |
|
NFPA ratingsc |
||||
---|---|---|---|---|---|---|---|---|
Compound |
Molecular weight |
TWA (ppm) |
STEL (ppm) |
C (ppm) |
OSHAb 8-hour PEL (ppm) |
Health |
Flammability |
Instability |
Acetaldehyde |
44.05 |
|
|
25 |
200 |
2 |
4 |
2 |
Acetic acid |
60.00 |
10 |
15 |
|
10 |
3 |
2 |
0 |
Acetic anhydride |
102.9 |
5 |
|
|
5 |
3 |
2 |
1 |
Acetone |
58.05 |
500 |
750 |
|
1000 |
1 |
3 |
0 |
Acrolein |
56.06 |
|
|
0.1 |
0.1 |
4 |
3 |
3 |
Acrylic acid |
72.06 |
2 |
|
|
|
3 |
2 |
2 |
Acrylonitrile |
53.05 |
2 |
|
|
1910.1045R |
4 |
3 |
2 |
Alkane gases, C1-C4 |
– |
1000 |
|
|
|
|
|
|
Ammonia |
17.03 |
25 |
35 |
50 |
50 |
3 |
1 |
0 |
Aniline |
93.12 |
2 |
|
|
5S |
2 |
2 |
0 |
Arsenic |
74.92 |
0.01 mg/m3 |
|
|
1910.1010R |
|
|
|
Arsine |
77.95 |
0.005 |
|
|
0.05 |
4 |
4 |
2 |
Benzene |
78.11 |
0.5 |
2.5 |
|
1910.1028R |
1 |
3 |
0 |
Biphenyl |
154.20 |
0.05 |
0.15 |
|
0.2 |
1 |
1 |
0 |
Bromine |
159.81 |
0.1 |
0.2 |
|
0.1 |
3 |
0 |
0OX |
1,3-Butadiene |
54.09 |
2 |
|
|
1910.1051R |
2 |
4 |
2 |
n-Butanol |
74.12 |
20 |
|
|
100 |
3 |
3 |
0 |
sec-Butanol |
74.12 |
100 |
|
|
150 |
|
|
|
tert-Butanol |
74.12 |
100 |
|
|
100 |
|
|
|
Butene |
56.11 |
250 |
|
|
|
1 |
4 |
0 |
Butyraldehyde |
72.1 |
|
|
|
|
3 |
3 |
2 |
Butyric acid |
88.1 |
|
|
|
|
3 |
2 |
0 |
Calcium carbide |
64.1 |
|
|
|
|
3 |
3 |
2W |
Caprolactum |
113.16 |
5 mg/m3 |
|
|
|
|
|
|
Carbon dioxide |
44.01 |
5000 |
|
|
5000 |
|
|
|
Carbon disulfide |
76.14 |
1 |
|
|
|
3 |
4 |
0 |
Carbon monoxide |
28.01 |
25 |
|
|
50 |
2 |
4 |
0 |
Carbon tetrachloride |
153.84 |
5 |
|
|
|
3 |
0 |
0 |
Chlorine |
70.91 |
0.5 |
1 |
|
1 |
4 |
0 |
0OX |
Chlorine dioxide |
67.46 |
0.1 |
0.3 |
|
0.1 |
|
|
|
Chlorobenzene |
112.56 |
10 |
|
|
75 |
3 |
3 |
0 |
Chloroform |
119.38 |
10 |
|
|
(C) 50 |
2 |
0 |
0 |
Chlorosulfonic acid |
116.5 |
|
|
|
|
4 |
0 |
2W,OX |
Crotonaldehyde |
70.09 |
|
|
0.3 |
2 |
4 |
3 |
2 |
Cumene |
120.90 |
50 |
|
|
50S |
2 |
3 |
1 |
Cyclohexane |
84.16 |
100 |
|
|
300 |
1 |
3 |
0 |
Cyclohexanol |
100.16 |
50 |
|
|
50 |
1 |
2 |
0 |
Cyclohexanone |
98.14 |
20 |
50 |
|
50 |
1 |
2 |
0 |
Cyclohexene |
82.14 |
300 |
|
|
300 |
1 |
3 |
0 |
Cyclopentane |
70.13 |
600 |
|
|
|
1 |
3 |
0 |
Diborane |
27.69 |
0.1 |
|
|
0.1 |
4 |
4 |
3W |
1,1-Dichloroethane |
98.97 |
100 |
|
|
100 |
1 |
3 |
0 |
1,2-Dichloroethylene |
96.95 |
200 |
|
|
200 |
2 |
4 |
2 |
Dichloromethane = methylene chloride |
84.93 |
50 |
125 |
|
25 |
2 |
1 |
0 |
Diesel fuel |
– |
100 mg/m3 |
|
|
|
1 |
2 |
0 |
Diethylamine |
73.14 |
5 |
15 |
|
25 |
3 |
3 |
0 |
Diethyl ether |
74.1 |
|
|
|
|
1 |
4 |
1 |
Diethyl ketone |
86.13 |
200 |
300 |
|
|
1 |
3 |
0 |
Dimethylamine |
45.08 |
5 |
15 |
|
10 |
3 |
4 |
0 |
1,4-Dioxane |
88.10 |
20 |
|
|
100 |
2 |
3 |
1 |
Epichlorohydrin |
92.53 |
0.5 |
|
|
5 |
4 |
3 |
2 |
Ethyl acetate |
88.10 |
400 |
|
|
400 |
1 |
3 |
0 |
Ethyl alcohol |
46.07 |
|
1000 |
|
1000 |
2 |
3 |
0 |
Ethylamine |
45.08 |
5 |
15 |
|
10 |
3 |
4 |
0 |
Ethyl benzene |
106.16 |
100 |
125 |
|
100 |
2 |
3 |
0 |
Ethyl bromide |
108.98 |
5 |
|
|
200 |
3 |
3 |
0 |
Ethyl chloride |
64.52 |
100 |
|
|
1000 |
2 |
4 |
0 |
Ethylene |
28.05 |
200 |
|
|
|
2 |
4 |
2 |
Ethylene dichloride |
98.96 |
10 |
|
|
3 |
2 |
3 |
0 |
Ethylene glycol |
62.07 |
|
|
100 mg/m3 |
(C) 0.2 |
2 |
1 |
0 |
Ethylene oxide |
44.05 |
1 |
|
|
1910.1047R |
3 |
4 |
3 |
Ethyl ether |
74.12 |
400 |
500 |
|
400 |
1 |
4 |
1 |
Ethyl mercaptan |
62.13 |
0.5 |
|
|
(C) 10 |
2 |
4 |
1 |
Fluorine |
38.00 |
1 |
2 |
|
0.1 |
4 |
0 |
4W |
Formaldehyde |
30.03 |
|
|
0.3 |
1910.1048R |
3 |
4 |
0 |
Formic acid |
46.02 |
5 |
10 |
|
5 |
3 |
2 |
0 |
Furfural |
96.08 |
2 |
|
|
5 |
3 |
2 |
1 |
Gasoline |
– |
300 |
500 |
|
|
1 |
3 |
0 |
Heptane, all isomers |
100.20 |
400 |
500 |
|
500 |
1 |
1 |
3 |
Hexachloroethane |
236.74 |
1 |
|
|
1 |
|
|
|
n-Hexane |
86.18 |
50 |
|
|
500 |
1 |
3 |
0 |
Hexane, other isomers |
86.18 |
500 |
1000 |
|
|
|
|
|
Hydrazine |
32.05 |
0.01 |
|
|
1 |
4 |
4 |
3 |
Hydrogen bromide |
80.92 |
|
|
2 |
3 |
|
|
|
Hydrogen chloride |
36.47 |
|
|
2 |
(C) 5 |
3 |
0 |
1 |
Hydrogen cyanide |
27.03 |
|
|
4.7 |
10 |
4 |
4 |
2 |
Hydrogen fluoride |
20.01 |
0.5 |
|
2 |
|
4 |
0 |
1 |
Hydrogen peroxide |
34.02 |
1 |
|
|
1 |
|
|
|
40% to 60% |
|
|
|
|
|
3 |
0 |
1OX |
>60% |
|
|
|
|
|
3 |
0 |
3OX |
Hydrogen sulfide |
34.08 |
10 |
15 |
|
10 |
4 |
4 |
0 |
Iodine |
|
0.01 |
0.1 |
|
(C) 0.1 |
|
|
|
Isobutyl alcohol |
74.12 |
50 |
|
|
100 |
2 |
3 |
0 |
Isopropyl ether |
102.17 |
250 |
310 |
|
500 |
2 |
3 |
1 |
Kerosene |
|
200 mg/m3 |
|
|
|
2 |
2 |
0 |
Ketene |
42.04 |
1.5 |
|
|
0.5 |
|
|
|
Maleic anhydride |
98.06 |
0.1 |
|
|
0.25 |
3 |
1 |
1 |
Methacrylic acid |
86.1 |
|
|
|
|
3 |
2 |
2 |
Methyl acetate |
74.08 |
200 |
250 |
|
200 |
2 |
3 |
0 |
Methyl acetylene |
40.07 |
1000 |
|
|
1000 |
|
|
|
Methyl alcohol |
32.04 |
200 |
250 |
|
200 |
1 |
3 |
0 |
Methylamine |
31.06 |
5 |
15 |
|
10 |
3 |
4 |
0 |
Methyl bromide |
94.05 |
1 |
|
|
(C) 20S |
3 |
1 |
0 |
Methyl chloride |
50.49 |
50 |
100 |
|
|
2 |
4 |
0 |
Methyl ethyl ketone |
72.10 |
200 |
300 |
|
200 |
1 |
3 |
0 |
Methyl formate |
60.05 |
100 |
150 |
|
150 |
2 |
4 |
0 |
Methyl isocyanate |
57.05 |
0.02 |
|
|
0.02S |
4 |
3 |
2W |
Methyl mercaptan |
48.11 |
0.5 |
|
|
(C) 10 |
4 |
4 |
1 |
Naphthalene |
128.19 |
10 |
15 |
|
10 |
2 |
2 |
0 |
Nitric acid |
63.02 |
2 |
4 |
|
2 |
|
|
|
Nitric oxide |
30.01 |
25 |
|
|
25 |
|
|
|
Nitrobenzene |
123.11 |
1 |
|
|
1S |
3 |
2 |
1 |
Nitrogen dioxide |
46.01 |
3 |
5 |
|
(C) 5 |
|
|
|
Nitromethane |
61.04 |
20 |
|
|
100 |
2 |
3 |
4 |
Nitrogen oxides |
|
|
|
|
|
3 |
0 |
0OX |
Nitrous oxide |
44.02 |
50 |
|
|
|
|
|
|
Nonane |
128.26 |
200 |
|
|
|
1 |
3 |
0 |
Octane, all isomers |
114.22 |
300 |
|
|
500 |
1 |
3 |
0 |
Oxalic acid |
90.04 |
1 mg/m3 |
2 mg/m3 |
|
1 mg/m3 |
3 |
1 |
0 |
Ozone |
48.00 |
|
|
|
0.1 |
|
|
|
Heavy work: |
|
0.05 |
|
|
|
|
|
|
Moderate work: |
|
0.08 |
|
|
|
|
|
|
Light work: |
|
0.10 |
|
|
|
|
|
|
< 2 hours: |
|
0.20 |
|
|
|
|
|
|
Pentane, all isomers |
72.15 |
600 |
|
|
1000 |
1 |
4 |
0 |
Phenol |
94.11 |
5 |
|
|
5S |
4 |
2 |
0 |
Phosgene |
98.92 |
0.1 |
|
|
0.1 |
4 |
0 |
1 |
Phosphine |
34.00 |
0.3 |
|
|
0.3 |
4 |
4 |
2 |
Phosphoric acid |
98.00 |
1 mg/m3 |
3 mg/m3 |
|
1 mg/m3 |
3 |
0 |
0 |
Phthalic anhydride |
148.11 |
1 |
|
|
2 |
3 |
1 |
0 |
Picric acid |
229.11 |
0.1 mg/m3 |
|
|
0.1 mg/m3 |
3 |
4 |
4 |
Polyvinyl chloride |
|
1 mg/m3 |
|
|
|
|
|
|
Propylene |
42.08 |
500 |
|
|
|
1 |
4 |
1 |
Propylene oxide |
58.08 |
2 |
|
|
100 |
3 |
4 |
2 |
Pyridine |
79.10 |
1 |
|
|
5 |
3 |
3 |
0 |
Sodium |
22.9 |
|
|
|
|
3 |
3 |
2W |
Sodium cyanide |
49.0 |
|
|
|
|
3 |
0 |
0 |
Sodium hydroxide |
40.0 |
|
|
2 mg/m3 |
2 mg/m3 |
3 |
0 |
1 |
Styrene, monomer |
104.16 |
20 |
40 |
|
2 mg/m3 |
2 |
3 |
2 |
Sulfur dioxide, liquid |
64.07 |
|
0.25 |
|
5 |
3 |
0 |
0 |
Sulfuric acid, aqueous |
– |
0.2 mg/m3 |
|
|
1 mg/m3 |
3 |
0 |
2W |
Tetrachloroethylene |
165.80 |
25 |
100 |
|
2 mg/m3 |
2 |
0 |
0 |
Toluene |
92.13 |
20 |
|
|
2 mg/m3 |
2 |
3 |
0 |
Trichloroethylene |
131.40 |
10 |
25 |
|
2 mg/m3 |
2 |
1 |
0 |
Triethylamine |
101.19 |
1 |
3 |
|
|
3 |
3 |
0 |
Trimethylamine |
59.1 |
5 |
15 |
|
|
3 |
4 |
0 |
Turpentine |
~136 |
20 |
|
|
100 |
1 |
3 |
0 |
Vinyl acetate |
86.09 |
10 |
15 |
|
|
2 |
3 |
2 |
Vinyl bromide |
106.96 |
0.5 |
|
|
|
2 |
4 |
1 |
Vinyl chloride |
62.50 |
1 |
|
|
1910.1017R |
2 |
4 |
2 |
Vinyl fluoride |
46.05 |
1 |
|
|
|
2 |
4 |
2 |
Xylene |
106.16 |
100 |
150 |
|
100 |
2 |
3 |
0 |
aThreshold limit value (TLV) data from American Conference of Governmental Industrial Hygienists (ACGIH), 2009 TLVs and BEIs (Cincinnati, OH: ACGIH, 2009). Please check ACGIH for updated values.
bU.S. Occupational Safety and Health Administration (OSHA), www.osha.gov.
cNFPA ratings from National Fire Protection Association, Fire Protection Guide to Hazardous Materials (Quincy, MA: National Fire Protection Association, 2002).
Notes:
(C): Ceiling limit.
OX: Oxidizer.
R: These chemicals have a specific OSHA regulation. See the OSHA document referenced at www.osha.gov.
S: These chemicals have an OSHA skin designation. This means that these chemicals can be absorbed through the skin.
W: Water-reactive.
The absence of data does not indicate nonhazardous properties, just that data are not reported.