Threshold Limit Values (TLV)
Immediately Dangerous to Life and Health (IDLH)
Hycegas assumes no responsibility for the accuracy
of the information listed. As TLV and IDLH values change
frequently, the current regulations from the following
sources should be consulted for up-to-date accuracy.
Sources: TLV-TWA and TLV-STEL data extracted from 2001
Threshold Limit Valuesand Biological Exposure Indices.
Notes: All concentrations in parts per million. "C"indicates
Ceiling Limit.
Substance |
TLV
TWA |
TLV
STEL |
Acetaldehyde |
25C |
- |
Acetic Acid |
10 |
15 |
Acetone |
500 |
750 |
Acetonitrile |
40 |
60 |
Acrolein |
0.1C |
- |
Acrylonitrile |
2 |
- |
Ammonia |
25 |
35 |
Arsine |
0.05 |
- |
Benzene |
0.5 |
2.5 |
Boron Trifluoride |
1C |
ĘC |
Bromine |
0.1 |
0.2 |
1,3-Butadiene |
2 |
- |
Butane |
800 |
ĘC |
n-Butyl Acetate |
150 |
200 |
n-Butyl Acrylate |
2 |
- |
n-Butyl Alcohol |
50C |
ĘC |
Butyl Mercaptan |
0.5 |
ĘC |
Carbon Dioxide |
5,000 |
30000 |
Carbon Disulfid e |
10 |
ĘC |
Carbon Monoxide |
25 |
ĘC |
Carbon Tetrachloride |
5 |
10 |
Chlorine |
0.5 |
1 |
Chlorine Dioxide |
0.1 |
0.3 |
Chlorobenzene |
10 |
- |
Chloroform |
10 |
- |
Chloropicrin |
0.1 |
- |
Cresol |
5 |
ĘC |
Cyanogen |
10 |
- |
Cyanogen Chloride |
0.3C |
- |
Cyclohexane |
300 |
- |
Cyclohexanol |
50 |
- |
Cyclohexanone |
25 |
- |
Diborane |
0.1 |
- |
Dichlorobenzene |
10 |
- |
1,1-Dichloroethane |
100 |
- |
Dimethylamine |
5 |
15 |
Dioxane |
20 |
- |
Ethanolamine |
3 |
6 |
Ethyl Acetate |
400 |
- |
Ethyl Acrylate |
5 |
15 |
Ethyl Alcohol |
1000 |
- |
Ethylamine |
5 |
15 |
Ethyl Benzene |
100 |
125 |
Ethyl Chloride |
100 |
- |
Ethylene Dichloride |
10 |
- |
Ethylene Glycol |
100 mg/m3C |
- |
Ethylene Oxide |
1 |
- |
Ethyl Ether |
400 |
500 |
Ethyl Mercaptan |
0.5 |
- |
Fluorine |
1 |
2 |
Formaldehyde |
0.3C |
- |
Formic Acid |
5 |
10 |
Furfural |
2 |
- |
Gasoline |
300 |
500 |
Germane |
0.2 |
- |
Glutaraldehyde |
0.05C |
- |
Heptane |
400 |
500 |
Hexane |
50 |
- |
Hydrazine |
0.01 |
- |
Hydrogen Bromide |
3C |
- |
Hydrogen Chloride |
5C |
- |
Hydrogen Cyanide |
4.7C |
- |
Hydrogen Fluoride |
3C |
- |
Hydrogen Peroxide |
1 |
- |
Hydrogen Selenide |
0.05 |
- |
Hydrogen Sulfide |
10 |
15 |
Iodine |
0.1C |
- |
Isopropyl Alcohol |
400 |
500 |
Methyl Alcohol |
200 |
250 |
Methylamine |
5 |
15 |
Methyl Bromide |
1 |
- |
Methyl Chloride |
50 |
100 |
Methylene Chloride |
50 |
- |
Methyl Ethyl Ketone |
200 |
300 |
Methyl Mercaptan |
0.5 |
- |
Methyl Methacrylate |
50 |
100 |
Naphthalene |
10 |
15 |
Nitric Acid |
2 |
4 |
Nitric Oxide |
25 |
- |
Nitrobenzene |
1 |
- |
Nitrogen Dioxide |
3 |
5 |
Nitrogen Trifluoride |
10 |
- |
Nitrous Oxide |
50 |
- |
Octane |
300 |
- |
Ozone |
0.05 |
- |
Pentane |
600 |
750 |
Perchloroethylene |
25 |
100 |
Phenol |
5 |
- |
Phosgene |
0.1 |
- |
Phosphine |
0.3 |
1 |
Pyridine |
5 |
- |
Silane |
5 |
- |
Styrene |
20 |
40 |
Sulfur Dioxide |
2 |
5 |
Sulfur Hexafluoride |
1000 |
- |
Toluene |
50 |
- |
Toluene Diisocyanate |
0.005 |
0.02 |
1,2,4-Trichlorobenzene |
5C |
- |
1,1,2-Trichloroethane |
10 |
- |
Trichloroethylene |
50 |
100 |
Triethylamine |
1 |
3 |
Trimethylamine |
5 |
15 |
Trimethylbenzene |
25 |
- |
Turpentine |
100 |
- |
Vinyl Acetate |
10 |
15 |
Vinyl Bromide |
0.5 |
- |
Vinyl Chloride |
1 |
- |
Xylenes |
100 |
150 |
|