Appendix 2. PEL-Sorted Listing of Chemicals for Which a PEL has been Established by OSHA
ppm in air
0.0002 Osmium tetroxide (as Os)
0.001 Nickel carbonyl (as Ni)
0.005 Isophorone diisocyanate
0.005 Pentaborane
0.005 Toluene-2,4-diisocyanate (TDI)
0.005 Trimellitic anhydride
0.01 Hexachlorocyclopentadiene
0.01 Organomercury compounds
0.01 Phosdrin (Mevinphos)
0.02 4,4-Methylenebis(2-chloroaniline)
0.02 Beryllium and its compounds
0.02 Hexachlorobutadiene
0.02 Methyl isocyanate
0.02 Tellurium hexafluoride (as Te)
0.05 alpha-Chloroacetophenone
0.05 Arsine
0.05 Chloroacetyl chloride
0.05 Decaborane
0.05 Hydrogen selenide (as Se)
0.05 Propylene glycol dinitrate
0.05 Selenium hexafluoride (as Se)
0.1 Acrolein
0.1 Bromine
0.1 Bromine pentafluoride
0.1 Cadmium Fumes
0.1 Carbon tetrabromide
0.1 Chlorine dioxide
0.1 Chloropicrin
0.1 Diborane
0.1 Diglycidyl ether (DGE)
0.1 Dimethyl sulfate
0.1 Fluorine
0.1 Hexafluoracetone
0.1 Hydrazine
0.1 Iron pentacarbonyl (as Fe)
0.1 Ozone
0.1 Perchloromethyl mercaptan
0.1 Phosgene (Carbonyl chloride)
0.1 Phosphorous oxychloride
0.1 Quinone
0.1 Stibine
0.2 Biphenyl
0.2 Cadmium dust
0.2 Diazomethane
0.2 Germanium tetrahydride
0.2 Phosphorus trichloride
0.2 Tributyl phosphate
0.25 Maleic anhydride
0.3 Phosphine
0.5 1,1-Dimethylhydrazine
0.5 2-Aminopyridine
0.5 2-Hydroxypropyl acrylate
0.5 Bromoform
0.5 Chlorine
0.5 Ethyl mercaptan
0.5 Hydrogenated terphenyls
0.5 Ketene
0.5 Methyl mercaptan
0.5 N-Methylaniline
0.5 Phenyl mercaptan
0.5 Tetramethyl succinonitrile
0.5 Butyl mercaptan
0.6 Iodoform
1 1,1,2,2-Tetrachloro-ethane
1 1,3-Dichloropropene
1 2,2-Dichloropropionic acid
1 Acetylene tetrabromide
1 Allyl chloride
1 Benzyl chloride
1 Bromacil
1 Chromic acid and chromates
1 Dibutyl phosphate
1 Dichloroethylene
1 Diethylene triamine
1 Ethylene dichloride
1 Hexachloroethane
1 Hydrogen peroxide
1 Methyl silicate
1 Methylacrylonitrile
1 Nitrobenzene
1 Phenyl ether, vapor
1 Phenyl ether-biphenyl mixture
1 Phenyl glycidyl ether (PGE)
1 Phthalic anhydride
1 Propargyl alcohol
1 Tetranitromethane
1 Thioglycolic acid
1 Trichloroacetic acid
1 Mercury
1* Boron tribromide
1* Boron trifluoride
1* p-Nitroaniline
2 1,1-Dichloro-1-nitro-ethane
2 1-Chloro-1-nitropropane
2 2-N-Dibutylamino-ethanol
2 Allyl alcohol
2 Allyl propyl disulfide
2 Aniline and homologs
2 Carbonyl fluoride
2 Chloroform (Trichloromethane)
2 Crotonaldehyde
2 Epichlorohydrin
2 Furfural
2 m-Nitrotoluene
2 m-Toluidine
2 Methyl 2-cyanoacrylate
2 Methyl iodide
2 N-Isopropylaniline
2 Nitric acid
2 p-Toluidine
2 Propylene imine
2 Sulfur dioxide
2 Trimethyl phosphite
2 Xylidine
3 Diethanolamine
3 Ethanolamine
3 Formaldehyde
3 Hydrogen fluoride
3 Perchloryl fluoride
3* Hydrogen bromide
4 Isophorone
5 2-Hexanone
5 Catechol (Pyrocatechol)
5 Cresol. all isomers
5 Dichloroethyl ether
5 Dicyclopentadiene
5 Diisopropylamine
5 Ethyl acrylate
5 Formic acid
5 Isopropylamine
5 Methyl bromide
5 N-Ethylmorpholine
5 N,N-Dimethylaniline
5 n-Butyl lactate
5 o-sec-Butylphenol
5 o-Toluidine
5 Phenol
5 Phenylhydrazine
5 Silicon tetrahydride
5 Sulfuryl fluoride
5 Vinyl bromide
5 Pyridine
5*(C) Butylamine
5* Acetic anhydride
5*(C) Hydrogen chloride
5*(C) Nitrogen dioxide
10 beta-Chloroprene
10 1,1,2-Trichloroethane
10 1,2,3-Trichloropropane
10 2-Diethylaminoethanol
10 2-Nitropropane
10 Acetic acid
10 Acrylic acid
10 Benzene
10 Butyl acrylate
10 Carbon Tetrachloride
10 Cyanogen
10 Cyclohexylamine
10 Dichloromonofluoro-methane
10 Diethylamine
10 Dimethyl acetamide
10 Dimethylamine
10 Divinyl benzene
10 Ethyl silicate
10 Ethylamine
10 Ethylenediamine
10 Furfuryl alcohol
10* Hydrogen cyanide
10 Indene
10 Methyl acrylate
10 Methylamine
10 Napthalene
10 Nitrogen trifluoride
10 p-t-Butyltoluene
10 Propionic acid
10 Resorcinol
10 Triethylamine
10 Trimethylamine
10 Vinyl acetate
10 Vinyl cyclohexene dioxide
10 Dimethylformamide
15 Mesityl oxide
20 Carbon disulfide
20 Ethylene dibromide
20 Formamide
20 Hydrogen sulfide
20 Methacrylic acid
20 Morpholine
20 Propylene oxide
25 1-Nitropropane
25 2-Butoxyethanol
25 2-Isopropoxyethanol
25 2-Methoxyethanol (Me cellosolve)
25 Cyclohexanone
25 Diisobutyl ketone
25 Dioxane
25 Ethyl amyl ketone
25 Glycidol
25 Methyl cellosolve acetate
25 Methyl isobutyl carbinol
25 n-Butyl glycidyl ether (BGE)
25 n-Propyl nitrate
25 Nitric oxide
25 Trimethyl benzene
35 Carbon monoxide
40 Acetonitrile
50 alpha-Methyl styrene
50 Cumene
50 Cyclohexanol
50 Diacetone alcohol
50 Dipropyl ketone
50 Ethlyene dichloride
50 Ethyl butyl ketone
50 Isobutyl alcohol
50 Isoctyl alcohol
50 Isopropyl glycidyl ether (IGE)
50 Methyl isoamyl ketone
50 Methyl isobutyl ketone
50 Methylcyclohexanol
50 n-Hexane
50 o-Chlorostyrene
50 o-Chlorotoluene
50 o-Methylcyclohexanone
50 sec-Hexyl acetate
50 Trichloroethylene
50 Valeraldehyde
50* Ammonia
75 Chlorobenzene
75 Cyclopentadiene
75 p-Dichlorobenzene
75 Propylene dichloride
100 1,1-Dichloroethane
100 2-Ethoxyethyl acetate(CellosolveAc)
100 Acetaldehyde
100 Difluorodibromomethane
100 Dipropylene glycol methyl ether
100 Ethyl benzene
100 Ethyl formate
100 Isoamyl acetate
100 Isoamyl alcohol (pri, sec)
100 Methyl chloride
100 Methyl formate
100 Methyl methacrylate
100 Methyl n-amyl ketone
100 n-Amyl acetate
100 Naphtha (Coal tar)
100 Nitroethane
100 Nitromethane
100 Propylene glycol monomethyl ether
100 sec-Butyl alcohol
100 Stoddard solvent
100 Styrene
100 tert-Butyl alcohol
100 Tetrachloroethylene
100 Turpentine
100 Vinyl toluene
100 Xylenes (o-, m-, p- isomers)
100* n-Butyl alcohol
125 sec-Amyl acetate
150 Isobutyl acetate
150 n-Butyl acetate
200 1,2-Dichloroethylene
200 2-Butanone (Methyl ethyl ketone)
200 2-Ethoxyethanol
200 2-Pentanone (Methyl propyl ketone)
200 Chlorobromomethane
200 Diethyl ketone
200 Ethyl bromide
200 Methyl acetate
200 Methyl alcohol
200 Methyl isopropyl ketone
200 n-Propyl acetate
200 n-Propyl alcohol
200 Nonane
200 sec-Butyl acetate
200 tert-Butyl acetate
200 Tetrahydrofuran
200 Toluene
250 Isopropyl acetate
300 Cyclohexane
300 Cyclohexene
300 Gasoline
300 Octane
350 1,1,1,-Trichloroethane
400 Ethyl acetate
400 Ethyl ether
400 Heptane
400 Isopropyl alcohol
400 Methylcyclohexane
400 Petroleum distillates (Naphtha)
500 1,1,1,2-Tetrachloro-2,2-diF-ethane
500 1,1,2,2-Tetrachloro-1,2-diF-ethane
500 Hexane isomers
500 Isopropyl ether
500 Methylene chloride
600 Cyclopentane
600 Pentane
750 Acetone
800 Butane
1000 1,1,2-Trichloro-1,2,2-triF-ethane
1000 Butadiene (1,3-Butadiene)
1000 Chlorodifluoromethane
1000 Chloropentafluoroethane
1000 Dichlorodifluoro-methane
1000 Dichlorotetrafluoroethane
1000 Dimethoxymethane
1000 Ethyl alcohol
1000 Ethyl chloride
1000 LPG (Liquified petroleum gas)
1000 Methyl acetylene (Propyne)
1000 Methyl acetylene propadiene mixture
1000 Propane
1000 Sulfur hexafluoride
1000 Trifluorobromomethane
1000* Fluorotrichloromethane
10000 Carbon dioxide
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