| Ethylene oxide | 173,792.77 |
| 1,3-Butadiene | 5,172.64 |
| Polycyclic aromatic compounds | 2,501.14 |
| Benzene | 2,478.22 |
| Hydrogen cyanide | 923.20 |
| Nickel compounds | 676.24 |
| Cobalt compounds | 382.88 |
| Chromium compounds (except for chromite ore mined in the Transvaal Region of South Africa and the unreacted ore component of the chromite ore processing residue (COPR). COPR is the solid waste remaining after aqueous extraction of oxidized chromite ore that has been combined with soda ash and kiln roasted at approximately 2,000 F.) | 360.85 |
| Propylene oxide | 143.41 |
| Hydrogen sulfide | 99.51 |
| Formaldehyde | 65.66 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 58.44 |
| Naphthalene | 53.07 |
| Nitrobenzene | 45.99 |
| Benzidine | 40.90 |
| Chloroform | 39.16 |
| Acetaldehyde | 31.96 |
| Chlorine | 24.02 |
| Dicyclopentadiene | 21.30 |
| Acrylonitrile | 19.02 |
| 1,2-Dichloroethane | 16.06 |
| Ethylbenzene | 15.98 |
| Chlorophenols | 15.02 |
| Butyl acrylate | 12.19 |
| Chromium | 9.57 |
| 1,4-Dioxane | 7.54 |
| Acrolein | 7.06 |
| Thioacetamide | 6.22 |
| Hydroquinone | 5.28 |
| Hexachlorobenzene | 3.34 |
| Lead compounds | 3.27 |
| Diisocyanates | 3.11 |
| Molybdenum trioxide | 2.98 |
| Manganese compounds | 2.88 |
| Methyl tert-butyl ether | 2.87 |
| Acrylic acid | 2.62 |
| 1,1-Dimethylhydrazine | 2.37 |
| Aldrin | 2.17 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 2.14 |
| 1,1,2,2-Tetrachloroethane | 2.07 |
| Xylene (mixed isomers) | 1.93 |
| Aniline | 1.83 |
| 3,3'-Dimethylbenzidine | 1.24 |
| Urethane | 1.23 |
| Diethanolamine | 1.18 |
| Ammonia (includes anhydrous ammonia and aqueous ammonia from water dissociable ammonium salts and other sources; 10 percent of total aqueous ammonia is reportable under this listing) | 1.06 |
| Chlorine dioxide | 1.06 |
| 2,4,6-Trichlorophenol | 1.04 |
| Thiourea | 0.99 |
| n-Hexane (Hexane) | 0.97 |
| 4-Dimethylaminoazobenzene | 0.89 |
| Chloromethane | 0.88 |
| 2,4-Diaminotoluene (2,4-Toluenediamine) | 0.87 |
| 1,2,4-Trimethylbenzene | 0.73 |
| Carbonyl sulfide | 0.66 |
| Amitrole | 0.65 |
| Dioxin and dioxin-like compounds (Manufacturing; and the processing or otherwise use of dioxin and dioxin like compounds if the dioxin and dioxin like compounds are present as contaminants in a chemical and if they were created during the manufacturing of that chemical.) | 0.59 |
| Mercury compounds | 0.54 |
| Acrylamide | 0.53 |
| 1,1,2-Trichloroethane | 0.41 |
| Nickel | 0.40 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.36 |
| Methyl hydrazine | 0.33 |
| 4,4'-Methylenedianiline | 0.32 |
| Lindane | 0.30 |
| Ethylene glycol | 0.29 |
| 1,2-Diphenylhydrazine | 0.28 |
| Chlorobenzilate | 0.27 |
| Zinc compounds | 0.23 |
| Heptachlor | 0.21 |
| Lead | 0.21 |
| Propylene | 0.19 |
| Polychlorinated biphenyls | 0.19 |
| Methyl acrylate | 0.19 |
| Vanadium compounds | 0.19 |
| Ethylene | 0.18 |
| 2-Methyllactonitrile (Acetone cyanohydrin) | 0.16 |
| Styrene | 0.15 |
| Tetrachloroethylene | 0.15 |
| Trichloroethylene | 0.15 |
| Chlordane | 0.15 |
| Copper | 0.14 |
| Boron trifluoride | 0.13 |
| Benzyl chloride | 0.12 |
| Carbon tetrachloride | 0.11 |
| Manganese | 0.09 |
| Toluene diisocyanate (mixed isomers) | 0.09 |
| Cyanide compounds | 0.08 |
| 2-Methoxyethanol | 0.08 |
| Toluene-2,4-diisocyanate | 0.08 |
| Vinyl acetate | 0.08 |
| Biphenyl | 0.07 |
| Nitric acid | 0.07 |
| Pentachlorophenol | 0.07 |
| Antimony compounds | 0.06 |
| Certain glycol ethers | 0.06 |
| Toluene | 0.06 |
| 1,2,4-Trichlorobenzene | 0.06 |
| Benzo[g,h,i]perylene | 0.05 |
| Sodium fluoroacetate | 0.05 |
| Malononitrile | 0.05 |
| Pyridine | 0.05 |
| Acetonitrile | 0.04 |
| o-Toluidine | 0.04 |
| Toxaphene | 0.04 |
| 1,2-Phenylenediamine | 0.03 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.03 |
| Allyl chloride | 0.03 |
| Propionaldehyde | 0.03 |
| Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.03 |
| Methyl methacrylate | 0.03 |
| Cyclohexane | 0.03 |
| Phenol | 0.02 |
| 2-Nitropropane | 0.02 |
| Epichlorohydrin | 0.02 |
| Catechol | 0.02 |
| Aldicarb | 0.02 |
| 1,1,1,2-Tetrachloroethane | 0.02 |
| Maleic anhydride | 0.02 |
| Methanol | 0.01 |
| tert-Butyl alcohol (tert-Butanol) | 0.01 |
| Hexachloro-1,3-butadiene (Hexachlorobutadiene) | 0.01 |
| 1,4-Dichlorobenzene (p-Dichlorobenzene) | 0.01 |
| Cumene | 0.01 |
| m-Dinitrobenzene | 0.01 |
| Hexachloroethane | 0.01 |
| Carbon disulfide | 0.01 |
| o-Xylene | 0.01 |
| Allyl alcohol | 0.01 |
| Hexachlorophene | 0.01 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Mercury | 0.00 |
| Permethrin | 0.00 |
| p-Xylene | 0.00 |
| m-Xylene | 0.00 |
| Freon 113 (CFC-113) | 0.00 |
| 3,3'-Dimethoxybenzidine | 0.00 |
| Warfarin and salts | 0.00 |
| Ethylenebisdithiocarbamic acid, salts and esters | 0.00 |
| 2,4-Dichlorophenol | 0.00 |
| N,N-Dimethylformamide | 0.00 |
| Dichloromethane (Methylene chloride) | 0.00 |
| Chlorobenzene | 0.00 |
| 2,4-Dinitrophenol | 0.00 |
| Cresol (mixed isomers) | 0.00 |
| Captan | 0.00 |
| Cumene hydroperoxide | 0.00 |
| Phthalic anhydride | 0.00 |
| Propargyl alcohol | 0.00 |
| 2,4-D | 0.00 |
| Ethyl acrylate | 0.00 |
| Triethylamine | 0.00 |
| Sodium azide | 0.00 |
| Anthracene | 0.00 |
| Dicamba | 0.00 |
| Dimethoate | 0.00 |
| Sodium dicamba | 0.00 |
| m-Cresol | 0.00 |
| p-Cresol | 0.00 |
| Pentachlorobenzene | 0.00 |
| 1,2-Dichlorobenzene (o-Dichlorobenzene) | 0.00 |
| Isobutyraldehyde | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| 2,4,5-Trichlorophenol | 0.00 |
| 2-Ethoxyethanol | 0.00 |
| 1,3-Dichlorobenzene (m-Dichlorobenzene) | 0.00 |
| Methoxychlor | 0.00 |
| Formic acid | 0.00 |
| 1,1,1-Trichloroethane | 0.00 |
| o-Cresol | 0.00 |
| 4,4'-Isopropylidenediphenol | 0.00 |
| Trichlorofluoromethane (CFC-11) | 0.00 |
| Dichlorodifluoromethane (CFC-12) | 0.00 |
| Thiram | 0.00 |
| sec-Butyl alcohol (2-Butanol) | 0.00 |
| Sodium nitrite | 0.00 |
| Pendimethalin | 0.00 |
| Chloroethane | 0.00 |
| Chlorodifluoromethane (HCFC-22) | 0.00 |
| Acetamide | 0.00 |
| Acetophenone | 0.00 |
| Aluminum oxide (fibrous forms) (Alumina) | 0.00 |
| 4-Aminoazobenzene | 0.00 |
| 4-Aminobiphenyl | 0.00 |
| Atrazine | 0.00 |
| C.I. Solvent Yellow 34 (Auramine) | 0.00 |
| Benzal chloride | 0.00 |
| Bis(2-chloroethyl) ether | 0.00 |
| 1,2-Butylene oxide | 0.00 |
| Butyraldehyde | 0.00 |
| 3-Chloropropionitrile | 0.00 |
| Cyclohexanol | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| 1,2-Dibromoethane (Ethylene dibromide) | 0.00 |
| Dibutyl phthalate | 0.00 |
| 2,2-Dichloro-1,1,1-trifluoroethane (HCFC-123) | 0.00 |
| 1,4-Dichloro-2-butene | 0.00 |
| Dichlorobenzene (mixed isomers) | 0.00 |
| 1,2-Dichloroethylene | 0.00 |
| 1,3-Dichloropropylene (1,3-Dichloropropene) | 0.00 |
| Diepoxybutane | 0.00 |
| Dimethyl phthalate | 0.00 |
| Dimethyl sulfate | 0.00 |
| Dimethylamine | 0.00 |
| Dimethylcarbamoyl chloride | 0.00 |
| 2,4-Dimethylphenol | 0.00 |
| Dinitrobutyl phenol (Dinoseb) | 0.00 |
| Diphenylamine | 0.00 |
| Ethylidene dichloride (1,1-Dichloroethane) | 0.00 |
| Hydrazine | 0.00 |
| Lithium carbonate | 0.00 |
| Methyl chlorocarbonate | 0.00 |
| 2-Methylpyridine | 0.00 |
| Mustard gas | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| N-Methylolacrylamide | 0.00 |
| beta-Naphthylamine (2-Naphthalenamine) | 0.00 |
| alpha-Naphthylamine (1-Naphthalenamine) | 0.00 |
| Nicotine and salts | 0.00 |
| Osmium tetroxide | 0.00 |
| Paraldehyde | 0.00 |
| Paraquat dichloride | 0.00 |
| Pentachloroethane | 0.00 |
| p-Phenylenediamine | 0.00 |
| Piperonyl butoxide | 0.00 |
| Quinoline | 0.00 |
| Quinone | 0.00 |
| Simazine | 0.00 |
| Titanium tetrachloride | 0.00 |
| Trichloroacetyl chloride | 0.00 |
| Trypan blue | 0.00 |
| Vinyl chloride | 0.00 |
| Vinylidene chloride (1,1-Dichloroethylene) | 0.00 |
| p-Chloroaniline | 0.00 |
| trans-1,4-Dichloro-2-butene | 0.00 |
| Isoprene | 0.00 |
| Nonylphenol | 0.00 |
| 2-Propenoic acid, esters, 2-methyl-, dodecyl ester, polymer with α-fluoro-ω-[2-[(2-methyl-1-oxo-2-propen-1-yl)oxy]ethyl]poly(difluoromethylene) | 0.00 |
