| Ethylene oxide | 154.22 |
| 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.) | 79.55 |
| Cobalt | 50.97 |
| Diisocyanates | 31.92 |
| Chromium | 18.44 |
| Cadmium compounds | 13.80 |
| Nickel | 5.12 |
| Nickel compounds | 3.42 |
| Benzene | 1.30 |
| Toluene diisocyanate (mixed isomers) | 1.28 |
| Chlorine | 0.73 |
| Polycyclic aromatic compounds | 0.39 |
| Antimony compounds | 0.36 |
| Di(2-ethylhexyl) phthalate | 0.20 |
| Acrylonitrile | 0.16 |
| 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) | 0.14 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.14 |
| Nitric acid | 0.07 |
| Copper | 0.06 |
| Xylene (mixed isomers) | 0.04 |
| Formaldehyde | 0.04 |
| Acetonitrile | 0.03 |
| Manganese compounds | 0.03 |
| Certain glycol ethers | 0.02 |
| Lead | 0.02 |
| Ethylbenzene | 0.02 |
| Cyanide compounds | 0.02 |
| Pyridine | 0.02 |
| Lead compounds | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Naphthalene | 0.01 |
| Triethylamine | 0.01 |
| Acetophenone | 0.01 |
| Butyl acrylate | 0.01 |
| Maleic anhydride | 0.01 |
| Phenol | 0.01 |
| Aluminum (fume or dust) | 0.01 |
| Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.01 |
| Zinc compounds | 0.01 |
| Mercury compounds | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Manganese | 0.00 |
| Styrene | 0.00 |
| Silver compounds | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Acrylic acid | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Methyl methacrylate | 0.00 |
| Toluene | 0.00 |
| Vinyl acetate | 0.00 |
| Acetaldehyde | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Silver | 0.00 |
| Ethylene glycol | 0.00 |
| Mercury | 0.00 |
| Methanol | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Ethyl acrylate | 0.00 |
| Phthalic anhydride | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| Formic acid | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
