| Cobalt | 248.01 |
| Chromium | 117.18 |
| Nickel compounds | 92.51 |
| 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.) | 77.96 |
| Ethylene oxide | 52.88 |
| Cadmium compounds | 8.87 |
| Nickel | 5.92 |
| Benzene | 4.28 |
| Butyl acrylate | 2.52 |
| Acetaldehyde | 2.07 |
| Toluene diisocyanate (mixed isomers) | 1.37 |
| Diisocyanates | 0.90 |
| Maleic anhydride | 0.68 |
| Formaldehyde | 0.64 |
| Chlorine | 0.52 |
| Acrylic acid | 0.51 |
| Di(2-ethylhexyl) phthalate | 0.44 |
| Acrylonitrile | 0.39 |
| Antimony compounds | 0.18 |
| Manganese | 0.18 |
| Ethylbenzene | 0.15 |
| Polycyclic aromatic compounds | 0.14 |
| Copper | 0.14 |
| Vinyl acetate | 0.11 |
| Styrene | 0.08 |
| Xylene (mixed isomers) | 0.06 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.06 |
| Triethylamine | 0.05 |
| Manganese compounds | 0.05 |
| Nitric acid | 0.04 |
| Naphthalene | 0.03 |
| Lead | 0.03 |
| Lead compounds | 0.02 |
| Certain glycol ethers | 0.02 |
| 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) | 0.01 |
| Cyanide compounds | 0.01 |
| Dichloromethane (Methylene chloride) | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Methyl methacrylate | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Acetonitrile | 0.01 |
| Zinc compounds | 0.01 |
| 1,2,4-Trimethylbenzene | 0.01 |
| Toluene | 0.01 |
| Mercury compounds | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.00 |
| Phenol | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Acetophenone | 0.00 |
| Silver compounds | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Ethyl acrylate | 0.00 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.00 |
| Ethylene glycol | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Silver | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Mercury | 0.00 |
| Methanol | 0.00 |
| Biphenyl | 0.00 |
| Cyclohexane | 0.00 |
| Propylene oxide | 0.00 |
| Cumene | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Formic acid | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
