| Nickel compounds | 738.85 |
| Cobalt | 125.17 |
| Chromium | 29.10 |
| 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.) | 9.07 |
| Diisocyanates | 7.04 |
| Nickel | 5.12 |
| Benzene | 1.71 |
| Acetaldehyde | 0.97 |
| Acrylonitrile | 0.16 |
| Chlorine | 0.09 |
| Manganese | 0.08 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.08 |
| Copper | 0.06 |
| Butyl acrylate | 0.06 |
| Ethylbenzene | 0.04 |
| Formaldehyde | 0.03 |
| Nitric acid | 0.03 |
| Manganese compounds | 0.02 |
| Polycyclic aromatic compounds | 0.02 |
| Maleic anhydride | 0.02 |
| Naphthalene | 0.01 |
| Acrylic acid | 0.01 |
| Lead compounds | 0.01 |
| Triethylamine | 0.01 |
| Xylene (mixed isomers) | 0.01 |
| Lead | 0.01 |
| Styrene | 0.01 |
| Zinc compounds | 0.01 |
| Acetonitrile | 0.00 |
| Methyl methacrylate | 0.00 |
| 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) | 0.00 |
| Cyanide compounds | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Zinc (fume or dust) | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Vinyl acetate | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.00 |
| N,N-Dimethylformamide | 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 |
| Ethylene glycol | 0.00 |
| Toluene | 0.00 |
| Antimony compounds | 0.00 |
| Biphenyl | 0.00 |
| Silver | 0.00 |
| Ethyl acrylate | 0.00 |
| Certain glycol ethers | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| Mercury | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Methanol | 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 |
| Acetophenone | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
