| Nickel compounds | 729.49 |
| Cobalt | 113.64 |
| Chromium | 36.16 |
| 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.) | 12.08 |
| Nickel | 5.70 |
| Diisocyanates | 4.53 |
| Cadmium compounds | 3.24 |
| Benzene | 2.17 |
| Acetaldehyde | 1.41 |
| Toluene diisocyanate (mixed isomers) | 0.62 |
| Chlorine | 0.30 |
| Acrylonitrile | 0.20 |
| Manganese | 0.13 |
| Di(2-ethylhexyl) phthalate | 0.12 |
| Ethylbenzene | 0.09 |
| Copper | 0.06 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.06 |
| Butyl acrylate | 0.06 |
| Antimony compounds | 0.05 |
| Manganese compounds | 0.04 |
| Nitric acid | 0.03 |
| Formaldehyde | 0.03 |
| Naphthalene | 0.02 |
| Maleic anhydride | 0.02 |
| Xylene (mixed isomers) | 0.02 |
| Styrene | 0.02 |
| Triethylamine | 0.02 |
| Lead | 0.02 |
| Polycyclic aromatic compounds | 0.02 |
| Lead compounds | 0.01 |
| Acrylic acid | 0.01 |
| Cyanide compounds | 0.01 |
| Zinc compounds | 0.01 |
| Methyl methacrylate | 0.01 |
| Mercury compounds | 0.01 |
| 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 |
| N,N-Dimethylformamide | 0.00 |
| Acetonitrile | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Zinc (fume or dust) | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Vinyl acetate | 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 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.00 |
| Silver compounds | 0.00 |
| Ethylene glycol | 0.00 |
| Toluene | 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 |
