| Cobalt | 280.01 |
| Nickel compounds | 77.89 |
| Chromium | 65.35 |
| 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.) | 47.41 |
| Nickel | 6.25 |
| Formaldehyde | 5.22 |
| Cadmium compounds | 2.51 |
| Benzene | 0.74 |
| Diisocyanates | 0.74 |
| Chloroform | 0.50 |
| Toluene diisocyanate (mixed isomers) | 0.38 |
| Chlorine | 0.27 |
| Polycyclic aromatic compounds | 0.26 |
| Di(2-ethylhexyl) phthalate | 0.11 |
| Dichloromethane (Methylene chloride) | 0.10 |
| Copper | 0.09 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.08 |
| Xylene (mixed isomers) | 0.08 |
| Antimony compounds | 0.07 |
| Manganese | 0.03 |
| Naphthalene | 0.02 |
| Lead | 0.02 |
| Certain glycol ethers | 0.02 |
| Ethylbenzene | 0.02 |
| Butyl acrylate | 0.02 |
| Lead compounds | 0.02 |
| Nitric acid | 0.01 |
| Phenol | 0.01 |
| Acetonitrile | 0.01 |
| Zinc compounds | 0.01 |
| Maleic anhydride | 0.01 |
| n-Hexane (Hexane) | 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) | 0.00 |
| Acrylic acid | 0.00 |
| Styrene | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Cyanide compounds | 0.00 |
| Methyl methacrylate | 0.00 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.00 |
| Toluene | 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 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Vinyl acetate | 0.00 |
| Silver compounds | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Methanol | 0.00 |
| Propylene oxide | 0.00 |
| Mercury | 0.00 |
| Biphenyl | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Ethylene glycol | 0.00 |
| Ethyl acrylate | 0.00 |
| Silver | 0.00 |
| Cyclohexane | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Cumene | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
