| Nickel compounds | 155.91 |
| Cobalt | 146.66 |
| 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.) | 31.75 |
| Chromium | 28.46 |
| Chlorine | 4.20 |
| Nickel | 3.84 |
| Diisocyanates | 1.44 |
| Formaldehyde | 1.09 |
| Copper | 0.93 |
| Nitric acid | 0.32 |
| Toluene diisocyanate (mixed isomers) | 0.26 |
| Lead compounds | 0.17 |
| Benzene | 0.15 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.13 |
| Polycyclic aromatic compounds | 0.08 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.05 |
| Manganese | 0.05 |
| Xylene (mixed isomers) | 0.03 |
| Dichloromethane (Methylene chloride) | 0.03 |
| Lead | 0.02 |
| Butyl acrylate | 0.01 |
| Certain glycol ethers | 0.01 |
| Antimony compounds | 0.01 |
| Acetonitrile | 0.01 |
| Zinc compounds | 0.01 |
| Maleic anhydride | 0.01 |
| Ethylbenzene | 0.00 |
| Styrene | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Acrylic acid | 0.00 |
| Naphthalene | 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 |
| Phenol | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Methyl isobutyl ketone | 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 |
| Vinyl acetate | 0.00 |
| Toluene | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Biphenyl | 0.00 |
| Mercury | 0.00 |
| Methanol | 0.00 |
| Propylene oxide | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Silver | 0.00 |
| Ethyl acrylate | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Ethylene glycol | 0.00 |
| Cumene | 0.00 |
| Methyl methacrylate | 0.00 |
| Cyclohexane | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
Political Economy Research Institute
