| Cobalt | 327.99 |
| 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.) | 115.39 |
| Chromium | 96.53 |
| Nickel compounds | 44.40 |
| Trichloroethylene | 14.47 |
| Nickel | 10.49 |
| Cadmium compounds | 5.87 |
| Benzene | 3.93 |
| Formaldehyde | 3.32 |
| Polycyclic aromatic compounds | 2.38 |
| Toluene diisocyanate (mixed isomers) | 1.91 |
| Diisocyanates | 1.71 |
| Chloroform | 1.03 |
| Chlorine | 0.42 |
| Xylene (mixed isomers) | 0.27 |
| Antimony compounds | 0.24 |
| Di(2-ethylhexyl) phthalate | 0.22 |
| Acrylonitrile | 0.21 |
| Copper | 0.16 |
| Certain glycol ethers | 0.10 |
| Dichloromethane (Methylene chloride) | 0.07 |
| Ethylbenzene | 0.05 |
| Naphthalene | 0.05 |
| Lead | 0.04 |
| Nitric acid | 0.03 |
| Lead compounds | 0.03 |
| Acetonitrile | 0.02 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.02 |
| Butyl acrylate | 0.02 |
| Manganese | 0.02 |
| Triethylamine | 0.01 |
| Zinc 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 |
| Maleic anhydride | 0.01 |
| Cyanide compounds | 0.01 |
| Phenol | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| n-Hexane (Hexane) | 0.01 |
| 1,2,4-Trimethylbenzene | 0.01 |
| Acrylic acid | 0.00 |
| N,N-Dimethylformamide | 0.00 |
| Silver compounds | 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 |
| Methyl methacrylate | 0.00 |
| Styrene | 0.00 |
| Pyridine | 0.00 |
| Acetophenone | 0.00 |
| Toluene | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Vinyl acetate | 0.00 |
| Mercury | 0.00 |
| Methanol | 0.00 |
| Silver | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Propylene oxide | 0.00 |
| Ethylene glycol | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Ethyl acrylate | 0.00 |
| Cyclohexane | 0.00 |
| Biphenyl | 0.00 |
| Cumene | 0.00 |
| Formic acid | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 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 |
