| Cobalt | 172.92 |
| 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.) | 109.50 |
| Chromium | 66.22 |
| Ethylene oxide | 66.07 |
| Nickel compounds | 50.99 |
| Cadmium compounds | 30.15 |
| Nickel | 12.23 |
| Benzene | 7.58 |
| Diisocyanates | 3.59 |
| Toluene diisocyanate (mixed isomers) | 2.84 |
| Acetaldehyde | 2.75 |
| Chlorine | 1.34 |
| Di(2-ethylhexyl) phthalate | 1.13 |
| Copper | 0.62 |
| Antimony compounds | 0.58 |
| Formaldehyde | 0.54 |
| Acrylonitrile | 0.52 |
| Polycyclic aromatic compounds | 0.43 |
| Ethylbenzene | 0.14 |
| Triethylamine | 0.13 |
| Butyl acrylate | 0.10 |
| Xylene (mixed isomers) | 0.09 |
| Lead compounds | 0.08 |
| Manganese compounds | 0.07 |
| Nitric acid | 0.06 |
| Naphthalene | 0.06 |
| Lead | 0.05 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.05 |
| Maleic anhydride | 0.04 |
| 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) | 0.04 |
| Manganese | 0.04 |
| Acetonitrile | 0.04 |
| Cyanide compounds | 0.03 |
| Certain glycol ethers | 0.03 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.03 |
| Acrylic acid | 0.02 |
| Methyl methacrylate | 0.02 |
| N,N-Dimethylformamide | 0.02 |
| Zinc compounds | 0.02 |
| Styrene | 0.02 |
| Dichloromethane (Methylene chloride) | 0.01 |
| 1,2,4-Trimethylbenzene | 0.01 |
| Mercury compounds | 0.01 |
| Silver compounds | 0.01 |
| Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.01 |
| Phenol | 0.01 |
| Acetophenone | 0.01 |
| n-Butyl alcohol (1-Butanol) | 0.01 |
| Pyridine | 0.01 |
| n-Hexane (Hexane) | 0.00 |
| Vinyl acetate | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Toluene | 0.00 |
| Ethylene glycol | 0.00 |
| Silver | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Mercury | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Ethyl acrylate | 0.00 |
| Methanol | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| Biphenyl | 0.00 |
| Propylene oxide | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Formic acid | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
