| Cobalt | 282.99 |
| 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.) | 111.17 |
| Chromium | 67.63 |
| Nickel compounds | 66.73 |
| Ethylene oxide | 45.97 |
| Cadmium compounds | 11.55 |
| Nickel | 9.51 |
| Toluene diisocyanate (mixed isomers) | 4.30 |
| Benzene | 4.00 |
| Diisocyanates | 3.17 |
| Acetaldehyde | 2.86 |
| Copper | 1.10 |
| Formaldehyde | 0.75 |
| Chlorine | 0.65 |
| Di(2-ethylhexyl) phthalate | 0.52 |
| Chloroform | 0.47 |
| Lead | 0.39 |
| Antimony compounds | 0.35 |
| Polycyclic aromatic compounds | 0.33 |
| Acrylonitrile | 0.31 |
| Zinc compounds | 0.16 |
| Acetonitrile | 0.13 |
| Butyl acrylate | 0.11 |
| Ethylbenzene | 0.09 |
| Xylene (mixed isomers) | 0.08 |
| Manganese compounds | 0.07 |
| Triethylamine | 0.05 |
| Manganese | 0.05 |
| Nitric acid | 0.04 |
| Maleic anhydride | 0.04 |
| Lead compounds | 0.04 |
| Certain glycol ethers | 0.04 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.03 |
| 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) | 0.03 |
| Naphthalene | 0.03 |
| Acrylic acid | 0.02 |
| Dichloromethane (Methylene chloride) | 0.02 |
| Cyanide compounds | 0.02 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Styrene | 0.01 |
| Methyl methacrylate | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| n-Butyl alcohol (1-Butanol) | 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 |
| Mercury compounds | 0.01 |
| 1,2,4-Trimethylbenzene | 0.01 |
| Phenol | 0.00 |
| Acetophenone | 0.00 |
| Vinyl acetate | 0.00 |
| Pyridine | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Silver compounds | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Toluene | 0.00 |
| Ethylene glycol | 0.00 |
| Silver | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Mercury | 0.00 |
| Methanol | 0.00 |
| Ethyl acrylate | 0.00 |
| Propylene oxide | 0.00 |
| Biphenyl | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 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 |
