| Cobalt | 134.15 |
| Ethylene oxide | 92.07 |
| Manganese | 66.32 |
| Nickel compounds | 63.00 |
| Chromium | 58.25 |
| 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.) | 23.68 |
| Cadmium compounds | 8.27 |
| Benzene | 4.69 |
| Nickel | 4.23 |
| Acetaldehyde | 2.78 |
| Diisocyanates | 1.01 |
| Toluene diisocyanate (mixed isomers) | 0.66 |
| Chlorine | 0.52 |
| Acrylonitrile | 0.41 |
| Ethylbenzene | 0.24 |
| Styrene | 0.22 |
| Di(2-ethylhexyl) phthalate | 0.21 |
| Butyl acrylate | 0.15 |
| 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) | 0.11 |
| Polycyclic aromatic compounds | 0.10 |
| Copper | 0.10 |
| Antimony compounds | 0.08 |
| Manganese compounds | 0.08 |
| Triethylamine | 0.06 |
| Maleic anhydride | 0.05 |
| Xylene (mixed isomers) | 0.05 |
| Formaldehyde | 0.04 |
| Nitric acid | 0.04 |
| Naphthalene | 0.04 |
| Acrylic acid | 0.03 |
| Lead | 0.02 |
| Methyl methacrylate | 0.02 |
| Cyanide compounds | 0.02 |
| Lead compounds | 0.02 |
| N,N-Dimethylformamide | 0.01 |
| Mercury compounds | 0.01 |
| n-Butyl alcohol (1-Butanol) | 0.01 |
| Vinyl acetate | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| 1,2,4-Trimethylbenzene | 0.01 |
| Acetonitrile | 0.00 |
| Zinc 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 |
| n-Hexane (Hexane) | 0.00 |
| Silver compounds | 0.00 |
| Phenol | 0.00 |
| Acetophenone | 0.00 |
| Toluene | 0.00 |
| Ethylene glycol | 0.00 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Silver | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Ethyl acrylate | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Certain glycol ethers | 0.00 |
| Biphenyl | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Mercury | 0.00 |
| Methanol | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Formic acid | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
