| Cobalt | 148.30 |
| Ethylene oxide | 78.32 |
| Chromium | 72.09 |
| Nickel compounds | 66.28 |
| 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.) | 24.76 |
| Cadmium compounds | 8.59 |
| Benzene | 5.83 |
| Nickel | 4.35 |
| Acetaldehyde | 2.83 |
| Manganese | 0.85 |
| Diisocyanates | 0.80 |
| Toluene diisocyanate (mixed isomers) | 0.73 |
| Chlorine | 0.56 |
| Acrylonitrile | 0.49 |
| Formaldehyde | 0.44 |
| Styrene | 0.29 |
| Di(2-ethylhexyl) phthalate | 0.26 |
| Ethylbenzene | 0.24 |
| Butyl acrylate | 0.23 |
| Polycyclic aromatic compounds | 0.12 |
| 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) | 0.12 |
| Copper | 0.10 |
| Antimony compounds | 0.10 |
| Triethylamine | 0.08 |
| Maleic anhydride | 0.07 |
| Manganese compounds | 0.07 |
| Xylene (mixed isomers) | 0.05 |
| Acrylic acid | 0.05 |
| Naphthalene | 0.05 |
| Nitric acid | 0.04 |
| Methyl methacrylate | 0.03 |
| Lead | 0.02 |
| Cyanide compounds | 0.02 |
| Lead compounds | 0.02 |
| Vinyl acetate | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Mercury compounds | 0.01 |
| 1,2,4-Trimethylbenzene | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| n-Butyl alcohol (1-Butanol) | 0.01 |
| Acetonitrile | 0.01 |
| 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 |
| Phenol | 0.00 |
| Silver compounds | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Acetophenone | 0.00 |
| Toluene | 0.00 |
| Ethylene glycol | 0.00 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.00 |
| Silver | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Ethyl acrylate | 0.00 |
| Certain glycol ethers | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Methanol | 0.00 |
| Biphenyl | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Mercury | 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 |
