| Cobalt | 139.88 |
| 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.) | 118.09 |
| Ethylene oxide | 92.72 |
| Nickel compounds | 60.90 |
| Chromium | 28.57 |
| Benzene | 16.38 |
| Cadmium compounds | 9.22 |
| Acetaldehyde | 7.71 |
| Nickel | 2.61 |
| Diisocyanates | 1.97 |
| Acrylonitrile | 1.09 |
| Toluene diisocyanate (mixed isomers) | 0.92 |
| Chlorine | 0.71 |
| Ethylbenzene | 0.43 |
| Di(2-ethylhexyl) phthalate | 0.43 |
| Formaldehyde | 0.38 |
| Triethylamine | 0.34 |
| Manganese compounds | 0.21 |
| Polycyclic aromatic compounds | 0.19 |
| Methyl methacrylate | 0.19 |
| Styrene | 0.17 |
| Antimony compounds | 0.16 |
| Naphthalene | 0.13 |
| Copper | 0.13 |
| Manganese | 0.09 |
| Nitric acid | 0.09 |
| Xylene (mixed isomers) | 0.09 |
| Butyl acrylate | 0.06 |
| Hydrogen fluoride (Hydrofluoric acid) | 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 |
| Maleic anhydride | 0.04 |
| Lead | 0.03 |
| Cyanide compounds | 0.03 |
| Lead compounds | 0.02 |
| n-Butyl alcohol (1-Butanol) | 0.02 |
| N,N-Dimethylformamide | 0.02 |
| 1,2,4-Trimethylbenzene | 0.02 |
| Certain glycol ethers | 0.02 |
| Acrylic acid | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Mercury 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 |
| Acetonitrile | 0.01 |
| n-Hexane (Hexane) | 0.01 |
| Zinc compounds | 0.01 |
| Phenol | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Acetophenone | 0.00 |
| Toluene | 0.00 |
| Ethylene glycol | 0.00 |
| Vinyl acetate | 0.00 |
| Silver compounds | 0.00 |
| Silver | 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 |
| Zinc (fume or dust) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Mercury | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| Methanol | 0.00 |
| Biphenyl | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 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 |
