| Cobalt | 119.09 |
| 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.) | 105.22 |
| Ethylene oxide | 93.42 |
| Chromium | 75.05 |
| Cadmium compounds | 58.35 |
| Nickel compounds | 39.61 |
| Nickel | 14.73 |
| Benzene | 10.96 |
| Diisocyanates | 4.47 |
| Toluene diisocyanate (mixed isomers) | 2.61 |
| Chlorine | 2.43 |
| Acetaldehyde | 2.40 |
| Di(2-ethylhexyl) phthalate | 2.33 |
| Acrylonitrile | 1.05 |
| Antimony compounds | 0.99 |
| Polycyclic aromatic compounds | 0.76 |
| Formaldehyde | 0.55 |
| Copper | 0.36 |
| Triethylamine | 0.18 |
| Ethylbenzene | 0.16 |
| Xylene (mixed isomers) | 0.11 |
| Lead compounds | 0.10 |
| Naphthalene | 0.10 |
| Nitric acid | 0.08 |
| Manganese compounds | 0.06 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.06 |
| Cyanide compounds | 0.06 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.05 |
| 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) | 0.05 |
| Butyl acrylate | 0.05 |
| Lead | 0.04 |
| Maleic anhydride | 0.04 |
| Manganese | 0.04 |
| 1,2,4-Trimethylbenzene | 0.03 |
| Certain glycol ethers | 0.02 |
| Acetonitrile | 0.02 |
| N,N-Dimethylformamide | 0.02 |
| Silver compounds | 0.01 |
| Methyl methacrylate | 0.01 |
| Styrene | 0.01 |
| Acrylic acid | 0.01 |
| Zinc compounds | 0.01 |
| Acetophenone | 0.01 |
| Dichloromethane (Methylene chloride) | 0.01 |
| Phenol | 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 |
| Pyridine | 0.01 |
| n-Butyl alcohol (1-Butanol) | 0.01 |
| n-Hexane (Hexane) | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Toluene | 0.00 |
| Vinyl acetate | 0.00 |
| Silver | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Ethylene glycol | 0.00 |
| Ethyl acrylate | 0.00 |
| Methanol | 0.00 |
| Mercury | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| Propylene oxide | 0.00 |
| Biphenyl | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 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 |
