| 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.) | 143.20 |
| Chromium | 139.61 |
| Cobalt | 92.08 |
| Ethylene oxide | 88.15 |
| Cadmium compounds | 49.01 |
| Toluene diisocyanate (mixed isomers) | 23.98 |
| Nickel | 22.97 |
| Benzene | 4.80 |
| Diisocyanates | 3.20 |
| Chlorine | 2.13 |
| Polycyclic aromatic compounds | 1.35 |
| Formaldehyde | 1.00 |
| Chloroform | 0.82 |
| Di(2-ethylhexyl) phthalate | 0.76 |
| Antimony compounds | 0.52 |
| Copper | 0.43 |
| Acrylonitrile | 0.41 |
| Nickel compounds | 0.22 |
| Xylene (mixed isomers) | 0.09 |
| Ethylbenzene | 0.09 |
| Lead | 0.06 |
| Naphthalene | 0.06 |
| Nitric acid | 0.06 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.05 |
| Lead compounds | 0.05 |
| Cyanide compounds | 0.05 |
| Butyl acrylate | 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 |
| Certain glycol ethers | 0.04 |
| Acetonitrile | 0.04 |
| Triethylamine | 0.04 |
| Maleic anhydride | 0.03 |
| Dichloromethane (Methylene chloride) | 0.02 |
| Zinc compounds | 0.02 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.02 |
| Silver compounds | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Manganese | 0.01 |
| Acrylic acid | 0.01 |
| 1,2,4-Trimethylbenzene | 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 |
| Pyridine | 0.01 |
| Phenol | 0.01 |
| Methyl methacrylate | 0.01 |
| Styrene | 0.00 |
| Acetophenone | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Toluene | 0.00 |
| Vinyl acetate | 0.00 |
| Mercury compounds | 0.00 |
| Silver | 0.00 |
| Mercury | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Methanol | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Ethyl acrylate | 0.00 |
| Ethylene glycol | 0.00 |
| Propylene oxide | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 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-Butyl alcohol (1-Butanol) | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
