| 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.) | 97.98 |
| Ethylene oxide | 96.22 |
| Cobalt | 51.87 |
| Chromium | 26.35 |
| Cadmium compounds | 13.67 |
| Nickel | 9.66 |
| Diisocyanates | 9.49 |
| Benzene | 2.05 |
| Toluene diisocyanate (mixed isomers) | 1.60 |
| Nickel compounds | 0.98 |
| Chlorine | 0.82 |
| Chloroform | 0.68 |
| Formaldehyde | 0.58 |
| Polycyclic aromatic compounds | 0.58 |
| Antimony compounds | 0.51 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.29 |
| Acrylonitrile | 0.28 |
| Di(2-ethylhexyl) phthalate | 0.23 |
| Nitric acid | 0.12 |
| Copper | 0.10 |
| Xylene (mixed isomers) | 0.06 |
| 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) | 0.06 |
| Acetonitrile | 0.06 |
| Pyridine | 0.03 |
| Certain glycol ethers | 0.03 |
| Ethylbenzene | 0.03 |
| Lead | 0.03 |
| Lead compounds | 0.02 |
| Aluminum (fume or dust) | 0.02 |
| Cyanide compounds | 0.02 |
| Naphthalene | 0.02 |
| Dichloromethane (Methylene chloride) | 0.01 |
| Acetophenone | 0.01 |
| Triethylamine | 0.01 |
| Phenol | 0.01 |
| Zinc compounds | 0.01 |
| Butyl acrylate | 0.01 |
| Maleic anhydride | 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 |
| N,N-Dimethylformamide | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Mercury compounds | 0.01 |
| Styrene | 0.00 |
| Silver compounds | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Acrylic acid | 0.00 |
| Toluene | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Methyl methacrylate | 0.00 |
| o-Xylene | 0.00 |
| Vinyl acetate | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Silver | 0.00 |
| Ethylene glycol | 0.00 |
| Mercury | 0.00 |
| Methanol | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Ethyl acrylate | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Formic acid | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
