| 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.) | 90.35 |
| Cobalt | 63.75 |
| Chromium | 28.71 |
| Ethylene oxide | 24.34 |
| Cadmium compounds | 8.81 |
| Diisocyanates | 8.70 |
| Nickel | 8.47 |
| Hydrogen fluoride (Hydrofluoric acid) | 3.53 |
| Acetonitrile | 2.49 |
| Benzene | 1.76 |
| Pyridine | 1.47 |
| Antimony compounds | 1.39 |
| Toluene diisocyanate (mixed isomers) | 1.03 |
| Nitric acid | 0.99 |
| Chloroform | 0.63 |
| Chlorine | 0.50 |
| Di(2-ethylhexyl) phthalate | 0.32 |
| Nickel compounds | 0.32 |
| Polycyclic aromatic compounds | 0.24 |
| Acrylonitrile | 0.18 |
| Dichloromethane (Methylene chloride) | 0.11 |
| Copper | 0.09 |
| Zinc compounds | 0.08 |
| Xylene (mixed isomers) | 0.08 |
| 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 |
| Lead compounds | 0.04 |
| Certain glycol ethers | 0.03 |
| Ethylbenzene | 0.03 |
| Formaldehyde | 0.03 |
| Lead | 0.02 |
| Naphthalene | 0.02 |
| Cyanide compounds | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Phenol | 0.01 |
| Toluene | 0.01 |
| Styrene | 0.01 |
| Aluminum (fume or dust) | 0.01 |
| Methyl tert-butyl ether | 0.01 |
| Triethylamine | 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 |
| Acetophenone | 0.00 |
| N,N-Dimethylformamide | 0.00 |
| Maleic anhydride | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Vinyl acetate | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Silver compounds | 0.00 |
| o-Xylene | 0.00 |
| Methanol | 0.00 |
| Ethylene glycol | 0.00 |
| Mercury compounds | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Silver | 0.00 |
| Mercury | 0.00 |
| Ethyl acrylate | 0.00 |
| Methyl methacrylate | 0.00 |
| Cyclohexane | 0.00 |
| Formic acid | 0.00 |
| Cumene | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
