| Ethylene oxide | 126.16 |
| 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.) | 81.84 |
| Diisocyanates | 16.88 |
| Chromium | 11.86 |
| Cadmium compounds | 8.41 |
| Nickel | 6.28 |
| Toluene diisocyanate (mixed isomers) | 0.94 |
| Benzene | 0.91 |
| Chlorine | 0.49 |
| Antimony compounds | 0.42 |
| Polycyclic aromatic compounds | 0.22 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.22 |
| Nickel compounds | 0.15 |
| Di(2-ethylhexyl) phthalate | 0.12 |
| Acrylonitrile | 0.12 |
| Dichloromethane (Methylene chloride) | 0.09 |
| Nitric acid | 0.08 |
| Copper | 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 | 0.05 |
| Xylene (mixed isomers) | 0.05 |
| Formaldehyde | 0.03 |
| Certain glycol ethers | 0.03 |
| Pyridine | 0.03 |
| Lead | 0.02 |
| Zinc compounds | 0.02 |
| Lead compounds | 0.02 |
| Cyanide compounds | 0.01 |
| Ethylbenzene | 0.01 |
| Naphthalene | 0.01 |
| Methyl tert-butyl ether | 0.01 |
| Aluminum (fume or dust) | 0.01 |
| Phenol | 0.01 |
| Triethylamine | 0.00 |
| Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Acetophenone | 0.00 |
| N,N-Dimethylformamide | 0.00 |
| Styrene | 0.00 |
| Silver compounds | 0.00 |
| Maleic anhydride | 0.00 |
| o-Xylene | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Toluene | 0.00 |
| Vinyl acetate | 0.00 |
| Methyl methacrylate | 0.00 |
| Mercury compounds | 0.00 |
| Ethylene glycol | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Silver | 0.00 |
| Methanol | 0.00 |
| Mercury | 0.00 |
| Ethyl acrylate | 0.00 |
| Formic acid | 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 |
| Methyl isobutyl ketone | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
