| Ethylene oxide | 83.08 |
| 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.) | 70.22 |
| Chromium | 9.41 |
| Cadmium compounds | 5.35 |
| Diisocyanates | 3.67 |
| Nickel | 3.46 |
| Benzene | 0.66 |
| Toluene diisocyanate (mixed isomers) | 0.58 |
| Chlorine | 0.35 |
| Antimony compounds | 0.21 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.09 |
| Polycyclic aromatic compounds | 0.08 |
| Acrylonitrile | 0.08 |
| Nickel compounds | 0.07 |
| Di(2-ethylhexyl) phthalate | 0.07 |
| Nitric acid | 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) | 0.03 |
| Copper | 0.03 |
| Formaldehyde | 0.02 |
| Lead | 0.02 |
| Acetonitrile | 0.02 |
| N,N-Dimethylformamide | 0.02 |
| Pyridine | 0.01 |
| Cyanide compounds | 0.01 |
| Lead compounds | 0.01 |
| Certain glycol ethers | 0.01 |
| Xylene (mixed isomers) | 0.01 |
| Ethylbenzene | 0.01 |
| Naphthalene | 0.00 |
| Zinc compounds | 0.00 |
| Phenol | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| 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 |
| Maleic anhydride | 0.00 |
| Silver compounds | 0.00 |
| Vinyl acetate | 0.00 |
| Toluene | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Ethylene glycol | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Styrene | 0.00 |
| Mercury compounds | 0.00 |
| Methanol | 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 |
| Phthalic anhydride | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Ethyl acrylate | 0.00 |
| Formic acid | 0.00 |
| Methyl methacrylate | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 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 |
