| Ethylene oxide | 43.44 |
| 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.) | 37.37 |
| Chromium | 7.23 |
| Diisocyanates | 2.60 |
| Nickel | 2.31 |
| Certain glycol ethers | 0.24 |
| Antimony compounds | 0.17 |
| Xylene (mixed isomers) | 0.07 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.06 |
| Acrylonitrile | 0.05 |
| Di(2-ethylhexyl) phthalate | 0.04 |
| Nickel compounds | 0.03 |
| Polycyclic aromatic compounds | 0.03 |
| Formaldehyde | 0.02 |
| Nitric acid | 0.02 |
| 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) | 0.02 |
| N,N-Dimethylformamide | 0.02 |
| Acetonitrile | 0.01 |
| Pyridine | 0.01 |
| Ozone | 0.01 |
| Chlorine | 0.01 |
| Lead | 0.01 |
| Phenol | 0.00 |
| Lead compounds | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Copper | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Zinc compounds | 0.00 |
| Acetophenone | 0.00 |
| Methanol | 0.00 |
| Maleic anhydride | 0.00 |
| Vinyl acetate | 0.00 |
| Toluene | 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 |
| Ethylene glycol | 0.00 |
| Styrene | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Silver | 0.00 |
| Phthalic anhydride | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Formic acid | 0.00 |
| Ethyl acrylate | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Methyl methacrylate | 0.00 |
| Mercury | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Cyanide compounds | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
