| Ethylene oxide | 26.07 |
| Chromium | 15.54 |
| 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.) | 14.15 |
| Trichloroethylene | 9.40 |
| Formaldehyde | 5.88 |
| Diisocyanates | 4.15 |
| Nickel | 1.85 |
| Cobalt | 1.06 |
| Maleic anhydride | 0.97 |
| Dicyclopentadiene | 0.36 |
| Antimony compounds | 0.12 |
| Certain glycol ethers | 0.07 |
| Epichlorohydrin | 0.07 |
| Acrylonitrile | 0.07 |
| Acrylic acid | 0.07 |
| Peracetic acid | 0.05 |
| N,N-Dimethylformamide | 0.04 |
| Polycyclic aromatic compounds | 0.02 |
| Dichloromethane (Methylene chloride) | 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) | 0.01 |
| Lead compounds | 0.01 |
| Xylene (mixed isomers) | 0.01 |
| Ethylbenzene | 0.01 |
| Nitric acid | 0.01 |
| Lead | 0.01 |
| Butyl acrylate | 0.01 |
| n-Butyl alcohol (1-Butanol) | 0.01 |
| Vinyl acetate | 0.00 |
| Phenol | 0.00 |
| Phthalic anhydride | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| Benzene | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Toluene | 0.00 |
| Manganese compounds | 0.00 |
| Styrene | 0.00 |
| Ethylene glycol | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| Zinc compounds | 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 |
| Methanol | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Acetonitrile | 0.00 |
| Methyl methacrylate | 0.00 |
| Ethyl acrylate | 0.00 |
| Hydrogen sulfide | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Tetrachloroethylene | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Manganese | 0.00 |
| Formic acid | 0.00 |
| Copper | 0.00 |
| 2,4-D | 0.00 |
| Diethanolamine | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Cyanide compounds | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Butyraldehyde | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
