| Cobalt | 63.05 |
| Ethylene oxide | 20.74 |
| Chromium | 13.56 |
| Formaldehyde | 10.80 |
| 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.) | 9.56 |
| Trichloroethylene | 9.28 |
| Nickel | 1.48 |
| Maleic anhydride | 0.64 |
| Diisocyanates | 0.56 |
| Dicyclopentadiene | 0.16 |
| Epichlorohydrin | 0.09 |
| Certain glycol ethers | 0.09 |
| Acrylic acid | 0.09 |
| N,N-Dimethylformamide | 0.09 |
| Acrylonitrile | 0.05 |
| Peracetic 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) | 0.02 |
| Nitric acid | 0.01 |
| Polycyclic aromatic compounds | 0.01 |
| Ethylbenzene | 0.01 |
| Vinyl acetate | 0.01 |
| n-Butyl alcohol (1-Butanol) | 0.01 |
| Lead compounds | 0.01 |
| Xylene (mixed isomers) | 0.01 |
| Lead | 0.01 |
| Butyl acrylate | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| Phenol | 0.00 |
| Benzene | 0.00 |
| Phthalic anhydride | 0.00 |
| Manganese compounds | 0.00 |
| Dichloromethane (Methylene chloride) | 0.00 |
| Toluene | 0.00 |
| Styrene | 0.00 |
| Ethylene glycol | 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 |
| Zinc compounds | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Methanol | 0.00 |
| Hydrogen sulfide | 0.00 |
| Acetonitrile | 0.00 |
| Methyl methacrylate | 0.00 |
| Ethyl acrylate | 0.00 |
| Tetrachloroethylene | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Manganese | 0.00 |
| Copper | 0.00 |
| Diethanolamine | 0.00 |
| 2,4-D | 0.00 |
| Cyanide compounds | 0.00 |
| Formic acid | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 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 |
