| Chromium | 90.55 |
| Cobalt | 75.37 |
| Formaldehyde | 12.46 |
| Trichloroethylene | 9.55 |
| Nickel | 7.54 |
| 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.) | 5.77 |
| Diisocyanates | 1.44 |
| Maleic anhydride | 0.51 |
| N,N-Dimethylformamide | 0.30 |
| Acrylic acid | 0.14 |
| Epichlorohydrin | 0.13 |
| Certain glycol ethers | 0.13 |
| Dicyclopentadiene | 0.13 |
| Nitric acid | 0.04 |
| Acrylonitrile | 0.04 |
| Peracetic acid | 0.03 |
| 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 |
| Ethylbenzene | 0.01 |
| n-Butyl alcohol (1-Butanol) | 0.01 |
| Polycyclic aromatic compounds | 0.01 |
| Vinyl acetate | 0.01 |
| Copper | 0.01 |
| Lead | 0.01 |
| Xylene (mixed isomers) | 0.01 |
| Lead compounds | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| Benzene | 0.00 |
| Butyl acrylate | 0.00 |
| Dichloromethane (Methylene chloride) | 0.00 |
| Styrene | 0.00 |
| Phenol | 0.00 |
| Phthalic anhydride | 0.00 |
| Manganese compounds | 0.00 |
| Toluene | 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 |
| Methanol | 0.00 |
| Hydrogen sulfide | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Tetrachloroethylene | 0.00 |
| Acetonitrile | 0.00 |
| Methyl methacrylate | 0.00 |
| Ethyl acrylate | 0.00 |
| Manganese | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Diethanolamine | 0.00 |
| Zinc compounds | 0.00 |
| 2,4-D | 0.00 |
| Formic acid | 0.00 |
| Cyanide compounds | 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 |
