| Cobalt | 264.20 |
| Chromium | 153.13 |
| Formaldehyde | 65.03 |
| Nickel | 11.68 |
| Trichloroethylene | 8.29 |
| 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.) | 4.61 |
| Antimony compounds | 0.73 |
| Lead compounds | 0.65 |
| Diisocyanates | 0.63 |
| Acrylic acid | 0.44 |
| Certain glycol ethers | 0.23 |
| Epichlorohydrin | 0.22 |
| N,N-Dimethylformamide | 0.07 |
| Vinyl acetate | 0.05 |
| n-Butyl alcohol (1-Butanol) | 0.02 |
| Ethylbenzene | 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 |
| Nitric acid | 0.02 |
| Ozone | 0.01 |
| Lead | 0.01 |
| Copper | 0.01 |
| Xylene (mixed isomers) | 0.01 |
| Dichloromethane (Methylene chloride) | 0.01 |
| Benzene | 0.01 |
| Polycyclic aromatic compounds | 0.00 |
| Manganese compounds | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| Styrene | 0.00 |
| Zinc compounds | 0.00 |
| Methanol | 0.00 |
| Toluene | 0.00 |
| Tetrachloroethylene | 0.00 |
| Hydrogen sulfide | 0.00 |
| Diethanolamine | 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 |
| n-Hexane (Hexane) | 0.00 |
| Manganese | 0.00 |
| 2,4-D | 0.00 |
| Formic acid | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Cyanide compounds | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Butyraldehyde | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
