| Cobalt | 501.61 |
| Chromium | 104.26 |
| Formaldehyde | 83.25 |
| Nickel | 7.96 |
| Antimony compounds | 1.22 |
| Lead compounds | 1.15 |
| Certain glycol ethers | 0.61 |
| Epichlorohydrin | 0.55 |
| Nitric acid | 0.32 |
| Acrylic acid | 0.29 |
| 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.) | 0.22 |
| Ethylbenzene | 0.19 |
| Diisocyanates | 0.16 |
| Manganese | 0.10 |
| Lead | 0.03 |
| n-Butyl alcohol (1-Butanol) | 0.03 |
| Xylene (mixed isomers) | 0.03 |
| Benzene | 0.02 |
| Ozone | 0.02 |
| Manganese compounds | 0.02 |
| N,N-Dimethylformamide | 0.01 |
| 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 |
| Trichloroethylene | 0.01 |
| Vinyl acetate | 0.01 |
| Copper | 0.00 |
| Dichloromethane (Methylene chloride) | 0.00 |
| Toluene | 0.00 |
| Polycyclic aromatic compounds | 0.00 |
| Zinc compounds | 0.00 |
| Hydrogen sulfide | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Methyl methacrylate | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Cyanide compounds | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| 2,4-D | 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 |
| Styrene | 0.00 |
| Methanol | 0.00 |
| Tetrachloroethylene | 0.00 |
| Formic acid | 0.00 |
| Ethylene glycol | 0.00 |
| Diethanolamine | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Cyclohexane | 0.00 |
| Mercury | 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 |
| Nonylphenol Ethoxylates | 0.00 |
