| Chromium | 162.86 |
| Formaldehyde | 74.09 |
| Nickel | 13.51 |
| Trichloroethylene | 4.18 |
| Certain glycol ethers | 0.26 |
| Benzene | 0.23 |
| Epichlorohydrin | 0.19 |
| Naphthalene | 0.17 |
| Acrylic acid | 0.14 |
| Ethylbenzene | 0.06 |
| Diisocyanates | 0.04 |
| Nitric acid | 0.03 |
| Lead compounds | 0.02 |
| Copper | 0.02 |
| n-Butyl alcohol (1-Butanol) | 0.02 |
| Xylene (mixed isomers) | 0.01 |
| Polycyclic aromatic compounds | 0.01 |
| Manganese compounds | 0.01 |
| Vinyl acetate | 0.00 |
| Dichloromethane (Methylene chloride) | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| 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) | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Hydrogen sulfide | 0.00 |
| Zinc compounds | 0.00 |
| Toluene | 0.00 |
| Lead | 0.00 |
| Methanol | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| 2,4-D | 0.00 |
| Tetrachloroethylene | 0.00 |
| Cyanide compounds | 0.00 |
| N,N-Dimethylformamide | 0.00 |
| Formic acid | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Manganese | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Ethylene glycol | 0.00 |
| Cyclohexane | 0.00 |
| Diethanolamine | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Butyraldehyde | 0.00 |
| 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.) | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
Political Economy Research Institute
