| Chromium | 230.17 |
| Cobalt | 210.14 |
| Hydrazine | 59.44 |
| Trichloroethylene | 29.27 |
| Nickel | 18.11 |
| Nickel compounds | 14.03 |
| Diisocyanates | 6.13 |
| Chloroform | 4.29 |
| Benzene | 2.57 |
| Naphthalene | 0.14 |
| Toluene diisocyanate (mixed isomers) | 0.11 |
| Polycyclic aromatic compounds | 0.11 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.10 |
| Ethylbenzene | 0.07 |
| Copper | 0.05 |
| Lead compounds | 0.02 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.02 |
| Triethylamine | 0.02 |
| Zinc compounds | 0.02 |
| Xylene (mixed isomers) | 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 |
| Dichloromethane (Methylene chloride) | 0.01 |
| Nitric acid | 0.01 |
| Antimony compounds | 0.01 |
| Lead | 0.01 |
| n-Hexane (Hexane) | 0.01 |
| Silver compounds | 0.01 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Manganese | 0.00 |
| Acetonitrile | 0.00 |
| Ethylene glycol | 0.00 |
| Toluene | 0.00 |
| Methyl methacrylate | 0.00 |
| N,N-Dimethylformamide | 0.00 |
| Certain glycol ethers | 0.00 |
| Cyclohexane | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Methanol | 0.00 |
| Sodium nitrite | 0.00 |
| Methyl isobutyl ketone | 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 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Formic acid | 0.00 |
| Benzoyl peroxide | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
Political Economy Research Institute
