| 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.) | 324.81 |
| Cobalt | 208.01 |
| Chromium | 96.11 |
| Ethylene oxide | 31.67 |
| Nickel | 20.51 |
| Cadmium compounds | 12.87 |
| Trichloroethylene | 11.92 |
| Nickel compounds | 5.81 |
| Diisocyanates | 4.77 |
| Benzene | 3.70 |
| Chloroform | 3.03 |
| Toluene diisocyanate (mixed isomers) | 2.94 |
| Polycyclic aromatic compounds | 0.98 |
| Formaldehyde | 0.95 |
| Chlorine | 0.72 |
| Di(2-ethylhexyl) phthalate | 0.67 |
| Antimony compounds | 0.42 |
| Acrylonitrile | 0.26 |
| Copper | 0.24 |
| Xylene (mixed isomers) | 0.15 |
| Certain glycol ethers | 0.09 |
| Lead | 0.07 |
| Naphthalene | 0.06 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.06 |
| Ethylbenzene | 0.06 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.04 |
| Nitric acid | 0.04 |
| Lead compounds | 0.04 |
| Acetonitrile | 0.03 |
| Triethylamine | 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) | 0.03 |
| Dichloromethane (Methylene chloride) | 0.03 |
| Butyl acrylate | 0.02 |
| Zinc compounds | 0.02 |
| Cyanide compounds | 0.02 |
| Maleic anhydride | 0.02 |
| Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Phenol | 0.01 |
| Acrylic acid | 0.01 |
| Silver compounds | 0.01 |
| Pyridine | 0.01 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Acetophenone | 0.00 |
| Methyl methacrylate | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Toluene | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Styrene | 0.00 |
| o-Xylene | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Mercury | 0.00 |
| Manganese | 0.00 |
| Vinyl acetate | 0.00 |
| Ethylene glycol | 0.00 |
| Methanol | 0.00 |
| Silver | 0.00 |
| Ethyl acrylate | 0.00 |
| Propylene oxide | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Formic acid | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
