| 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.) | 362.58 |
| Cobalt | 354.29 |
| Chromium | 127.98 |
| Ethylene oxide | 21.54 |
| Trichloroethylene | 15.88 |
| Nickel | 13.41 |
| Cadmium compounds | 7.98 |
| Nickel compounds | 7.51 |
| Benzene | 4.37 |
| Chloroform | 4.33 |
| Diisocyanates | 4.22 |
| Toluene diisocyanate (mixed isomers) | 3.41 |
| Polycyclic aromatic compounds | 1.70 |
| Formaldehyde | 1.45 |
| Di(2-ethylhexyl) phthalate | 0.62 |
| Antimony compounds | 0.53 |
| Certain glycol ethers | 0.52 |
| Chlorine | 0.51 |
| Xylene (mixed isomers) | 0.31 |
| Acrylonitrile | 0.21 |
| Copper | 0.16 |
| Naphthalene | 0.09 |
| Ethylbenzene | 0.07 |
| Dichloromethane (Methylene chloride) | 0.06 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.05 |
| Lead | 0.05 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.04 |
| Nitric acid | 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 |
| Triethylamine | 0.03 |
| Lead compounds | 0.03 |
| Acetonitrile | 0.03 |
| Zinc compounds | 0.02 |
| Butyl acrylate | 0.01 |
| Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.01 |
| Maleic anhydride | 0.01 |
| Cyanide compounds | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| 1,2,4-Trimethylbenzene | 0.01 |
| n-Hexane (Hexane) | 0.01 |
| Phenol | 0.01 |
| Silver compounds | 0.00 |
| Manganese | 0.00 |
| Acrylic acid | 0.00 |
| Methyl methacrylate | 0.00 |
| Pyridine | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Acetophenone | 0.00 |
| Toluene | 0.00 |
| Styrene | 0.00 |
| o-Xylene | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Mercury | 0.00 |
| Methanol | 0.00 |
| Vinyl acetate | 0.00 |
| Ethylene glycol | 0.00 |
| Silver | 0.00 |
| Propylene oxide | 0.00 |
| Cyclohexane | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Ethyl acrylate | 0.00 |
| Cumene | 0.00 |
| Formic acid | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Benzoyl peroxide | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
