| 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.) | 185.93 |
| Cobalt | 120.82 |
| Chromium | 77.42 |
| Nickel | 29.14 |
| Cadmium compounds | 27.32 |
| Ethylene oxide | 20.17 |
| Trichloroethylene | 11.22 |
| Toluene diisocyanate (mixed isomers) | 7.87 |
| Nickel compounds | 5.53 |
| Benzene | 4.16 |
| Diisocyanates | 2.83 |
| Polycyclic aromatic compounds | 1.24 |
| Chlorine | 1.20 |
| Formaldehyde | 1.03 |
| Chloroform | 1.01 |
| Di(2-ethylhexyl) phthalate | 0.77 |
| Antimony compounds | 0.46 |
| Copper | 0.36 |
| Acrylonitrile | 0.32 |
| Xylene (mixed isomers) | 0.12 |
| Certain glycol ethers | 0.08 |
| Ethylbenzene | 0.07 |
| Lead | 0.06 |
| Naphthalene | 0.06 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.05 |
| Nitric acid | 0.05 |
| Lead compounds | 0.04 |
| Acetonitrile | 0.04 |
| Butyl acrylate | 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 |
| Cyanide compounds | 0.03 |
| Dichloromethane (Methylene chloride) | 0.03 |
| Triethylamine | 0.02 |
| Maleic anhydride | 0.02 |
| Zinc compounds | 0.02 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Manganese | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Silver compounds | 0.01 |
| Acrylic acid | 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 |
| Phenol | 0.01 |
| Pyridine | 0.01 |
| 1,2,4-Trimethylbenzene | 0.01 |
| Acetophenone | 0.01 |
| Aluminum (fume or dust) | 0.00 |
| Methyl methacrylate | 0.00 |
| Toluene | 0.00 |
| Styrene | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| o-Xylene | 0.00 |
| Vinyl acetate | 0.00 |
| Mercury compounds | 0.00 |
| Mercury | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Silver | 0.00 |
| Methanol | 0.00 |
| Ethylene glycol | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Ethyl acrylate | 0.00 |
| Propylene oxide | 0.00 |
| Cyclohexane | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Cumene | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Formic acid | 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 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
