| Cobalt | 244.28 |
| Chromium | 90.11 |
| 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.) | 77.01 |
| Trichloroethylene | 16.11 |
| Nickel | 10.96 |
| Formaldehyde | 8.67 |
| Nickel compounds | 7.59 |
| Cadmium compounds | 4.22 |
| Chloroform | 3.13 |
| Benzene | 2.80 |
| Toluene diisocyanate (mixed isomers) | 1.02 |
| Polycyclic aromatic compounds | 0.69 |
| Diisocyanates | 0.34 |
| Chlorine | 0.31 |
| Dichloromethane (Methylene chloride) | 0.22 |
| Xylene (mixed isomers) | 0.22 |
| Antimony compounds | 0.17 |
| Di(2-ethylhexyl) phthalate | 0.15 |
| Copper | 0.14 |
| Ethylbenzene | 0.05 |
| Naphthalene | 0.05 |
| Certain glycol ethers | 0.04 |
| Lead | 0.03 |
| Lead compounds | 0.02 |
| Acetonitrile | 0.02 |
| Phenol | 0.02 |
| n-Hexane (Hexane) | 0.02 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.02 |
| 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 |
| Nitric acid | 0.01 |
| Butyl acrylate | 0.01 |
| Zinc compounds | 0.01 |
| Triethylamine | 0.01 |
| Maleic anhydride | 0.01 |
| Cyanide compounds | 0.01 |
| Manganese | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Silver compounds | 0.00 |
| N,N-Dimethylformamide | 0.00 |
| Methyl methacrylate | 0.00 |
| Acrylic acid | 0.00 |
| Toluene | 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 |
| Pyridine | 0.00 |
| Styrene | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Methanol | 0.00 |
| Vinyl acetate | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Mercury | 0.00 |
| Propylene oxide | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Silver | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Ethylene glycol | 0.00 |
| Cyclohexane | 0.00 |
| Ethyl acrylate | 0.00 |
| Cumene | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Benzoyl peroxide | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
