| Cobalt | 135.79 |
| 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.) | 94.32 |
| Chromium | 77.05 |
| Ethylene oxide | 36.28 |
| Nickel | 12.14 |
| Trichloroethylene | 8.50 |
| Cadmium compounds | 7.47 |
| Diisocyanates | 7.08 |
| Nickel compounds | 4.26 |
| Lead | 2.88 |
| Benzene | 2.65 |
| Antimony compounds | 2.28 |
| Chloroform | 1.88 |
| Toluene diisocyanate (mixed isomers) | 0.84 |
| Formaldehyde | 0.53 |
| Chlorine | 0.45 |
| Di(2-ethylhexyl) phthalate | 0.44 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.39 |
| Polycyclic aromatic compounds | 0.31 |
| Zinc compounds | 0.22 |
| Acrylonitrile | 0.20 |
| Nitric acid | 0.14 |
| Copper | 0.14 |
| Dichloromethane (Methylene chloride) | 0.13 |
| Xylene (mixed isomers) | 0.08 |
| Acetonitrile | 0.07 |
| Naphthalene | 0.05 |
| Lead compounds | 0.04 |
| Ethylbenzene | 0.04 |
| Pyridine | 0.04 |
| Certain glycol ethers | 0.04 |
| 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 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.03 |
| Hydrogen cyanide | 0.02 |
| Triethylamine | 0.02 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Cyanide compounds | 0.01 |
| Aluminum (fume or dust) | 0.01 |
| Phenol | 0.01 |
| Methyl tert-butyl ether | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Acetophenone | 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 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Maleic anhydride | 0.00 |
| Silver compounds | 0.00 |
| o-Xylene | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Styrene | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Toluene | 0.00 |
| Methanol | 0.00 |
| Ethylene glycol | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Vinyl acetate | 0.00 |
| Manganese | 0.00 |
| Silver | 0.00 |
| Mercury | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Methyl methacrylate | 0.00 |
| Formic acid | 0.00 |
| Ethyl acrylate | 0.00 |
| Propylene oxide | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| Benzo[g,h,i]perylene | 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 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
