| Cobalt | 125.27 |
| 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.) | 116.14 |
| Chromium | 44.88 |
| Ethylene oxide | 21.13 |
| Cadmium compounds | 11.08 |
| Nickel | 10.94 |
| Trichloroethylene | 8.38 |
| Diisocyanates | 7.70 |
| Nickel compounds | 4.42 |
| Benzene | 3.16 |
| Chloroform | 2.22 |
| Toluene diisocyanate (mixed isomers) | 1.32 |
| Antimony compounds | 0.90 |
| Formaldehyde | 0.64 |
| Chlorine | 0.63 |
| Di(2-ethylhexyl) phthalate | 0.54 |
| Polycyclic aromatic compounds | 0.52 |
| Acrylonitrile | 0.27 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.21 |
| Copper | 0.16 |
| Dichloromethane (Methylene chloride) | 0.11 |
| Xylene (mixed isomers) | 0.10 |
| Nitric acid | 0.09 |
| Naphthalene | 0.06 |
| Certain glycol ethers | 0.05 |
| Ethylbenzene | 0.04 |
| Acetonitrile | 0.04 |
| Lead compounds | 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) | 0.04 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.03 |
| Lead | 0.02 |
| Triethylamine | 0.02 |
| Pyridine | 0.02 |
| Aluminum (fume or dust) | 0.02 |
| Cyanide compounds | 0.02 |
| Zinc compounds | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Phenol | 0.01 |
| N,N-Dimethylformamide | 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 |
| Methyl tert-butyl ether | 0.01 |
| Acetophenone | 0.01 |
| Maleic anhydride | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Silver compounds | 0.00 |
| Styrene | 0.00 |
| Toluene | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Methyl methacrylate | 0.00 |
| o-Xylene | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Mercury compounds | 0.00 |
| Ethylene glycol | 0.00 |
| Manganese | 0.00 |
| Silver | 0.00 |
| Methanol | 0.00 |
| Mercury | 0.00 |
| Vinyl acetate | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Ethyl acrylate | 0.00 |
| Propylene oxide | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Formic acid | 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 |
