| Cobalt | 190.19 |
| 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.) | 164.22 |
| Chromium | 90.01 |
| Ethylene oxide | 39.31 |
| Nickel | 14.82 |
| Trichloroethylene | 10.98 |
| Cadmium compounds | 9.79 |
| Nickel compounds | 5.38 |
| Diisocyanates | 4.97 |
| Lead | 3.84 |
| Benzene | 3.63 |
| Chloroform | 3.06 |
| Toluene diisocyanate (mixed isomers) | 1.98 |
| Formaldehyde | 0.78 |
| Polycyclic aromatic compounds | 0.77 |
| Di(2-ethylhexyl) phthalate | 0.66 |
| Chlorine | 0.60 |
| Antimony compounds | 0.47 |
| Zinc compounds | 0.28 |
| Acrylonitrile | 0.24 |
| Copper | 0.21 |
| Xylene (mixed isomers) | 0.14 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.09 |
| Dichloromethane (Methylene chloride) | 0.08 |
| Certain glycol ethers | 0.07 |
| Naphthalene | 0.07 |
| Ethylbenzene | 0.05 |
| Nitric acid | 0.05 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 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) | 0.03 |
| Acetonitrile | 0.03 |
| Triethylamine | 0.03 |
| Hydrogen cyanide | 0.02 |
| Cyanide compounds | 0.02 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Pyridine | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Phenol | 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 |
| Aluminum (fume or dust) | 0.01 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Silver compounds | 0.00 |
| Maleic anhydride | 0.00 |
| Acetophenone | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Toluene | 0.00 |
| o-Xylene | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Manganese | 0.00 |
| Ethylene glycol | 0.00 |
| Mercury | 0.00 |
| Styrene | 0.00 |
| Methanol | 0.00 |
| Silver | 0.00 |
| Methyl methacrylate | 0.00 |
| Propylene oxide | 0.00 |
| Ethyl acrylate | 0.00 |
| Cyclohexane | 0.00 |
| Vinyl acetate | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Cumene | 0.00 |
| Formic acid | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
