| Ethylene oxide | 564.39 |
| Chromium | 102.33 |
| 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.) | 82.61 |
| Cobalt | 67.73 |
| Trichloroethylene | 10.42 |
| Nickel | 8.31 |
| Diisocyanates | 5.65 |
| Nickel compounds | 4.99 |
| Cadmium compounds | 3.77 |
| Lead | 3.06 |
| Chloroform | 2.79 |
| Antimony compounds | 1.96 |
| Maleic anhydride | 1.02 |
| Benzene | 0.76 |
| Dicyclopentadiene | 0.59 |
| Formaldehyde | 0.57 |
| Toluene diisocyanate (mixed isomers) | 0.47 |
| Di(2-ethylhexyl) phthalate | 0.32 |
| Dichloromethane (Methylene chloride) | 0.23 |
| Zinc compounds | 0.22 |
| Chlorine | 0.20 |
| Polycyclic aromatic compounds | 0.20 |
| Acrylonitrile | 0.12 |
| Peracetic acid | 0.10 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.10 |
| Nitric acid | 0.05 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.04 |
| Naphthalene | 0.04 |
| Xylene (mixed isomers) | 0.04 |
| Copper | 0.03 |
| Lead compounds | 0.03 |
| N,N-Dimethylformamide | 0.02 |
| Certain glycol ethers | 0.02 |
| Ethylbenzene | 0.02 |
| Triethylamine | 0.02 |
| Acetonitrile | 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) | 0.02 |
| Hydrogen cyanide | 0.02 |
| Methyl tert-butyl ether | 0.02 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.02 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Pyridine | 0.01 |
| Butyl acrylate | 0.01 |
| Toluene | 0.01 |
| Phenol | 0.01 |
| o-Xylene | 0.00 |
| Cyanide compounds | 0.00 |
| Phthalic anhydride | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Ethylene glycol | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Silver compounds | 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 |
| Methanol | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Styrene | 0.00 |
| Manganese | 0.00 |
| Vinyl acetate | 0.00 |
| Acrylic acid | 0.00 |
| Ethyl acrylate | 0.00 |
| Methyl methacrylate | 0.00 |
| Mercury | 0.00 |
| Silver | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Formic acid | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Tetrabromobisphenol A | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
