| Ethylene oxide | 259.97 |
| 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.) | 90.95 |
| Cobalt | 49.34 |
| Chromium | 42.24 |
| Trichloroethylene | 9.01 |
| Nickel | 8.39 |
| Diisocyanates | 5.66 |
| Nickel compounds | 4.44 |
| Cadmium compounds | 4.19 |
| Lead | 2.29 |
| Maleic anhydride | 2.23 |
| Antimony compounds | 2.17 |
| Chloroform | 2.06 |
| Dicyclopentadiene | 1.06 |
| Toluene diisocyanate (mixed isomers) | 0.34 |
| Acrylonitrile | 0.25 |
| Chlorine | 0.24 |
| Di(2-ethylhexyl) phthalate | 0.24 |
| Peracetic acid | 0.21 |
| Zinc compounds | 0.17 |
| Formaldehyde | 0.16 |
| Polycyclic aromatic compounds | 0.14 |
| Dichloromethane (Methylene chloride) | 0.14 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.13 |
| Nitric acid | 0.13 |
| Benzene | 0.05 |
| Copper | 0.05 |
| Xylene (mixed isomers) | 0.04 |
| Lead compounds | 0.04 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.03 |
| Acetonitrile | 0.03 |
| 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 |
| Butyl acrylate | 0.02 |
| Certain glycol ethers | 0.02 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.02 |
| Pyridine | 0.02 |
| Phenol | 0.01 |
| Hydrogen cyanide | 0.01 |
| Ethylbenzene | 0.01 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.01 |
| Naphthalene | 0.01 |
| Triethylamine | 0.01 |
| Methyl tert-butyl ether | 0.01 |
| Phthalic anhydride | 0.01 |
| Cyanide compounds | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Toluene | 0.00 |
| Aluminum (fume or dust) | 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 |
| Ethylene glycol | 0.00 |
| o-Xylene | 0.00 |
| Styrene | 0.00 |
| Methanol | 0.00 |
| Acetophenone | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Vinyl acetate | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Manganese | 0.00 |
| Acrylic acid | 0.00 |
| Ethyl acrylate | 0.00 |
| Methyl methacrylate | 0.00 |
| Formic acid | 0.00 |
| Mercury | 0.00 |
| Silver | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Benzo[g,h,i]perylene | 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 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
