| Ethylene oxide | 223.44 |
| 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.) | 90.59 |
| Cobalt | 59.84 |
| Chromium | 58.37 |
| Trichloroethylene | 10.78 |
| Nickel | 9.29 |
| Diisocyanates | 6.12 |
| Nickel compounds | 5.23 |
| Cadmium compounds | 4.67 |
| Lead | 2.94 |
| Chloroform | 2.50 |
| Antimony compounds | 2.37 |
| Maleic anhydride | 1.06 |
| Benzene | 0.99 |
| Toluene diisocyanate (mixed isomers) | 0.57 |
| Dicyclopentadiene | 0.48 |
| Di(2-ethylhexyl) phthalate | 0.27 |
| Chlorine | 0.26 |
| Zinc compounds | 0.21 |
| Polycyclic aromatic compounds | 0.20 |
| Dichloromethane (Methylene chloride) | 0.18 |
| Formaldehyde | 0.16 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.14 |
| Acrylonitrile | 0.11 |
| Nitric acid | 0.10 |
| Peracetic acid | 0.10 |
| Copper | 0.06 |
| Xylene (mixed isomers) | 0.05 |
| Lead compounds | 0.04 |
| Naphthalene | 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 |
| Certain glycol ethers | 0.02 |
| Ethylbenzene | 0.02 |
| Hydrogen cyanide | 0.02 |
| Pyridine | 0.02 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.01 |
| Triethylamine | 0.01 |
| Methyl tert-butyl ether | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Butyl acrylate | 0.01 |
| Phenol | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Cyanide compounds | 0.01 |
| Toluene | 0.01 |
| o-Xylene | 0.00 |
| Aluminum (fume or dust) | 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 |
| Phthalic anhydride | 0.00 |
| Silver compounds | 0.00 |
| Ethylene glycol | 0.00 |
| Acetophenone | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Methanol | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Styrene | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Manganese | 0.00 |
| Vinyl acetate | 0.00 |
| Acrylic acid | 0.00 |
| Ethyl acrylate | 0.00 |
| Methyl methacrylate | 0.00 |
| Mercury | 0.00 |
| Formic acid | 0.00 |
| Silver | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Cyclohexane | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Cumene | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Tetrabromobisphenol A | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
