| Ethylene oxide | 539.33 |
| 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.) | 100.97 |
| Chromium | 49.96 |
| Cobalt | 45.53 |
| Nickel | 8.41 |
| Cadmium compounds | 3.88 |
| Maleic anhydride | 3.21 |
| Diisocyanates | 3.18 |
| Lead | 2.24 |
| Antimony compounds | 2.21 |
| Dicyclopentadiene | 1.80 |
| Acrylonitrile | 0.39 |
| Peracetic acid | 0.34 |
| Toluene diisocyanate (mixed isomers) | 0.28 |
| Di(2-ethylhexyl) phthalate | 0.23 |
| Chlorine | 0.20 |
| Zinc compounds | 0.16 |
| Formaldehyde | 0.16 |
| Polycyclic aromatic compounds | 0.14 |
| Dichloromethane (Methylene chloride) | 0.11 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.10 |
| Nitric acid | 0.05 |
| Nickel compounds | 0.05 |
| Lead compounds | 0.03 |
| Butyl acrylate | 0.03 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 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 |
| Phenol | 0.02 |
| Acetonitrile | 0.02 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.02 |
| Certain glycol ethers | 0.02 |
| Hydrogen cyanide | 0.01 |
| Pyridine | 0.01 |
| Triethylamine | 0.01 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.01 |
| Phthalic anhydride | 0.01 |
| Methyl tert-butyl ether | 0.01 |
| Copper | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Cyanide compounds | 0.00 |
| Toluene | 0.00 |
| Ethylene glycol | 0.00 |
| Styrene | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Xylene (mixed isomers) | 0.00 |
| Methanol | 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 |
| o-Xylene | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Acrylic acid | 0.00 |
| Silver compounds | 0.00 |
| Acetophenone | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Ethyl acrylate | 0.00 |
| Vinyl acetate | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Methyl methacrylate | 0.00 |
| Manganese | 0.00 |
| Mercury | 0.00 |
| Formic acid | 0.00 |
| Silver | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
