| Ethylene oxide | 30.49 |
| Chromium | 13.76 |
| 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.) | 9.87 |
| Formaldehyde | 4.42 |
| Nickel | 2.60 |
| Maleic anhydride | 1.70 |
| Diisocyanates | 1.11 |
| Cobalt | 0.99 |
| Dicyclopentadiene | 0.35 |
| Antimony compounds | 0.17 |
| Acrylonitrile | 0.13 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.05 |
| Acrylic acid | 0.04 |
| Nickel compounds | 0.03 |
| N,N-Dimethylformamide | 0.02 |
| Nitric acid | 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 |
| Lead | 0.01 |
| Acetonitrile | 0.01 |
| Butyl acrylate | 0.01 |
| Lead compounds | 0.01 |
| Pyridine | 0.01 |
| Xylene (mixed isomers) | 0.01 |
| Phthalic anhydride | 0.01 |
| Phenol | 0.01 |
| Certain glycol ethers | 0.00 |
| Vinyl acetate | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Polycyclic aromatic compounds | 0.00 |
| Trichloroethylene | 0.00 |
| Zinc compounds | 0.00 |
| Chlorine | 0.00 |
| Styrene | 0.00 |
| Toluene | 0.00 |
| Ethylene glycol | 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 |
| Dichloromethane (Methylene chloride) | 0.00 |
| Acetophenone | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Methyl methacrylate | 0.00 |
| Ethyl acrylate | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Methanol | 0.00 |
| Ethylbenzene | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Tetrachloroethylene | 0.00 |
| Silver | 0.00 |
| Formic acid | 0.00 |
| Copper | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Diethanolamine | 0.00 |
| Mercury | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Cyanide compounds | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Butyraldehyde | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
