| Ethylene oxide | 124.02 |
| 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.) | 77.11 |
| Chromium | 72.39 |
| Nickel | 11.29 |
| Maleic anhydride | 4.96 |
| Cadmium compounds | 2.62 |
| Dicyclopentadiene | 2.12 |
| Diisocyanates | 1.62 |
| Antimony compounds | 1.15 |
| Acrylonitrile | 0.55 |
| Peracetic acid | 0.44 |
| Chlorine | 0.19 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.09 |
| Polycyclic aromatic compounds | 0.07 |
| Lead compounds | 0.05 |
| Phenol | 0.05 |
| Nitric acid | 0.04 |
| Nickel compounds | 0.04 |
| Formaldehyde | 0.04 |
| Butyl acrylate | 0.04 |
| Dichloromethane (Methylene chloride) | 0.04 |
| 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) | 0.04 |
| Lead | 0.03 |
| Acetonitrile | 0.02 |
| Phthalic anhydride | 0.02 |
| Pyridine | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Ethylene glycol | 0.01 |
| Zinc compounds | 0.01 |
| Xylene (mixed isomers) | 0.00 |
| Cyanide compounds | 0.00 |
| Styrene | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| Copper | 0.00 |
| Vinyl acetate | 0.00 |
| Certain glycol ethers | 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 |
| Acrylic acid | 0.00 |
| Methanol | 0.00 |
| o-Xylene | 0.00 |
| Toluene | 0.00 |
| Ethyl acrylate | 0.00 |
| Methyl methacrylate | 0.00 |
| Silver compounds | 0.00 |
| Acetophenone | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Mercury | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Silver | 0.00 |
| Formic acid | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Methyl isobutyl ketone | 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 |
