| Chromium | 151.57 |
| Ethylene oxide | 121.00 |
| 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.) | 79.58 |
| Nickel | 23.45 |
| Maleic anhydride | 5.49 |
| Dicyclopentadiene | 2.59 |
| Diisocyanates | 1.42 |
| Antimony compounds | 1.00 |
| Acrylonitrile | 0.56 |
| Peracetic acid | 0.43 |
| Lead compounds | 0.10 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.08 |
| Phenol | 0.07 |
| Polycyclic aromatic compounds | 0.07 |
| 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) | 0.06 |
| Butyl acrylate | 0.04 |
| Nickel compounds | 0.04 |
| Formaldehyde | 0.04 |
| Dichloromethane (Methylene chloride) | 0.03 |
| Nitric acid | 0.03 |
| Lead | 0.03 |
| Phthalic anhydride | 0.02 |
| Acetonitrile | 0.02 |
| Ethylene glycol | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Pyridine | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Zinc compounds | 0.01 |
| Styrene | 0.01 |
| Xylene (mixed isomers) | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| Chlorine | 0.00 |
| Copper | 0.00 |
| Vinyl acetate | 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 |
| Certain glycol ethers | 0.00 |
| o-Xylene | 0.00 |
| Ethyl acrylate | 0.00 |
| Toluene | 0.00 |
| Methyl methacrylate | 0.00 |
| Methanol | 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 |
| Methyl isobutyl ketone | 0.00 |
| Formic acid | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Cyanide compounds | 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 |
