| 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.) | 51.66 |
| Ethylene oxide | 46.73 |
| Chromium | 43.18 |
| Trichloroethylene | 5.38 |
| Nickel | 4.48 |
| Maleic anhydride | 3.29 |
| Dicyclopentadiene | 1.90 |
| Diisocyanates | 0.95 |
| Antimony compounds | 0.44 |
| Acrylonitrile | 0.25 |
| Peracetic acid | 0.20 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.05 |
| Formaldehyde | 0.03 |
| Polycyclic aromatic compounds | 0.02 |
| Dichloromethane (Methylene chloride) | 0.02 |
| Butyl acrylate | 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 |
| Nitric acid | 0.02 |
| Lead compounds | 0.02 |
| N,N-Dimethylformamide | 0.02 |
| Lead | 0.01 |
| Phenol | 0.01 |
| Phthalic anhydride | 0.01 |
| Acetonitrile | 0.01 |
| Pyridine | 0.01 |
| Xylene (mixed isomers) | 0.01 |
| Styrene | 0.00 |
| Vinyl acetate | 0.00 |
| Ethylene glycol | 0.00 |
| Zinc compounds | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| Toluene | 0.00 |
| Certain glycol ethers | 0.00 |
| o-Xylene | 0.00 |
| Acrylic acid | 0.00 |
| Methyl methacrylate | 0.00 |
| Ethyl acrylate | 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 |
| n-Hexane (Hexane) | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Manganese | 0.00 |
| Formic acid | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Cyanide compounds | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
