| 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.) | 60.91 |
| Chromium | 48.10 |
| Ethylene oxide | 45.62 |
| Trichloroethylene | 5.74 |
| Nickel | 4.75 |
| Maleic anhydride | 3.75 |
| Dicyclopentadiene | 2.50 |
| Diisocyanates | 0.91 |
| Antimony compounds | 0.46 |
| Acrylonitrile | 0.30 |
| Peracetic acid | 0.23 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.05 |
| Polycyclic aromatic compounds | 0.03 |
| Butyl acrylate | 0.02 |
| Lead compounds | 0.02 |
| Dichloromethane (Methylene chloride) | 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 |
| N,N-Dimethylformamide | 0.02 |
| Lead | 0.01 |
| Phenol | 0.01 |
| Formaldehyde | 0.01 |
| Phthalic anhydride | 0.01 |
| Acetonitrile | 0.01 |
| Pyridine | 0.01 |
| Styrene | 0.00 |
| Xylene (mixed isomers) | 0.00 |
| Ethylene glycol | 0.00 |
| Zinc compounds | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Vinyl acetate | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| Toluene | 0.00 |
| o-Xylene | 0.00 |
| Acrylic acid | 0.00 |
| Methyl methacrylate | 0.00 |
| Ethyl acrylate | 0.00 |
| Certain glycol ethers | 0.00 |
| Methanol | 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 |
| Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Cyanide compounds | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
