| Ethylene oxide | 35.64 |
| 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.) | 25.62 |
| Chromium | 18.76 |
| Trichloroethylene | 5.23 |
| Maleic anhydride | 3.24 |
| Dicyclopentadiene | 3.17 |
| Nickel | 2.42 |
| Antimony compounds | 0.41 |
| Acrylonitrile | 0.27 |
| Peracetic acid | 0.21 |
| Diisocyanates | 0.15 |
| Dichloromethane (Methylene chloride) | 0.06 |
| Polycyclic aromatic compounds | 0.04 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.04 |
| N,N-Dimethylformamide | 0.02 |
| Butyl acrylate | 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) | 0.01 |
| Phthalic anhydride | 0.01 |
| Formaldehyde | 0.01 |
| Lead compounds | 0.01 |
| Acetonitrile | 0.01 |
| Lead | 0.01 |
| Phenol | 0.01 |
| Styrene | 0.00 |
| Pyridine | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Zinc compounds | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| Xylene (mixed isomers) | 0.00 |
| Ethylene glycol | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| o-Xylene | 0.00 |
| Acrylic acid | 0.00 |
| Methyl methacrylate | 0.00 |
| Vinyl acetate | 0.00 |
| Ethyl acrylate | 0.00 |
| Toluene | 0.00 |
| Methanol | 0.00 |
| Certain glycol ethers | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Manganese | 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 |
| Cyanide compounds | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
