| Ethylene oxide | 40.07 |
| Chromium | 20.31 |
| 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.) | 18.24 |
| Trichloroethylene | 5.11 |
| Nickel | 3.50 |
| Formaldehyde | 2.67 |
| Maleic anhydride | 1.81 |
| Diisocyanates | 1.05 |
| Dicyclopentadiene | 0.66 |
| Antimony compounds | 0.36 |
| Acrylonitrile | 0.11 |
| Peracetic acid | 0.09 |
| Xylene (mixed isomers) | 0.07 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.05 |
| Acrylic acid | 0.05 |
| Vinyl acetate | 0.04 |
| N,N-Dimethylformamide | 0.02 |
| Nitric acid | 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 |
| Polycyclic aromatic compounds | 0.02 |
| Lead compounds | 0.01 |
| Toluene | 0.01 |
| Lead | 0.01 |
| Acetonitrile | 0.01 |
| Phenol | 0.01 |
| Butyl acrylate | 0.01 |
| Pyridine | 0.01 |
| Phthalic anhydride | 0.01 |
| n-Hexane (Hexane) | 0.00 |
| Certain glycol ethers | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Ethylene glycol | 0.00 |
| Zinc compounds | 0.00 |
| Styrene | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| n-Butyl alcohol (1-Butanol) | 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 |
| Methanol | 0.00 |
| Methyl methacrylate | 0.00 |
| Ethyl acrylate | 0.00 |
| Ethylbenzene | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Tetrachloroethylene | 0.00 |
| Manganese | 0.00 |
| Copper | 0.00 |
| Formic acid | 0.00 |
| Diethanolamine | 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 |
| Methyl isobutyl ketone | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Butyraldehyde | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
