| Chromium | 333.44 |
| Ethylene oxide | 127.11 |
| Nickel | 98.60 |
| 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.) | 64.29 |
| Maleic anhydride | 6.22 |
| Dicyclopentadiene | 3.46 |
| Trichloroethylene | 2.19 |
| Lead compounds | 2.11 |
| Phenol | 1.44 |
| Diisocyanates | 1.30 |
| 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) | 0.96 |
| Antimony compounds | 0.92 |
| Acrylonitrile | 0.62 |
| Peracetic acid | 0.49 |
| Ethylene glycol | 0.20 |
| Polycyclic aromatic compounds | 0.07 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.07 |
| Butyl acrylate | 0.05 |
| Nickel compounds | 0.04 |
| Dichloromethane (Methylene chloride) | 0.03 |
| Nitric acid | 0.03 |
| Formaldehyde | 0.03 |
| Lead | 0.03 |
| Phthalic anhydride | 0.02 |
| Acetonitrile | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Pyridine | 0.01 |
| Styrene | 0.01 |
| Zinc compounds | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Xylene (mixed isomers) | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| Copper | 0.00 |
| Acrylic acid | 0.00 |
| o-Xylene | 0.00 |
| Vinyl acetate | 0.00 |
| Ethyl acrylate | 0.00 |
| Methyl methacrylate | 0.00 |
| Certain glycol ethers | 0.00 |
| Methanol | 0.00 |
| Toluene | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| n-Hexane (Hexane) | 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 |
| Benzo[g,h,i]perylene | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Silver | 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 |
| Cyanide compounds | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
