| Chromium | 218.65 |
| 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.) | 134.14 |
| Ethylene oxide | 108.66 |
| Nickel | 55.50 |
| Maleic anhydride | 6.84 |
| Dicyclopentadiene | 4.30 |
| Trichloroethylene | 2.14 |
| Diisocyanates | 1.19 |
| Antimony compounds | 0.83 |
| Acrylonitrile | 0.70 |
| Peracetic acid | 0.54 |
| Lead compounds | 0.07 |
| Polycyclic aromatic compounds | 0.07 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.06 |
| Butyl acrylate | 0.06 |
| Phenol | 0.05 |
| 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) | 0.04 |
| Nickel compounds | 0.03 |
| Lead | 0.03 |
| Dichloromethane (Methylene chloride) | 0.03 |
| Nitric acid | 0.03 |
| Formaldehyde | 0.02 |
| Phthalic anhydride | 0.02 |
| Acetonitrile | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Ethylene glycol | 0.01 |
| Styrene | 0.01 |
| Pyridine | 0.01 |
| Zinc compounds | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Xylene (mixed isomers) | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| Acrylic acid | 0.00 |
| o-Xylene | 0.00 |
| Ethyl acrylate | 0.00 |
| Methyl methacrylate | 0.00 |
| Vinyl acetate | 0.00 |
| Toluene | 0.00 |
| Methanol | 0.00 |
| Certain glycol ethers | 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 |
| Silver | 0.00 |
| Formic acid | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Manganese | 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 |
