| Ethylene oxide | 228.59 |
| 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.) | 97.02 |
| Chromium | 94.55 |
| Nickel | 15.06 |
| Maleic anhydride | 4.54 |
| Cadmium compounds | 3.02 |
| Dicyclopentadiene | 2.25 |
| Diisocyanates | 2.07 |
| Lead | 1.95 |
| Antimony compounds | 1.63 |
| Acrylonitrile | 0.49 |
| Peracetic acid | 0.39 |
| Di(2-ethylhexyl) phthalate | 0.20 |
| Chlorine | 0.19 |
| Zinc compounds | 0.14 |
| Polycyclic aromatic compounds | 0.09 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.09 |
| Formaldehyde | 0.07 |
| Dichloromethane (Methylene chloride) | 0.06 |
| Lead compounds | 0.05 |
| Nitric acid | 0.05 |
| Phenol | 0.04 |
| Nickel compounds | 0.04 |
| Butyl acrylate | 0.04 |
| 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 |
| Acetonitrile | 0.02 |
| Phthalic anhydride | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Hydrogen cyanide | 0.01 |
| Pyridine | 0.01 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.01 |
| Ethylene glycol | 0.01 |
| Copper | 0.01 |
| Cyanide compounds | 0.00 |
| Styrene | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| Xylene (mixed isomers) | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Methanol | 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 |
| o-Xylene | 0.00 |
| Certain glycol ethers | 0.00 |
| Acrylic acid | 0.00 |
| Vinyl acetate | 0.00 |
| Ethyl acrylate | 0.00 |
| Methyl methacrylate | 0.00 |
| Acetophenone | 0.00 |
| Silver compounds | 0.00 |
| Toluene | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Mercury | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Formic acid | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Silver | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| N,N-Dimethylformamide | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
