| Ethylene oxide | 114.48 |
| 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.) | 88.36 |
| Cobalt | 49.97 |
| Chromium | 24.21 |
| Cadmium compounds | 15.88 |
| Diisocyanates | 13.83 |
| Nickel | 6.69 |
| Benzene | 1.94 |
| Nickel compounds | 1.66 |
| Toluene diisocyanate (mixed isomers) | 1.61 |
| Chlorine | 0.88 |
| Polycyclic aromatic compounds | 0.73 |
| Antimony compounds | 0.43 |
| Acrylonitrile | 0.26 |
| Di(2-ethylhexyl) phthalate | 0.24 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.18 |
| 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) | 0.10 |
| Nitric acid | 0.10 |
| Formaldehyde | 0.09 |
| Copper | 0.08 |
| Xylene (mixed isomers) | 0.05 |
| Acetonitrile | 0.04 |
| Certain glycol ethers | 0.03 |
| Lead | 0.03 |
| Ethylbenzene | 0.03 |
| Cyanide compounds | 0.02 |
| Pyridine | 0.02 |
| Lead compounds | 0.02 |
| Acetophenone | 0.02 |
| Naphthalene | 0.02 |
| N,N-Dimethylformamide | 0.01 |
| Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.01 |
| Phenol | 0.01 |
| Triethylamine | 0.01 |
| Aluminum (fume or dust) | 0.01 |
| Maleic anhydride | 0.01 |
| Butyl acrylate | 0.01 |
| Manganese | 0.01 |
| Zinc compounds | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Mercury compounds | 0.01 |
| Silver compounds | 0.00 |
| Styrene | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Acrylic acid | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Methyl methacrylate | 0.00 |
| Toluene | 0.00 |
| Silver | 0.00 |
| Vinyl acetate | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Ethylene glycol | 0.00 |
| Mercury | 0.00 |
| Methanol | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Ethyl acrylate | 0.00 |
| Phthalic anhydride | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| Formic acid | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
