| 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.) | 75.97 |
| Ethylene oxide | 48.20 |
| Chromium | 6.54 |
| Diisocyanates | 3.59 |
| Nickel | 1.45 |
| Certain glycol ethers | 0.17 |
| Antimony compounds | 0.16 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.05 |
| Xylene (mixed isomers) | 0.05 |
| Di(2-ethylhexyl) phthalate | 0.04 |
| Nickel compounds | 0.03 |
| Polycyclic aromatic compounds | 0.03 |
| 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 |
| N,N-Dimethylformamide | 0.02 |
| Nitric acid | 0.02 |
| Formaldehyde | 0.02 |
| Acetonitrile | 0.01 |
| Ozone | 0.01 |
| Pyridine | 0.01 |
| Lead compounds | 0.00 |
| Phenol | 0.00 |
| Lead | 0.00 |
| Methanol | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Chlorine | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Zinc compounds | 0.00 |
| Acetophenone | 0.00 |
| Vinyl acetate | 0.00 |
| Toluene | 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 |
| Ethylene glycol | 0.00 |
| Styrene | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Silver | 0.00 |
| Phthalic anhydride | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Formic acid | 0.00 |
| Mercury | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Cyanide compounds | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Copper | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
