| Ethylene oxide | 104.11 |
| 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.) | 72.98 |
| Chromium | 36.86 |
| Maleic anhydride | 8.37 |
| Dicyclopentadiene | 7.04 |
| Nickel | 2.87 |
| Lead | 2.13 |
| Trichloroethylene | 2.00 |
| Diisocyanates | 1.35 |
| Acrylonitrile | 1.14 |
| Antimony compounds | 1.03 |
| Peracetic acid | 0.87 |
| Formaldehyde | 0.19 |
| Zinc compounds | 0.15 |
| Di(2-ethylhexyl) phthalate | 0.14 |
| Polycyclic aromatic compounds | 0.12 |
| Butyl acrylate | 0.09 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.05 |
| Dichloromethane (Methylene chloride) | 0.04 |
| Phthalic anhydride | 0.03 |
| Nitric acid | 0.02 |
| Hydrogen cyanide | 0.01 |
| Lead compounds | 0.01 |
| Acetonitrile | 0.01 |
| Styrene | 0.01 |
| 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) | 0.01 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.01 |
| Phenol | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Pyridine | 0.01 |
| Copper | 0.00 |
| Toluene | 0.00 |
| Toluene diisocyanate (mixed isomers) | 0.00 |
| Acrylic acid | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| Certain glycol ethers | 0.00 |
| Ethyl acrylate | 0.00 |
| Ethylene glycol | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Xylene (mixed isomers) | 0.00 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Methyl methacrylate | 0.00 |
| o-Xylene | 0.00 |
| Methanol | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Vinyl acetate | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| N,N-Dimethylformamide | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Formic acid | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Manganese | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Methyl isobutyl ketone | 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 |
