| Cobalt | 19.94 |
| Chromium | 16.47 |
| Ethylene oxide | 10.77 |
| Dicyclopentadiene | 7.96 |
| Trichloroethylene | 4.66 |
| Maleic anhydride | 4.57 |
| 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.) | 3.94 |
| Nickel | 3.51 |
| Acrylonitrile | 0.47 |
| Peracetic acid | 0.41 |
| Antimony compounds | 0.27 |
| Diisocyanates | 0.17 |
| Formaldehyde | 0.11 |
| Dichloromethane (Methylene chloride) | 0.10 |
| Polycyclic aromatic compounds | 0.05 |
| Butyl acrylate | 0.04 |
| Lead | 0.04 |
| Phthalic anhydride | 0.02 |
| Styrene | 0.01 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.01 |
| Nitric acid | 0.00 |
| Toluene | 0.00 |
| Acetonitrile | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Toluene diisocyanate (mixed isomers) | 0.00 |
| 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) | 0.00 |
| Lead compounds | 0.00 |
| Copper | 0.00 |
| Zinc compounds | 0.00 |
| Certain glycol ethers | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| Acrylic acid | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Ethyl acrylate | 0.00 |
| Methyl methacrylate | 0.00 |
| o-Xylene | 0.00 |
| Ethylene glycol | 0.00 |
| Phenol | 0.00 |
| N,N-Dimethylformamide | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Methanol | 0.00 |
| Xylene (mixed isomers) | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Vinyl acetate | 0.00 |
| Silver compounds | 0.00 |
| Manganese | 0.00 |
| Acetophenone | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Formic acid | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Cyanide compounds | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Tetrabromobisphenol A | 0.00 |
