| Cobalt | 110.63 |
| Chromium | 56.29 |
| Nickel | 13.54 |
| 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.) | 4.88 |
| Ethylene oxide | 4.87 |
| Lead | 2.32 |
| Trichloroethylene | 1.32 |
| Diisocyanates | 1.30 |
| Dicyclopentadiene | 1.15 |
| Maleic anhydride | 1.02 |
| Antimony compounds | 0.60 |
| Formaldehyde | 0.30 |
| Zinc compounds | 0.16 |
| Acrylonitrile | 0.13 |
| Peracetic acid | 0.12 |
| Di(2-ethylhexyl) phthalate | 0.11 |
| Dichloromethane (Methylene chloride) | 0.08 |
| Polycyclic aromatic compounds | 0.04 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.03 |
| N,N-Dimethylformamide | 0.02 |
| Hydrogen cyanide | 0.02 |
| Toluene diisocyanate (mixed isomers) | 0.02 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.02 |
| Nitric acid | 0.01 |
| Lead compounds | 0.01 |
| Copper | 0.01 |
| Butyl acrylate | 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 |
| Toluene | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Triethylamine | 0.01 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.01 |
| Methyl tert-butyl ether | 0.00 |
| Certain glycol ethers | 0.00 |
| Phthalic anhydride | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Styrene | 0.00 |
| Ethylene glycol | 0.00 |
| Methanol | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| o-Xylene | 0.00 |
| Xylene (mixed isomers) | 0.00 |
| Acrylic acid | 0.00 |
| Manganese | 0.00 |
| Phenol | 0.00 |
| Ethyl acrylate | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Methyl methacrylate | 0.00 |
| Acetonitrile | 0.00 |
| Silver compounds | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Acetophenone | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Formic acid | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Tetrabromobisphenol A | 0.00 |
