| Cobalt | 94.52 |
| Chromium | 69.54 |
| Nickel | 10.66 |
| Trichloroethylene | 6.41 |
| 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.) | 4.95 |
| Ethylene oxide | 4.53 |
| Lead | 2.99 |
| Nickel compounds | 2.47 |
| Diisocyanates | 1.51 |
| Dicyclopentadiene | 0.93 |
| Chloroform | 0.86 |
| Maleic anhydride | 0.86 |
| Antimony compounds | 0.62 |
| Formaldehyde | 0.37 |
| Zinc compounds | 0.20 |
| Di(2-ethylhexyl) phthalate | 0.13 |
| Acrylonitrile | 0.12 |
| Dichloromethane (Methylene chloride) | 0.10 |
| Peracetic acid | 0.09 |
| Polycyclic aromatic compounds | 0.05 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.02 |
| N,N-Dimethylformamide | 0.02 |
| Hydrogen cyanide | 0.02 |
| Copper | 0.02 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.02 |
| Toluene diisocyanate (mixed isomers) | 0.02 |
| Nitric acid | 0.02 |
| 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 |
| Lead compounds | 0.02 |
| Butyl acrylate | 0.01 |
| Toluene | 0.01 |
| Methyl tert-butyl ether | 0.01 |
| Triethylamine | 0.01 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.00 |
| Certain glycol ethers | 0.00 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| Phthalic anhydride | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Styrene | 0.00 |
| Ethylene glycol | 0.00 |
| Silver compounds | 0.00 |
| Methanol | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| o-Xylene | 0.00 |
| Phenol | 0.00 |
| Acetonitrile | 0.00 |
| Manganese | 0.00 |
| Xylene (mixed isomers) | 0.00 |
| Acrylic acid | 0.00 |
| Ethyl acrylate | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Methyl methacrylate | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Acetophenone | 0.00 |
| Sodium nitrite | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Formic acid | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Tetrabromobisphenol A | 0.00 |
