| Cobalt | 84.25 |
| Chromium | 59.94 |
| Antimony compounds | 23.62 |
| 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.) | 21.53 |
| Ethylene oxide | 16.38 |
| Trichloroethylene | 8.80 |
| Nickel | 7.50 |
| Nickel compounds | 3.31 |
| Lead | 2.91 |
| Dicyclopentadiene | 2.11 |
| Diisocyanates | 1.71 |
| Maleic anhydride | 1.42 |
| Chloroform | 1.16 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.39 |
| Formaldehyde | 0.25 |
| Acrylonitrile | 0.24 |
| Zinc compounds | 0.24 |
| Peracetic acid | 0.22 |
| Di(2-ethylhexyl) phthalate | 0.20 |
| Dichloromethane (Methylene chloride) | 0.10 |
| Polycyclic aromatic compounds | 0.05 |
| Methanol | 0.04 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.04 |
| Lead compounds | 0.03 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.03 |
| N,N-Dimethylformamide | 0.02 |
| Butyl acrylate | 0.02 |
| Nitric acid | 0.02 |
| Copper | 0.02 |
| Toluene diisocyanate (mixed isomers) | 0.02 |
| Hydrogen cyanide | 0.02 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.02 |
| Triethylamine | 0.01 |
| Acetonitrile | 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 |
| Methyl tert-butyl ether | 0.01 |
| Phthalic anhydride | 0.00 |
| Pyridine | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Certain glycol ethers | 0.00 |
| Styrene | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| o-Xylene | 0.00 |
| Ethylene glycol | 0.00 |
| Silver compounds | 0.00 |
| Xylene (mixed isomers) | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Phenol | 0.00 |
| Acrylic acid | 0.00 |
| Ethyl acrylate | 0.00 |
| Manganese | 0.00 |
| Methyl methacrylate | 0.00 |
| Vinyl acetate | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Acetophenone | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Formic acid | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Cyanide compounds | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Tetrabromobisphenol A | 0.00 |
