| Chromium | 121.28 |
| Cobalt | 91.86 |
| Ethylene oxide | 10.44 |
| Trichloroethylene | 8.85 |
| 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.) | 6.95 |
| Nickel | 6.63 |
| Lead | 4.97 |
| Nickel compounds | 4.15 |
| Diisocyanates | 2.40 |
| Chloroform | 1.46 |
| Formaldehyde | 0.74 |
| Antimony compounds | 0.71 |
| Maleic anhydride | 0.63 |
| Dicyclopentadiene | 0.57 |
| Zinc compounds | 0.35 |
| Di(2-ethylhexyl) phthalate | 0.27 |
| Polycyclic aromatic compounds | 0.19 |
| Dichloromethane (Methylene chloride) | 0.13 |
| Acrylonitrile | 0.09 |
| Peracetic acid | 0.08 |
| Benzene | 0.08 |
| Lead compounds | 0.05 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.04 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.04 |
| N,N-Dimethylformamide | 0.04 |
| Nitric acid | 0.04 |
| Toluene diisocyanate (mixed isomers) | 0.04 |
| Copper | 0.03 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.03 |
| Hydrogen cyanide | 0.03 |
| 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) | 0.03 |
| Ethylbenzene | 0.02 |
| Triethylamine | 0.02 |
| Naphthalene | 0.02 |
| Toluene | 0.01 |
| Certain glycol ethers | 0.01 |
| Methyl tert-butyl ether | 0.01 |
| Butyl acrylate | 0.01 |
| Acetonitrile | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| n-Hexane (Hexane) | 0.00 |
| Xylene (mixed isomers) | 0.00 |
| Pyridine | 0.00 |
| Ethylene glycol | 0.00 |
| o-Xylene | 0.00 |
| Phthalic anhydride | 0.00 |
| Silver compounds | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Phenol | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Methanol | 0.00 |
| Styrene | 0.00 |
| Manganese | 0.00 |
| Acrylic acid | 0.00 |
| Ethyl acrylate | 0.00 |
| Methyl methacrylate | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Cyclohexane | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Sodium nitrite | 0.00 |
| Acetophenone | 0.00 |
| Vinyl acetate | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Formic acid | 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 |
| Tetrabromobisphenol A | 0.00 |
