| Ethylene oxide | 140.65 |
| Cobalt | 66.26 |
| Chromium | 64.60 |
| 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.) | 63.14 |
| Trichloroethylene | 8.39 |
| Nickel | 7.92 |
| Antimony compounds | 3.60 |
| Diisocyanates | 3.38 |
| Maleic anhydride | 3.37 |
| Nickel compounds | 3.35 |
| Dicyclopentadiene | 3.31 |
| Lead | 2.75 |
| Chloroform | 1.05 |
| Acrylonitrile | 0.54 |
| Peracetic acid | 0.46 |
| Formaldehyde | 0.27 |
| Zinc compounds | 0.20 |
| Di(2-ethylhexyl) phthalate | 0.18 |
| Polycyclic aromatic compounds | 0.09 |
| Dichloromethane (Methylene chloride) | 0.07 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.06 |
| Butyl acrylate | 0.05 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.04 |
| Nitric acid | 0.03 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.03 |
| Copper | 0.02 |
| Lead compounds | 0.02 |
| Toluene diisocyanate (mixed isomers) | 0.02 |
| Hydrogen cyanide | 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) | 0.01 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.01 |
| Acetonitrile | 0.01 |
| Phthalic anhydride | 0.01 |
| Phenol | 0.01 |
| Pyridine | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Toluene | 0.01 |
| Triethylamine | 0.01 |
| Styrene | 0.00 |
| Methyl tert-butyl ether | 0.00 |
| Methanol | 0.00 |
| Certain glycol ethers | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| o-Xylene | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Ethylene glycol | 0.00 |
| Xylene (mixed isomers) | 0.00 |
| Acrylic acid | 0.00 |
| Silver compounds | 0.00 |
| Ethyl acrylate | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Methyl methacrylate | 0.00 |
| Vinyl acetate | 0.00 |
| Manganese | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Formic acid | 0.00 |
| Acetophenone | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Methyl isobutyl ketone | 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 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
