| Ethylene oxide | 122.02 |
| 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.) | 111.18 |
| Cobalt | 107.37 |
| Nickel compounds | 36.66 |
| Chromium | 34.79 |
| Benzene | 26.43 |
| Cadmium compounds | 21.20 |
| Di(2-ethylhexyl) phthalate | 6.70 |
| Nickel | 5.48 |
| Diisocyanates | 3.46 |
| Acetaldehyde | 3.03 |
| Antimony compounds | 2.30 |
| Acrylonitrile | 2.21 |
| Chlorine | 1.39 |
| Toluene diisocyanate (mixed isomers) | 1.25 |
| Triethylamine | 0.57 |
| Formaldehyde | 0.41 |
| Ethylbenzene | 0.37 |
| Polycyclic aromatic compounds | 0.34 |
| Naphthalene | 0.29 |
| Copper | 0.18 |
| Nitric acid | 0.16 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.15 |
| 1,2,4-Trimethylbenzene | 0.11 |
| Xylene (mixed isomers) | 0.10 |
| 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) | 0.09 |
| Manganese compounds | 0.08 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.06 |
| N,N-Dimethylformamide | 0.06 |
| Lead compounds | 0.05 |
| Maleic anhydride | 0.05 |
| Cyanide compounds | 0.04 |
| Lead | 0.04 |
| Manganese | 0.04 |
| Butyl acrylate | 0.03 |
| Acetonitrile | 0.02 |
| Certain glycol ethers | 0.02 |
| Zinc compounds | 0.01 |
| Acetophenone | 0.01 |
| Mercury compounds | 0.01 |
| Phenol | 0.01 |
| n-Hexane (Hexane) | 0.01 |
| Styrene | 0.01 |
| Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.01 |
| Dichloromethane (Methylene chloride) | 0.01 |
| Methyl methacrylate | 0.01 |
| n-Butyl alcohol (1-Butanol) | 0.01 |
| Pyridine | 0.01 |
| Acrylic acid | 0.01 |
| Silver compounds | 0.01 |
| Toluene | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Silver | 0.00 |
| Ethylene glycol | 0.00 |
| Vinyl acetate | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Ethyl acrylate | 0.00 |
| Cumene | 0.00 |
| Cyclohexane | 0.00 |
| Mercury | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Methanol | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Biphenyl | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Phthalic anhydride | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Formic acid | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
