| 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.) | 133.98 |
| Cobalt | 125.29 |
| Ethylene oxide | 56.91 |
| Nickel compounds | 54.33 |
| Chromium | 48.19 |
| Cadmium compounds | 10.28 |
| Nickel | 9.37 |
| Toluene diisocyanate (mixed isomers) | 8.68 |
| Benzene | 4.70 |
| Diisocyanates | 3.17 |
| Acetaldehyde | 2.05 |
| Formaldehyde | 0.91 |
| Chlorine | 0.68 |
| Copper | 0.66 |
| Chloroform | 0.65 |
| Polycyclic aromatic compounds | 0.57 |
| Di(2-ethylhexyl) phthalate | 0.51 |
| Acetonitrile | 0.48 |
| Antimony compounds | 0.37 |
| Acrylonitrile | 0.37 |
| Lead | 0.21 |
| Xylene (mixed isomers) | 0.09 |
| Ethylbenzene | 0.09 |
| Zinc compounds | 0.08 |
| Butyl acrylate | 0.07 |
| Triethylamine | 0.06 |
| Manganese compounds | 0.05 |
| Certain glycol ethers | 0.05 |
| Nitric acid | 0.04 |
| Naphthalene | 0.04 |
| Lead compounds | 0.04 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.04 |
| 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 |
| Maleic anhydride | 0.03 |
| Manganese | 0.03 |
| Dichloromethane (Methylene chloride) | 0.02 |
| Cyanide compounds | 0.02 |
| Acrylic acid | 0.02 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Methyl methacrylate | 0.01 |
| Styrene | 0.01 |
| 1,2,4-Trimethylbenzene | 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 |
| Mercury compounds | 0.01 |
| Phenol | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Pyridine | 0.00 |
| Acetophenone | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Silver compounds | 0.00 |
| Vinyl acetate | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Toluene | 0.00 |
| Ethylene glycol | 0.00 |
| Silver | 0.00 |
| Mercury | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Methanol | 0.00 |
| Ethyl acrylate | 0.00 |
| Propylene oxide | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| Biphenyl | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 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 |
