| 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.) | 116.07 |
| Ethylene oxide | 105.69 |
| Cobalt | 63.31 |
| Chromium | 38.18 |
| Cadmium compounds | 25.84 |
| Nickel | 19.68 |
| Diisocyanates | 5.51 |
| Benzene | 4.02 |
| Polycyclic aromatic compounds | 3.52 |
| Toluene diisocyanate (mixed isomers) | 2.88 |
| Chlorine | 1.27 |
| Nickel compounds | 0.74 |
| Formaldehyde | 0.70 |
| Chloroform | 0.66 |
| Antimony compounds | 0.65 |
| Di(2-ethylhexyl) phthalate | 0.65 |
| Acrylonitrile | 0.42 |
| Copper | 0.19 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.15 |
| Xylene (mixed isomers) | 0.09 |
| Nitric acid | 0.08 |
| Ethylbenzene | 0.06 |
| 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) | 0.05 |
| Naphthalene | 0.05 |
| Lead compounds | 0.04 |
| Certain glycol ethers | 0.04 |
| Cyanide compounds | 0.03 |
| Acetonitrile | 0.03 |
| Lead | 0.03 |
| Triethylamine | 0.03 |
| Aluminum (fume or dust) | 0.02 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.02 |
| Butyl acrylate | 0.02 |
| Dichloromethane (Methylene chloride) | 0.02 |
| Pyridine | 0.02 |
| Maleic anhydride | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| Phenol | 0.01 |
| Zinc compounds | 0.01 |
| Acetophenone | 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 |
| Silver compounds | 0.01 |
| 1,2,4-Trimethylbenzene | 0.01 |
| Mercury compounds | 0.01 |
| Manganese | 0.01 |
| Acrylic acid | 0.00 |
| Styrene | 0.00 |
| Toluene | 0.00 |
| Methyl methacrylate | 0.00 |
| n-Hexane (Hexane) | 0.00 |
| Silver | 0.00 |
| o-Xylene | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Vinyl acetate | 0.00 |
| Ethylene glycol | 0.00 |
| Methanol | 0.00 |
| Mercury | 0.00 |
| Ethyl acrylate | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| Propylene oxide | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Formic acid | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Lithium carbonate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| MIXTURE | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
