| Chromium | 618.62 |
| Cobalt | 525.69 |
| Trichloroethylene | 75.55 |
| Hydrazine | 63.42 |
| Nickel | 47.07 |
| Nickel compounds | 34.65 |
| Chloroform | 17.69 |
| Diisocyanates | 11.45 |
| Lead | 11.07 |
| Benzene | 8.98 |
| Di(2-ethylhexyl) phthalate | 0.88 |
| Zinc compounds | 0.81 |
| Polycyclic aromatic compounds | 0.68 |
| Naphthalene | 0.49 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.23 |
| Ethylbenzene | 0.20 |
| Copper | 0.17 |
| Toluene diisocyanate (mixed isomers) | 0.16 |
| Triethylamine | 0.09 |
| Xylene (mixed isomers) | 0.07 |
| 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) | 0.07 |
| Hydrogen cyanide | 0.06 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.06 |
| Lead compounds | 0.05 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.05 |
| n-Hexane (Hexane) | 0.04 |
| N,N-Dimethylformamide | 0.02 |
| Dichloromethane (Methylene chloride) | 0.02 |
| Nitric acid | 0.02 |
| Antimony compounds | 0.02 |
| Toluene | 0.02 |
| 1,2,4-Trimethylbenzene | 0.01 |
| Silver compounds | 0.01 |
| Toluene-2,4-diisocyanate | 0.01 |
| Manganese | 0.01 |
| Methyl methacrylate | 0.00 |
| Acetonitrile | 0.00 |
| Ethylene glycol | 0.00 |
| Certain glycol ethers | 0.00 |
| Methanol | 0.00 |
| Cyclohexane | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Propylene oxide | 0.00 |
| Sodium nitrite | 0.00 |
| Phenol | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Cumene | 0.00 |
| Styrene | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Formic acid | 0.00 |
| Benzoyl peroxide | 0.00 |
| Formaldehyde | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
