PCB Data
For a complete list of PCB congeners, see PCB Congener List. Note that biphenyl, while not technically a PCB congener due to its lack of chlorine substituents, is still typically included in the literature.
| PCB Homolog | CASRN | Cl Substituents | Number of Congeners |
|---|---|---|---|
| Biphenyl | 92-52-4 | 0 | 1 |
| Monochlorobiphenyl | 27323-18-8 | 1 | 3 |
| Dichlorobiphenyl | 25512-42-9 | 2 | 12 |
| Trichlorobiphenyl | 25323-68-6 | 3 | 24 |
| Tetrachlorobiphenyl | 26914-33-0 | 4 | 42 |
| Pentachlorobiphenyl | 25429-29-2 | 5 | 46 |
| Hexachlorobiphenyl | 26601-64-9 | 6 | 42 |
| Heptachlorobiphenyl | 28655-71-2 | 7 | 24 |
| Octachlorobiphenyl | 55722-26-4 | 8 | 12 |
| Nonachlorobiphenyl | 53742-07-7 | 9 | 3 |
| Decachlorobiphenyl | 2051-24-3 | 10 | 1 |
Read more about this topic: Polychlorinated Biphenyl
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