Chlorinated Aromatic Hydrocarbon (1) Chlorinated Benzenes They are benzene with one or more of the hydrogen are replaced by chlorine (2) Polychlorinated Biphenyls (PCBs) They are chlorinated benzenes with the following general structure: X can be H or Cl X can be H or Cl There are 209 possible PCBs There are 209 possible PCBs Stable compounds (some can be biodegraded) Stable compounds (some can be biodegraded) Used widely as coolants in transformers, solvents, and hydraulic fluids Used widely as coolants in transformers, solvents, and hydraulic fluids Bio-concentrate Bio-concentrate
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