biphenyl /bi·phen·yl/ (-fen´il) diphenyl.
polychlorinated biphenyl (PCB) any of a group of chlorinated derivatives of biphenyl, used as heat-transfer agents and electrical insulators; they are toxic, carcinogenic, and non-biodegradable.
bi·phen·yl (b -f n  l, -f nl)n. A colorless crystalline aromatic hydrocarbon used in fungicides and in organic synthesis. Also called diphenyl. |
biphenyl
polybrominated and polychlorinated biphenyls are widely used industrial chemicals, as flame retardants, heat transfer agents and electrical insulators.
biphenyl poisoning
these chemicals are not known to produce illness in the average environment, but they accumulate in fat and have a very slow rate of excretion and biodegradability. Experimental poisoning causes diarrhea, poor weight gain, growth retardation and abortion.
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