Polychlorinated Biphenals (PCBs)
Polychlorinated Biphenyls (PCBs) are synthetic chemicals that were first manufactured in 1929 and used in many industrial materials including coolants and lubricants for transformers until 1977 when a ban was placed on manufacturing and importing PCBs. The ban did not include PCBs already in use however these are being phased out and there are strict regulations for the handling, storage and disposal of PCBs.
PCBs are toxic and classified as a probable human carcinogen however they are not known to cause birth defects. PCBs may affect infant behavior or the immune system in children born to mothers who were exposed to high levels of PCBs.
Last modified on Aug 21, 2012