Biphenyl (or diphenyl or phenyl benzene or 1,1'-biphenyl or lemonene) is a solid organic compound that forms colorless to yellowish crystals. It has a distinctively pleasant smell. Biphenyl is an aromatic hydrocarbon with a molecular formula C12H10. Biphenyl is notable as a starting material for the production of polychlorinated biphenyls (PCBs), which were once widely used as dielectric fluids and heat transfer agents. Biphenyl is also an intermediate for the production of a host of other organic compounds such as emulsifiers, optical brighteners, crop protection products, and plastics.
It is mildly toxic, but can be degraded biologically by conversion into nontoxic compounds. The ability to do so by adding oxygen molecules to the aromatic rings of biphenyl is found in some bacteria. It has been demonstrated that some bacteria that have degraded biphenyl can then also degrade polychlorinated biphenyls (PCBs).
Polybrominated Diphenyl Ether Levels in the Blood of Pregnant Women Living in an Agricultural Community in California
Jan 01, 2007; BACKGROUND: Recent studies have raised concerns about polybrominated diphenyl ether (PBDE) flame retardant exposures to pregnant...
Retrospective Time-Trend Study of Polybrominated Diphenyl Ether and Polybrominated and Polychlorinated Biphenyl Levels in Human Serum from the United States
May 01, 2004; Six polybrominated diphenyl ethers (PBDEs), one hexabromobiphenyl [polybrominated biphenyl (PBB and one hexachlorobiphenyl...