biphenyl is an organic compound
that forms colorless crystals. It has a distinctively pleasant
smell.
It is notable as a starting material for the production of
polychlorinated
biphenyls 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.