4,4'-Biphenyl dicarboxylic acid (84787-70-2) also can be called for Biphenyl-4,4'-dicarboxylic acid ; p,p'-Diphenic acid ; 4,4'-Bibenzoic acid ; 4,4'-Dicarboxybiphenyl ; 4,4'-Diphenic acid .And it is used for food and feed additive.