NCIt definition : A colorless, crystalline, solid aromatic amine that turns purple when exposed to air
and emits toxic fumes when heated. p-Biphenylamine is used only in laboratory research
to induce tumorigenesis. Exposure to p-biphenylamine causes headaches, lethargy, cyanosis,
urinary burning and hematuria. p-Biphenylamine is a mutagen and carcinogen in humans
and is associated with an increased risk of developing bladder cancer. (NCI05);