Description; Application; Benzidine (4,4′-Diaminobiphenyl) is an environmental genotoxin that posses increased risks of cancer to exposed people. Benzidine may be used as a reference material in procedures that analyze for benzidine. Benzidine can be used in studies on its mechanisms of genotoxicity.; Biochem/physiol Actions; Tumor initiator in mammary glands of experimental animal.[1]; Warning; Cancer suspect agent.