Synonyms: 1,4-Benzenediamine,N-(4-aminophenyl)- (9CI); Diphenylamine, 4,4'-diamino- (6CI,7CI,8CI);4,4'-Diaminodiphenylamine; 4,4'-Iminodianiline; Benzenamine, 4,4'-iminobis-;Bis(4-aminophenyl)amine; Bis(p-aminophenyl)amine; C.I. 76120;Di(p-aminophenyl)amine; Diazol Black C; Indamine;N-(4-Aminophenyl)-1,4-benzenediamine; N-(4-Aminophenyl)-p-phenylenediamine; NSC33417; p,p'-Diaminodiphenylamine; p,p'-Iminodianiline