Synonyms: 1,4-Benzenediamine,N,N'-bis[[4-(heptyloxy)phenyl]methylene]- (9CI); p-Phenylenediamine, N,N'-bis[p-(heptyloxy)benzylidene]-(8CI); Bis(4,4'-heptyloxybenzylidene)-1,4-phenylenediamine;Bis(4-n-heptyloxybenzal)-1,4-phenylenediamine;Bis(4'-heptyloxybenzylidene)-1,4-phenylenediamine