Synonyms: DTPD OEKANAL (N N'-DITOLYLPARAPHENYLENE;DTPD, OEKANAL (N,N'-DITOLYLPARAPHENYLENEDIAMINE);N,Nμ-(p-Phenylene)ditoluidine, N,Nμ-Di-(p-tolyl)-p-phenylenediamine;N,N'-(4,1-Phenylene)bis(p-toluidine);N,N'-Bis(4-methylphenyl)-p-phenylenediamine;N,N'-Di(4-methylphenyl)-1,4-benzenediamine;N,N'-Di(4-methylphenyl)-p-phenylenediamine;N,N'-Di(p-tolyl)-1,4-benzenediamine