Synonyms: Ethanol,2,2'-[[4-[(2-hydroxyethyl)amino]-3-nitrophenyl]imino]di- (7CI,8CI);2,2'-[4-(2-Hydroxyethylamino)-3-nitrophenylimino]diethanol;HC Blue 2;HC BlueNo. 2;N,N',N'-Tris(2-hydroxyethyl)-2-nitro-p-phenylenediamine;N1,N4,N4-Tris(2-hydroxyethyl)-2-nitro-p-phenylenediamine;