N,N'-(2,5-dichloro-1,4-phenylene)bis[4-[(2,5-dichlorophenyl)azo]-3-hydroxynaphthalene-2-carboxamide];2-Naphthalenecarboxamide, N,N-(2,5-dichloro-1,4-phenylene)bis4-(2,5-dichlorophenyl)azo-3-hydroxy-;DISAZO RED BN;N,N'-(2,5-dichloro-1,4-phenylene)bis[4-[(