2-Naphthalenecarboxamide, N,N'-(2-chloro-1,4-phenylene)bis(4-((4-chloro-2-nitrophenyl)azo)-3-hydroxy- 35869-64-8 57972-00-6 EINECS 252-772-5 N,N'-(2-Chloro-1,4-phenylene)bis(4-((4-chloro-2-nitrophenyl)azo)-3-hydroxynaphthalene-2-carboxamide)