2-Naphthalenecarboxamide, N,N'-(2,5-dichloro-1,4-phenylene)bis(4-((2,5-dichlorophenyl)azo)-3-hydroxy- 40618-31-3 82643-43-4 EINECS 255-005-2 N,N'-(2,5-Dichloro-1,4-phenylene)bis(4-((2,5-dichlorophenyl)azo)-3-hydroxynaphthalene-2-carboxamide)