2-Naphthalenecarboxamide, N,N'-1,5-naphthalenediylbis(4-((2,3-dichlorophenyl)azo)-3-hydroxy- 68516-75-6 EINECS 271-178-7 N,N'-1,5-Naphthylenebis(4-(2,3-dichlorophenyl)azo)-3-hydroxy-2-naphthamide N,N'-Naphthalene-1,5-diylbis(4-((2,3-dichlorophenyl)azo)-3-hydroxynaphthalene-2-carboxamide)