10134-33-5 2-Naphthalenesulfonic acid, 8-((7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo)-5-((4-(phenylazo)-7-sulfo-1-naphthalenyl)azo)-, trisodium salt EINECS 233-374-0 Trisodium 8-((7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo)-5-((4-(phenylazo)-7-sulphonatonaphthyl)azo)naphthalene-2-sulphonate