5-Quinolinesulfonic acid, 8-hydroxy-7-((6-sulfo-2-naphthalenyl)azo)-, disodium salt 56932-43-5 7-(6-Sulfo-2-naphthylazo)-8-hydroxyquinoline-5-sulfonic acid, disodium salt Disodium 8-hydroxy-7-((6-sulphonato-2-naphthyl)azo)quinoline-5-sulphonate EINECS 260-449-5