1-Naphthalenesulfonic acid, 8-(phenylamino)-5-((4-(phenylazo)-6-sulfo-1-naphthalenyl)azo)-, disodium salt 68227-72-5 Disodium 8-(phenylamino)-5-((4-(phenylazo)-6-sulphonato-1-naphthyl)azo)naphthalene-1-sulphonate EINECS 269-384-7