1,3-Naphthalenedisulfonic acid, 8-((4-(acetylcyclohexylamino)phenyl)azo)-7-hydroxy-, disodium salt 5863-95-6 Disodium 8-((4-(acetylcyclohexylamino)phenyl)azo)-7-hydroxynaphthalene-1,3-disulphonate EINECS 227-517-6