1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-(1-(4-((4-hydroxyphenyl)azo)phenyl)cyclohexyl)phenyl)azo)-, disodium salt 6507-77-3 Disodium 7-hydroxy-8-((4-(1-(4-((4-hydroxyphenyl)azo)phenyl)cyclohexyl)phenyl)azo)naphthalene-1,3-disulphonate EINECS 229-396-5