2,7-Naphthalenedisulfonic acid, 5-(benzoylamino)-4-hydroxy-3-((2-(2-methylphenoxy)phenyl)azo)-, disodium salt 70210-37-6 Disodium 5-(benzoylamino)-4-hydroxy-3-((2-(2-methylphenoxy)phenyl)azo)naphthalene-2,7-disulphonate EINECS 274-434-6