2,7-Naphthalenedisulfonic acid, 3-((2,2'-dimethyl-4'-((4-(((4-methylphenyl)sulfonyl)oxy)phenyl)azo)(1,1'-biphenyl)-4-yl)azo)-4-hydroxy-, disodium salt 51278-14-9 6358-57-2 C.I. ACID RED 111 C.I. Acid Red 111, disodium salt CCRIS 2424 Disodium 3-((2,2'-dimethyl-4'-((4-(((p-tolyl)sulphonyl)oxy)phenyl)azo)(1,1'-biphenyl)-4-yl)azo)-4-hydroxynaphthalene-2,7-disulphonate EINECS 228-779-4