2-Naphthalenesulfonic acid, 4-hydroxy-3-((2-methoxy-5-methyl-4-((4-sulfophenyl)azo)phenyl)azo)-7-(phenylamino)-, disodium salt 6227-14-1 C.I. DIRECT VIOLET 9 C.I. Direct Violet 9, disodium salt Disodium 4-hydroxy-3-((2-methoxy-5-methyl-4-((4-sulphonatophenyl)azo)phenyl)azo)-7-(phenylamino)naphthalene-2-sulphonate EINECS 228-326-0