6416-67-7 Benzenesulfonic acid, 5-((2,4-dihydroxy-3-((4-sulfophenyl)azo)phenyl)azo)-2-(phenylamino)-, disodium salt Disodium 5-((2,4-dihydroxy-3-((4-sulphonatophenyl)azo)phenyl)azo)-2-(phenylamino)benzenesulphonate EINECS 229-130-8