102616-51-3 3,3'-Methylenebis(6-((2,4-dihydroxy-5-((4-sulphophenyl)azo)phenyl)azo)benzoic) acid, sodium salt 85223-35-4 Azo dye compd. Benzoic acid, 3,3'-methylenebis(6-((2,4-dihydroxy-5-((4-sulfonylphenyl)azo)phenyl)azo)-, sodium salt Benzoic acid, 3,3'-methylenebis(6-((2,4-dihydroxy-5-((4-sulfophenyl)azo)phenyl)azo)-, sodium salt EINECS 286-391-0