2-Naphthalenesulfonic acid, 5(or 8)-((3-((4-((3-chloro-2-methyl-5-sulfophenyl)azo)-3-methylphenyl)azo)-2,6-dihydroxyphenyl)azo)-, disodium salt 8003-78-9 Disodium (5or8)-((3-((4-((3-chloro-2-methyl-5-sulphonatophenyl)azo)-3-methylphenyl)azo)-2,6-dihydroxyphenyl)azo)naphthalene-2-sulphonate EINECS 232-324-5