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2-Naphthol-6,8-disulfonic acid dipotassium salt842-18-238 % similar Disodium m-benzenedisulfonate831-59-438 % similar Direct blue 714399-55-738 % similar Eriochrome black T1787-61-738 % similar 2,7-Dihydroxy-3,6-naphthalenesulfonate disodium salt7153-21-138 % similar Tiron (chemical)149-45-137 % similar Sodium 1-naphthol-4-sulfonate6099-57-637 % similar Thiocol1321-14-837 % similar C.I. Direct black 172945-96-237 % similar Sodium xylenesulfonate1300-72-737 % similar Sudan IV85-83-637 % similar Disodium 4-formyl-1,3-benzenedisulfonate33513-44-937 % similar Solvent red 253176-79-237 % similar Reactive black 517095-24-836 % similar Direct red 233441-14-336 % similar Direct black 226473-13-836 % similar Sodium 4-methylbenzenesulfonate12068-03-036 % similar Sodium p-aminobenzenesulfonate515-74-236 % similar Sodium p-toluenesulfonate657-84-136 % similar Olsalazine sodium6054-98-436 % similar