4-(2,4-Dihydroxyphenylazo)-3-hydroxy-1-naphthalenesulfonic acid sodium salt;4-[(2,4-Dihydroxyphenyl)azo]-3-hydroxy-1-naphthalenesulfonic acid sodium salt;4-[(2,4-Dihydroxyphenyl)azo]-3-hydroxynaphthalene-1-sulfonic acid sodium salt;C.I.14305;Salicine Black RLF
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