Synonyms: EINECS 229-470-7;6548-31-8;75268-72-3;Benzoic acid, 3,3'-(iminobis((1-hydroxy-3-sulfo-6,2-naphthalenediyl)-2,1-diazenediyl(2,5-dimethoxy-4,1-phenylene)-2,1-diazenediyl))bis(6-hydroxy-, sodium salt (1:4);Benzoic acid, 3,3'-(iminobis((1-hydroxy-3-sulfo-6,2-naphthalenediyl)azo(2,5-dimethoxy-4,1-phenylene)azo))bis(6-hydroxy-, tetrasodium salt;Tetrasodium 5,5'-(iminobis((1-hydroxy-3-sulphonato-6,2-naphthylene)azo(2,5-dimethoxy-4,1-phenylene)azo))bis(salicylate)