6548-31-8 75268-72-3 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 EINECS 229-470-7 Tetrasodium 5,5'-(iminobis((1-hydroxy-3-sulphonato-6,2-naphthylene)azo(2,5-dimethoxy-4,1-phenylene)azo))bis(salicylate)