Synonyms: 5,5'-(Vinylenebis((3-sulpho-p-phenylene)azo))bis(3-methylsalicylic) acid, potassium salt, compound with 2,2',2''-nitrilotriethanol;Benzoic acid, 3,3'-(1,2-ethenediylbis((3-sulfo-4,1-phenylene)azo))bis(6-hydroxy-5-methyl-, potassium salt, compd. with 2,2',2''-nitrilotris(ethanol)