6359-83-7 Benzoic acid, 2-((4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl)azo)-, disodium salt Disodium 2-((4,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl)azo)benzoate EINECS 228-809-6