1,5-Naphthalenedisulfonic acid, 2-((4,5-dihydro-3-methyl-5-oxo-1-(4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)-1H-pyrazol-4-yl)azo)-, potassium sodium salt 2-((4,5-Dihydro-3-methyl-5-oxo-1-(4-((2-(sulphooxy)ethyl)sulphonyl)phenyl)-1H-pyrazol-4-yl)azo)naphthalene-1,5-disulphonic acid, potassium sodium salt 85940-63-2 EINECS 288-950-4