4-((4-((4,6-Dichloro-1,3,5-triazin-2-yl)amino)-2-sulphophenyl)azo)-4,5-dihydro-5-oxo-1-(4-sulphophenyl)-1H-pyrazole-3-carboxylic acid, potassium sodium salt 85136-23-8 EINECS 285-747-2