1H-Pyrazole-3-carboxylic acid, 4-((5-((4,6-dichloro-1,3,5-triazin-2-yl)amino)-2-sulfophenyl)azo)-4,5-dihydro-5-oxo-1-(4-sulfophenyl)-, trisodium salt 70900-45-7 EINECS 275-012-4 Trisodium 4-((5-((4,6-dichloro-1,3,5-triazin-2-yl)amino)-2-sulphonatophenyl)azo)-4,5-dihydro-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate