79817-91-7 EINECS 279-314-7 Nickelate(3-), (5-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-4-hydroxy-3-((2-hydroxy-3-nitro-5-sulfophenyl)azo)-2,7-naphthalenedisulfonato(5-))-, trisodium Trisodium (5-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-4-hydroxy-3-((2-hydroxy-3-nitro-5-sulphophenyl)azo)naphthalene-2,7-disulphonato(5-))nickelate(3-)