Synonyms: Chromate(3-), bis(3-((4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-phenyl-1H-pyrazol-4-yl)azo-kappaN1)-2-(hydroxy-kappaO)-5-nitrobenzenesulfonato(3-))-, trihydrogen;Chromate(3-), bis(3-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-2-hydroxy-5-nitrobenzenesulfonato(3-))-, trihydrogen;Chromate(3-), bis(3-(2-(4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-phenyl-1H-pyrazol-4-yl)diazenyl-kappaN1)-2-(hydroxy-kappaO)-5-nitrobenzenesulfonato(3-))-, hydrogen (1:3);Trihydrogen bis(3-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-2-hydroxy-5-nitrobenzenesulphonato(3-))chromate(3-)