Synonyms: Chromate(2-), (2,4-dihydro-4-(2-(2-(hydroxy-kappaO)-5-nitrophenyl)diazenyl-kappaN1)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-kappaO3)(3-(hydroxy-kappaO)-4-(2-(2-(hydroxy-kappaO)-1-naphthalenyl)diazenyl-kappaN1)-7-nitro-1-naphthalenesulfonato(3-))-, sodium hydrogen (1:1:1);(4-((2-Hydroxy-5-nitrophenyl)azo)-3-methyl-1-phenyl-2-pyrazolin-5-onato)(4-((2-hydroxynaphthalen-1-yl)azo)-3-hydroxy-7-nitronaphthalene-1-sulfonate(3-) chromate(1-), sodium dihydrogen;Chromate(2-), (2,4-dihydro-4-((2-(hydroxy-kappaO)-5-nitrophenyl)azo-kappaN1)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-kappaO3)(3-(hydroxy-kappaO)-4-((2-(hydroxy-kappaO)-1-naphthalenyl)azo-kappaN1)-7-nitro-1-naphthalenesulfonato(3-))-, sodium hydrogen;Chromate(2-), (2,4-dihydro-4-((2-hydroxy-5-nitrophenyl)azo)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-))(3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1-naphthalenesulfo nato(3-))-, sodium hydrogen;Sodium hydrogen (2,4-dihydro-4-((2-hydroxy-5-nitrophenyl)azo)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-))(3-hydroxy-4-((2-hydroxy-1-naphthyl)azo)-7-nitronaphthalene-1-sulphonato(3-))chromate(2-);chromium(3+) hydrogen sodium 7-(dioxidoamino)-3-oxo-4-[(2-oxonaphthalen-1(2H)-ylidene)hydrazinylidene]-3,4-dihydronaphthalene-1-sulfonate 5-methyl-4-[(3-nitro-6-oxocyclohexa-2,4-dien-1-ylidene)diazanidyl]-3-oxo-2-phenyl-2,3-dihydropyrazol-1-ide (1:1:1:1:1)