Synonyms: Chromate(2-), (3-(hydroxy-kappaO)-4-(2-(2-(hydroxy-kappaO)-1-naphthalenyl)diazenyl-kappaN1)-7-nitro-1-naphthalenesulfonato(3-))(1-(2-(2-(hydroxy-kappaO)-4-nitrophenyl)diazenyl-kappaN1)-2-naphthalenolato(2-)-kappaO)-, sodium hydrogen (1:1:1);Chromate(3-), (1-((2-hydroxy-4-nitrophenyl)azo)-2-naphthalenolato(2-))(3-hydroxy-4-((2-hydroxy-1-naphthyl)azo)-7-nitro-1-naphthalenesulfonato(3-)), sodium dihydrogen;Chromate(2-), (3-(hydroxy-kappaO)-4-((2-(hydroxy-kappaO)-1-naphthalenyl)azo-kappaN1)-7-nitro-1-naphthalenesulfonato(3-))(1-((2-(hydroxy-kappaO)-4-nitrophenyl)azo-kappaN1)-2-naphthalenolato(2-)-kappaO)-, sodium hydrogen;Chromate(2-), (3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1-naphthalenesulfonato(3-))(1-((2-hydroxy-4-nitrophenyl)azo)-2-naphthalenolato(2-))-, sodium hydrogen;Hydrogen sodium (3-hydroxy-4-((2-hydroxy-1-naphthyl)azo)-7-nitronaphthalene-1-sulphonato(3-))(1-((2-hydroxy-4-nitrophenyl)azo)-2-naphtholato(2-))chromate(2-);chromium(3+) hydrogen sodium 7-(dioxidoamino)-3-oxo-4-[(2-oxonaphthalen-1(2H)-ylidene)hydrazinylidene]-3,4-dihydronaphthalene-1-sulfonate 1-[(4-nitro-6-oxocyclohexa-2,4-dien-1-ylidene)diazanidyl]naphthalen-2-olate (1:1:1:1:1)