英文名称:disodium [2-(2-chlorophenyl)-2,4-dihydro-4-[(2-hydroxy-5-nitrophenyl)azo]-5-methyl-3H-pyrazol-3-onato(2-)][2-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzene-1-sulphonato(3-)]chromate(2-); Chromate(2-), (2-(2-chlorophenyl)-2,4-dihydro-4-(2-(2-(hydroxy-kappaO)-5-nitrophenyl)diazenyl-kappaN1)-5-methyl-3H-pyrazol-3-onato(2-)-kappaO3)(2-(hydroxy-kappaO)-3-(2-(2-(hydroxy-kappaO)-1-naphthalenyl)diazenyl-kappaN1)-5-nitrobenzenesulfonato(3-))-, so