Synonyms: Chromate(3-),[3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulfonato(3-)][3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonato(3-)]-,triammonium; Chromate(3-), [3-[[4,5-dihydro-3-methyl-5-(oxo-kO)-1-phenyl-1H-pyrazol-4-yl]azo-kN1]-2-(hydroxy-kO)-5-nitrobenzenesulfonato(3-)][3-(hydroxy-kO)-4-[[2-(hydroxy-kO)-1-naphthalenyl]azo-kN1]-7-nitro-1-naphthalenesulfonato(3-)]-,triammonium (9CI); 1-Naphthalenesulfonic acid,3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-, chromium complex;Benzenesulfonic acid,3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitro-,chromium complex