Synonyms: Chromate(2-),[2,4-diamino-5-[(2-hydroxy-5-nitrophenyl)azo]benzenesulfonato(3-)][1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphthalenolato(2-)]-,dihydrogen; Chromate(2-), [2-amino-4-(amino-kN)-5-[[2-(hydroxy-kO)-5-nitrophenyl]azo-kN1]benzenesulfonato(3-)][1-[[2-(hydroxy-kO)-4-nitrophenyl]azo-kN1]-2-naphthalenolato(2-)-kO]-, dihydrogen (9CI);2-Naphthalenol, 1-[(2-hydroxy-4-nitrophenyl)azo]-, chromium complex;Benzenesulfonic acid, 2,4-diamino-5-[(2-hydroxy-5-nitrophenyl)azo]-, chromiumcomplex