Synonyms: Chromate(1-),bis[2-[(2-hydroxy-3,5-dinitrophenyl)azo]-4-methyl-1-naphthalenolato(2-)]-,sodium; Chromate(1-), bis[2-[[2-(hydroxy-kO)-3,5-dinitrophenyl]azo-kN1]-4-methyl-1-naphthalenolato(2-)-kO]-, sodium (9CI);1-Naphthalenol, 2-[(2-hydroxy-3,5-dinitrophenyl)azo]-4-methyl-, chromium complex