Synonyms: Chromate(1-),bis[3-[(5,8-dichloro-1-hydroxy-2-naphthalenyl)azo]-4-hydroxybenzenesulfonamidato(2-)]-,sodium; Chromate(1-), bis[3-[[5,8-dichloro-1-(hydroxy-kO)-2-naphthalenyl]azo-kN1]-4-(hydroxy-kO)benzenesulfonamidato(2-)]-,sodium (9CI); Benzenesulfonamide, 3-[(5,8-dichloro-1-hydroxy-2-naphthalenyl)azo]-4-hydroxy-,chromium complex