83221-51-6

2-Naphthalenesulfonic acid,7,7'-(carbonyldiimino)bis[4-hydroxy-3-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]-,potassium sodium salt 2-Naphthalenesulfonic acid, 7,7'-(carbonyldiimino)bis[4-hydroxy-3-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]-, potassium sodium salt 7,7'-(carbonyldiimino)bis[4-hydroxy-3-[[2-sulpho-4-[(4-sulphophenyl)azo]phenyl]azo]naphthalene-2-sulphonic] acid, potassium sodium salt