Einecs 280-583-8

ammonium sodium 6-amino-4-hydroxy-5-[(4-nitro-2-sulphonatophenyl)azo]naphthalene-2-sulphonate

2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-5-[(4-nitro-2-sulfophenyl)azo]-, ammonium sodium salt