3-((4-Sulfophenyl)azo)-4-hydroxy-7-amino-8-((2-hydroxy-4-nitrophenyl)azo)-2-naphthalenesulfonic acid, chromium complex, sodium salt 75268-74-5 Chromate(1-), (7-amino-4-hydroxy-8-((2-hydroxy-4-nitrophenyl)azo)-3-((4-sulfophenyl)azo)-2-naphthalenesulfonato(4-))-, sodium EINECS 278-161-3 Sodium (7-amino-4-hydroxy-8-((2-hydroxy-4-nitrophenyl)azo)-3-((4-sulphophenyl)azo)naphthalene-2-sulphonato(4-))chromate(1-)