(1-((2-Hydroxy-5-nitrophenyl)azo)-2-naphthalenolato(2-))(3-hydroxy-4-((2-hydroxy-1-naphthyl)azo)-7-nitro-1-naphthalenesulfonato(3-))chromate(3-), sodium dihydrogen 68556-27-4 73507-11-6 Chromate(2-), (3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1-naphthalenesulfonato(3-))(1-((2-hydroxy-5-nitrophenyl)azo)-2-naphthalenolato(2-))-, sodium hydrogen EINECS 271-483-5 Hydrogen sodium (3-hydroxy-4-((2-hydroxy-1-naphthyl)azo)-7-nitronaphthalene-1-sulphonato(3-))(1-((2-hydroxy-5-nitrophenyl)azo)-2-naphtholato(2-))chromate(2-)