97467-63-5 Chromate(4-), (6-((2,3-dibromo-1-oxopropyl)amino)-4-hydroxy-3-((2-hydroxy-5-nitrophenyl)azo)-2-naphthalenesulfonato(3-))(4-((6-((2,3-dibromo-1-oxopropyl)amino)-1-hydroxy-3-sulfo-2-naphthalenyl)azo)-3-hydroxy-7-nitro-1-naphthalenesulfonato(4-))-, tetrasodium EINECS 306-912-8