2,7-Naphthalenedisulfonic acid, 5-((2,4-dihydroxy-5-((4-nitrophenyl)azo)phenyl)azo)-4-hydroxy-3-((2-hydroxy-3,5-dinitrophenyl)azo)-, disodium salt 4-((2,4-Dihydroxy-5-((4-nitrophenyl)azo)phenyl)azo)-5-hydroxy-6-((2-hydroxy-3,5-dinitrophenyl)azo)-2,7-naphthalenedisulfonic acid, disodium salt 68155-63-5 Disodium 5-((2,4-dihydroxy-5-((4-nitrophenyl)azo)phenyl)azo)-4-hydroxy-3-((2-hydroxy-3,5-dinitrophenyl)azo)naphthalene-2,7-disulphonate EINECS 268-975-7