2,7-Naphthalenedisulfonic acid, 5-((2,4-dihydroxy-3-((2-hydroxy-5-nitrophenyl)azo)-5-((4-nitrophenyl)azo)phenyl)azo)-4-hydroxy-3-((4-nitrophenyl)azo)-, disodium salt 2-((2-Hydroxy-5-nitrophenyl)azo)-6-((4-nitrophenyl)azo)-4-((2,7-disulfo-5-hydroxy-6-((4-nitrophenyl)azo)-4-naphthyl)azo)-1,3-benzenediol, disodiumsalt 67786-23-6 Disodium 5-((2,4-dihydroxy-3-((2-hydroxy-5-nitrophenyl)azo)-5-((4-nitrophenyl)azo)phenyl)azo)-4-hydroxy-3-((4-nitrophenyl)azo)naphthalene-2,7-disulphonate EINECS 267-095-0