2,7-Naphthalenedisulfonic acid, 5-amino-3-((4-((4-((7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo)phenyl)azo)phenyl)azo)-4-hydroxy-, trisodium salt 5-Amino-3-((4-((4-((7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo)phenyl)azo)phenyl)azo)-4-hydroxy-2,7-naphthalenedisulfonic acid, trisodium salt 52469-75-7 EINECS 257-938-0 Trisodium 5-amino-3-((4-((4-((7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo)phenyl)azo)phenyl)azo)-4-hydroxynaphthalene-2,7-disulphonate