2,7-Naphthalenedisulfonic acid, 5-amino-4-hydroxy-3-((4-((4-((4-hydroxy-2-(phenylamino)phenyl)azo)phenyl)amino)phenyl)azo)-, sodium salt 5-Amino-3-((4-((4-((2-anilino-4-hydroxyphenyl)azo)phenyl)amino)phenyl)azo)-4-hydroxynaphthalene-2,7-disulphonic acid, sodium salt 83232-40-0 EINECS 280-273-2