2,7-Naphthalenedisulfonic acid, 4-amino-3-((4-(((4-((2,4-diaminophenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-5-hydroxy-6-(phenylazo)-, sodium salt 4-Amino-3-((4-(((4-((2,4-diaminophenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-5-hydroxy-6-(phenylazo)-2,7-naphthalenedisulfonic acid, sodium salt 4-Amino-3-((4-(((4-((2,4-diaminophenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonic acid, sodium salt 72245-56-8 EINECS 276-529-8