6-((2,4-Diaminophenyl)azo)-3-((4-((4-((7-((2,4-diamino-5-sulphophenyl)azo)-1-hydroxy-3-sulpho-2-naphthyl)azo)-2-sulphophenyl)amino)phenyl)azo)-4-hydroxynaphthalene-2-sulphonic acid, sodium salt 85188-18-7 EINECS 286-208-4