85391-43-1 Disodium 3-((2-chloro-4-nitrophenyl)azo)-4-hydroxy-7-((2-hydroxy-4-((3-hydroxy-4-((4-((4-nitro-2-sulphonatophenyl)amino)phenyl)azo)phenyl)amino)phenyl)azo)naphthalene-2-sulphonate EINECS 286-797-8