85959-29-1 EINECS 289-021-6 Tetrasodium 4-amino-5-hydroxy-6-((2-methoxy-5-methyl-4-((2-(sulphonatooxy)ethyl)sulphonyl)phenyl)azo)-3-((4-((2-(sulphonatooxy)ethyl)sulphonyl)phenyl)azo)naphthalene-2,7-disulphonate