84560-10-1 EINECS 283-198-3 Tetrasodium 5-(acetamido)-3-((4-((4-((8-(acetamido)-1-hydroxy-3,6-disulphonato-2-naphthyl)azo)-5-methoxy-o-tolyl)azo)phenyl)azo)-4-hydroxynaphthalene-2,7-disulphonate