4-Amino-6-((5-((4,6-dichloro-1,3,5-triazin-2-yl)amino)-2-sulphophenyl)azo)-3-((2,5-disulphophenyl)azo)-5-hydroxynaphthalene-2,7-disulphonic acid 61433-40-7 EINECS 262-785-8