66261-70-9 EINECS 266-284-5 Trisodium 2-((4-((4-((4-chloro-6-phenyl-1,3,5-triazin-2-yl)amino)-7-sulphonato-1-naphthyl)azo)-2,5-dimethylphenyl)azo)benzene-1,4-disulphonate