1,3,4-Thiadiazolium, 5-(bis(1-methylethyl)amino)-2-((4-(dimethylamino)phenyl)azo)-3-methyl-, methyl sulfate 5-(Diisopropylamino)-2-((4-(dimethylamino)phenyl)azo)-3-methyl-1,3,4-thiadiazolium methyl sulphate 83969-12-4 EINECS 281-589-3