A water soluble dye which contains a group of Formula : ##STR1## {HEAD ~ The dyes} of {TAIL ~ Formula} can be used to dye materials including natural and artificial textile materials such as wool, silk, polymides and modified polyacrylonitrile fibers 
A water soluble dye which contains a group of Formula : # # STR1 # # { HEAD ~ The dyes } of { TAIL ~ Formula } can be used to dye materials including natural and artificial textile materials such as wool , silk , polymides and modified polyacrylonitrile fibers
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