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