... 4.free sample Water-soluble dyeSolvent Green 71,C.I. Dye Index No:C.I.590402,Color Light: Yellowish Green3,Foreign ... ----DyStarPyranine----KKKSpectra Pironine conc----SCC4.The application of water-soluble dye as follows:water soluble dyehas strong yellow florescence in alkali ... than 9-10 in the ink formula; and water-soluble dye has strength of 120%, good water solubility and no precipitation ...