Direct Violet 51 Dye is a water-soluble coloring agent which is used for cotton, wool, polyamide, and printing applications. It belongs to the class of azo dyes and is known to adhere to the substrate by non-ionic forces. This dye is often used in alkaline or neutral solutions for applying on cellulosic materials. It is insoluble in various organic solvents and has chemical formula C32H27N5Na2O8S2 with a molar mass of 719.7 g/mol. Direct Violet 51 Dye is also suitable for preparation of water-based inks and dyeing leather & paper. It has good affinity for fibers thus ensure easy application.