Direct Red 81 Dye is water soluble in nature and shows slight solubility in alcohol but insoluble in other organic solvents. It is used for dyeing paper, viscose, & cotton with a good bond with the substrate. This dye is completely free from any impurities and assures good levelness and colorfastness. It has molecular formula C29H19N5Na2O8S2 with a molar mass of 675.6 g/mol. Direct Red 81 Dye is completely non-toxic in nature and assures quick & easy application. It can be availed at reasonable rates in large quantities as requested by our respected clients.