Chemical properties white rhombic crystal or powder; Soluble in water, ethanol, acetone and other solvents. Uses Sodium thiocyanate can be used as polyacrylonitrile fiber drawing solvent, color film washing agent, some plant defoliants, and airport road herbicides, but also used in pharmaceutical, printing and dyeing, rubber treatment Chemicalbook, black nickel plating, color film, pesticide and other industries; It is also used as an antifungal preservative. Gb2760-2001 specifies that the combination with hydrogen peroxide is used for raw milk preservation, and it can also be used as an analytical reagent, such as the determination of niobium in steel and the determination of silver, copper, iron, and the manufacture of organic thiocyanate.