Glycerol monostearate is produced by esterification of glycerol containing C16-C18 long chain fatty acids. It is a non-ionic surfactant. It has both hydrophilic and oil-philic groups, and has many functions such as wetting and emulsifying. The pure product is a white waxy solid, which is melted into a transparent liquid when heated, and the freezing point is not lower than 58 ° C. Tasteless, odorless and non-toxic. Soluble in vegetable oil, soluble in hot ethanol, ether chloroform and acetone, insoluble in water. It can emulsify with water and is an oil-in-water emulsifier.