Glycerol monooleate is prepared by esterification of commercial oleic acid that is derived either from edible sources or fatty acids. It is a synthetic, biodegradable amphiphilic, lipid compound with many applications. It is a nonionic surfactant , A good general purpose emulsifier having low toxicity characteristics. It is a very useful low HLB co-emulsifier for forming either oil-in-water or water-in-oil emulsions.