Oleic anhydride is widely used in the synthesis of esters, particularly in the production of lubricants and plasticizers. Its ability to react with alcohols to form oleate esters makes it valuable in creating compounds that enhance the flexibility and durability of plastics. Additionally, it is employed in the manufacturing of surfactants and emulsifiers, which are essential in various industrial and cosmetic formulations. In the pharmaceutical industry, it serves as an intermediate in the synthesis of certain drugs and active ingredients. Its hydrophobic properties also make it useful in coatings and waterproofing applications. Furthermore, oleic anhydride is utilized in research and development for modifying surfaces and creating specialized chemical derivatives.