Phosphoric acid, isooctyl ester is primarily used as a surfactant and emulsifier in various industrial applications. It is commonly employed in the formulation of lubricants and metalworking fluids, where it helps to reduce friction and improve the performance of the machinery. Additionally, it is utilized in the production of coatings and paints, where it acts as a dispersing agent to ensure even distribution of pigments and other components. In the agricultural sector, it serves as an additive in pesticide formulations to enhance their effectiveness. The compound is also found in certain cleaning products, where it aids in breaking down grease and grime. Its ability to act as a stabilizer in plastics and polymers makes it valuable in the manufacturing of durable materials.