Used primarily as a surface modifier and coupling agent in silicone-based formulations. Enhances adhesion between organic polymers and inorganic substrates, especially in coatings, sealants, and adhesives. Improves water repellency and durability in construction materials and protective coatings. Also employed in the synthesis of specialty siloxane polymers for personal care products, providing improved spreadability and skin feel. Its unique polyether-silane structure offers compatibility with both polar and non-polar systems, making it useful in emulsion stabilization and surfactant applications.