Octa(γ-Chloropropyl)POSS is widely used as a functional additive in polymer composites to enhance thermal stability, mechanical strength, and flame retardancy. Its application in coatings and adhesives improves surface hardness and chemical resistance, making it suitable for protective layers in industrial and automotive sectors. In electronics, it is incorporated into encapsulants and insulating materials to provide better thermal management and dielectric properties. Additionally, it serves as a precursor for further chemical modifications, enabling the development of advanced materials with tailored functionalities for specialized applications.