Hexachlorodisiloxane is primarily used in the production of silicon-based materials, particularly in the synthesis of silicones and siloxanes. It serves as a key intermediate in the manufacture of various silicone polymers, which are widely applied in industries such as automotive, construction, and electronics. The compound is also utilized in the preparation of specialty coatings and adhesives, where its reactivity with other chemicals helps create durable and heat-resistant products. Additionally, it plays a role in the development of high-purity silicon compounds for semiconductor manufacturing, contributing to advancements in electronic devices and integrated circuits.