Used primarily as an intermediate in the synthesis of organosilicon compounds. It serves in the production of specialty silicones for water-repellent coatings and sealants. Its reactivity with hydroxyl groups makes it valuable in surface treatment of fillers and pigments to improve dispersion in polymer matrices. Also employed in the manufacture of silane coupling agents that enhance adhesion between organic and inorganic materials in composites. Due to the chlorine content, it can participate in further functionalization reactions to tailor silicone properties for specific industrial applications.