Di-p-tolyldichlorosilane is used in the synthesis of organosilicon compounds as a key intermediate in the production of various silicones, such as silicone rubber, silicone oils, and surface coatings. It is commonly employed as a starting material or reactant in polymerization processes. The functional chlorine groups readily react with water or alcohols, making it suitable for forming siloxane (Si-O-Si) structures. Additionally, it finds applications in materials science research to enhance surface properties, including moisture resistance and adhesion.