Heptamethyldisilazane is widely used as a silylating agent in organic synthesis, particularly for protecting hydroxyl groups during chemical reactions. It is also employed in the production of semiconductors and electronics, where it acts as a surface modifier to improve the adhesion of photoresists and other materials. In the pharmaceutical industry, it is utilized to enhance the stability and solubility of certain drugs. Additionally, it serves as a key reagent in the synthesis of silicone polymers, contributing to their unique properties. Its ability to react with moisture makes it valuable in moisture-sensitive applications, such as in the preparation of anhydrous environments or materials.