Used as a silylating agent in organic synthesis, particularly for the protection of hydroxyl and carboxyl groups during multi-step reactions. Its bulky tert-butoxy groups provide steric shielding, enhancing selectivity and stability of intermediates. Commonly employed in the preparation of complex molecules such as pharmaceuticals and natural products where controlled reactivity is essential. Also serves as a precursor in the synthesis of silicon-based polymers and specialty materials due to its stable disilane backbone and reactive silyl groups.