Tetramethyltin is primarily used in the production of tin-based organic compounds, which serve as intermediates in various chemical syntheses. It is also employed in the manufacturing of catalysts for polymerization reactions, particularly in the production of plastics and rubber. Additionally, it finds application in the semiconductor industry for depositing thin films of tin during the fabrication of electronic components. Its role in organic synthesis extends to creating organotin compounds that are utilized as stabilizers in PVC and other polymers. Furthermore, it is used in research and development for studying organometallic chemistry and exploring new catalytic processes.