Selenium tetrachloride is primarily used in organic synthesis as a chlorinating agent. It is effective in introducing chlorine atoms into various organic compounds, making it valuable in the production of chlorinated organic intermediates. Additionally, it serves as a precursor in the preparation of other selenium compounds, which are utilized in specialized chemical reactions and research applications, including the formation of carbon-selenium bonds for pharmaceuticals and specialty chemicals. In the field of materials science, selenium tetrachloride is employed in the synthesis of selenium-containing polymers and semiconductors, contributing to the development of advanced electronic and optoelectronic devices. Due to its high toxicity and reactivity, it requires careful handling and adherence to strict safety protocols. Its role in these applications highlights its importance in both industrial and research settings.