Used as a reagent in organic synthesis, particularly in the formation of phosphonium salts, which are valuable intermediates in various chemical reactions. It plays a role in the preparation of Wittig reagents, which are essential for the synthesis of alkenes from carbonyl compounds. Additionally, it is employed in the development of organophosphorus compounds, which have applications in materials science, catalysis, and pharmaceuticals. Its reactivity with nucleophiles makes it useful in creating complex molecular structures, contributing to advancements in synthetic chemistry and industrial processes.