Used as a phase-transfer catalyst in organic synthesis, facilitating reactions between compounds in different phases. It is particularly effective in the synthesis of complex organic molecules, including pharmaceuticals and agrochemicals. The compound is also employed in the preparation of phosphonium salts, which are useful in various chemical transformations. Additionally, it serves as a reagent in the Wittig reaction, enabling the formation of alkenes from aldehydes and ketones. Its application extends to material science, where it is used in the development of advanced polymers and coatings.