Used as a phase-transfer catalyst in organic synthesis, facilitating reactions between compounds in different phases. It is particularly effective in the preparation of organic compounds, including the synthesis of ethers and esters. Also employed in the Wittig reaction to form alkenes from aldehydes or ketones, making it valuable in the production of fine chemicals and pharmaceuticals. Its role in polymerization processes helps in creating specific polymer structures with desired properties. Additionally, it is utilized in the development of advanced materials, such as liquid crystals and coatings, due to its ability to modify surface properties.