Used as a phase-transfer catalyst in organic synthesis, facilitating reactions between compounds in different phases by transferring ions into organic solvents. Employed in the preparation of quaternary ammonium compounds and as a reagent in methylation processes. Also applied in electrochemistry as a supporting electrolyte due to its good solubility and stability in polar solvents. Additionally, utilized in analytical chemistry for ion-pairing applications and in the synthesis of ionic liquids.