Used as a phase-transfer catalyst in organic synthesis, facilitating reactions between compounds in different phases by improving solubility and reactivity. Employed in the preparation of fine chemicals and pharmaceuticals where mild basic conditions and good leaving group properties are required. Also applied in electrochemical systems as a supporting electrolyte due to its ionic nature and stability in solution. Its relatively low volatility makes it suitable for high-temperature reactions without significant decomposition.

Additionally, utilized as an additive or solvent in the synthesis of organic-inorganic hybrid materials, particularly in the fabrication of perovskite solar cells. It helps control the crystallization of perovskite films to achieve high quality, reduce crystal defects, and improve energy conversion efficiency from light to electricity. Furthermore, it serves as an additive to enhance the stability of organic electronic devices and extend their operational lifespan.