Used as an ionic liquid catalyst in organic synthesis, particularly in Friedel-Crafts alkylation and acylation reactions due to its strong Lewis acidity. It facilitates high selectivity and reaction efficiency under mild conditions. Also employed in electrochemical applications and as a solvent for metal chloride systems where low volatility and high thermal stability are advantageous. Its tunable properties make it suitable for biphasic reaction systems, allowing easy product separation and catalyst recycling.