Used as a catalyst in organic synthesis, particularly in esterification, alkylation, and acylation reactions due to its strong acidic properties. It is also employed in the preparation of fine chemicals and pharmaceuticals, where it facilitates the formation of complex molecules. Additionally, it serves as a stabilizer in certain chemical processes and is utilized in research for developing new synthetic methodologies. Its ability to act as a proton donor makes it valuable in promoting various acid-catalyzed transformations.