Widely used as a superacid catalyst in organic synthesis due to its strong acidic properties. It facilitates various reactions, including esterifications, alkylations, and polymerizations, often at lower temperatures and with higher efficiency. In the pharmaceutical industry, it is employed to synthesize complex molecules and intermediates. It also serves as an electrolyte in fuel cells and batteries, enhancing conductivity and performance. Additionally, it is utilized in the production of specialty chemicals and materials, such as liquid crystals and polymers, where its stability and reactivity are advantageous.