Used as a highly reactive triflating agent in organic synthesis, particularly for introducing trifluoromethylsulfonyl (triflyl) groups into nucleophilic substrates. Its strong electron-withdrawing nature enhances electrophilicity, making it effective in catalyzing Friedel-Crafts-type reactions and modifying aromatic systems under mild conditions. Commonly applied in the preparation of functionalized fluorinated compounds for pharmaceuticals, agrochemicals, and advanced materials where stability and lipophilicity are critical. Also serves as a precursor in the synthesis of ionic liquids and electroactive compounds due to its robust thermal and chemical stability.