Used as a fluorinated surfactant in fire-fighting foams due to its ability to reduce surface tension and stabilize foam effectively. It enhances the spreading and wetting properties of aqueous film-forming foams (AFFF), allowing them to form a thin film over flammable liquid surfaces, suppressing vapor release and extinguishing fires quickly. Also employed in specialty coatings and polymers to improve water and oil repellency. Its fluorinated chain provides thermal and chemical stability, making it suitable for high-performance industrial applications.