Used as a key intermediate in the synthesis of fluorinated surfactants and surface treatment agents. Its hydrophobic and oleophobic properties make it suitable for formulations in fire-fighting foams, where it helps form a stable aqueous film that suppresses fuel vapors. Also employed in coatings for textiles and paper to provide water, oil, and stain resistance. Due to the perfluoroalkyl chain, it imparts durability and chemical resistance in industrial applications, though environmental persistence has led to reduced use in consumer products.