Used primarily in the production of fluoropolymers, it acts as a processing aid to enhance the manufacturing of materials like PTFE (polytetrafluoroethylene). These fluoropolymers are widely applied in non-stick coatings for cookware, waterproof and breathable fabrics, and electrical insulation. Additionally, it serves as a surfactant in firefighting foams, particularly effective against flammable liquid fires. Its water and oil repellent properties also make it valuable in coatings for textiles, paper, and leather, providing stain resistance and durability. However, its use has declined due to environmental and health concerns, leading to stricter regulations and the development of safer alternatives.