Used as a surfactant in firefighting foams due to its ability to repel both oil and water, making it effective in extinguishing fuel-based fires. It is also employed in the production of stain-resistant coatings for textiles and carpets, providing durable protection against spills and dirt. Additionally, it serves as a processing aid in the manufacture of fluoropolymers, enhancing their performance in various industrial applications. Its chemical stability makes it suitable for use in harsh environments, though its environmental persistence has raised concerns, leading to regulatory scrutiny and efforts to find safer alternatives.