Used in the production of fluoropolymers and fluoroelastomers that provide heat, chemical, and weather resistance in industrial applications. Commonly found in surface treatment formulations to impart oil and water repellency on textiles, paper, and leather. Employed in fire-fighting foams due to its ability to form a film that suppresses flammable vapor release. Also utilized in semiconductor manufacturing for etching and cleaning processes where high chemical stability is required. Persistent in the environment, leading to regulatory scrutiny and phase-out in many consumer applications.