Chemours Opteon R-1234yf Automotive Refrigerant With UV Leak Detect helps save mobile AC professionals and DIYers time and money by combining the application of UV Leak Detect and refrigerant into one step! R1234yf is a known and trusted refrigerant used by automotive service technicians around the world. Made in the USA! This 12 ounce self-seal can is compatible with most self-seal can tools and accessories. The Chemours Company is a 200 year old company, created from the DuPont. Chemours has provided safe, high-quality, high-performance and reliable refrigerant solutions to the automotive industry and beyond. Chemours pioneered much of the technology that makes refrigeration possible today, starting with Freon(TM) refrigerants over 85 years ago, and continue to innovate with the introduction of low global warming potential Opteon(TM) refrigerants. Based on new hydrofluorolefin (HFO) technology, our Opteon(TM) portfolio of refrigerants meets the increasingly stringent global regulations while in many cases delivering improved performance compared to products they replace.