Hexafluoroisopropanol (HFIP) is a new type of fluorine-containing compound, which is a highly polar solvent. It is easy to mix with water and many organic solvents, has good thermal stability, and has good UV transmittance. These characteristics make HFIP an ideal solvent in many polymerization systems: HFIP can be used as an intermediate of medical drugs, sevoflurane, an inhalational anesthetic, and also as an intermediate of agricultural chemicals; HFIP can be used as a solvent detergent for electronics; HFIP can dissolve a large part of polymers, such as polyester, polyamide, polyacrylonitrile, etc Because of these properties, polyacetal and hydrolyzed polyethylene ester can be well used in analysis and as regenerant of polymer reuse.