BF3, or boron trifluoride, is a chemical compound composed of one boron atom and three fluorine atoms. It is a colorless gas at room temperature and has a pungent odor. BF3 is commonly used as a Lewis acid in various chemical reactions, particularly in organic synthesis and catalysis. In addition to its role in chemistry, BF3 is also utilized in the production of certain fluorinated compounds. It can react with water, forming boric acid and hydrofluoric acid, which are both hazardous. Proper safety measures are essential when handling BF3 due to its toxic and corrosive nature.