Bismuth(III) fluoride is primarily used in the field of inorganic chemistry as a fluorinating agent. It is employed to introduce fluorine atoms into various organic and inorganic compounds, facilitating the synthesis of fluorinated materials. In the production of specialty glasses and ceramics, it acts as a key component to enhance optical properties and improve durability. Additionally, it finds application in the manufacturing of catalysts, where it aids in promoting specific chemical reactions. Its role in the synthesis of bismuth-based compounds is also significant, particularly in the development of materials for electronic and semiconductor industries. Furthermore, it is utilized in research laboratories for studying fluoride-ion conductivity and related electrochemical processes.