Used in molten salt applications due to its high thermal stability and low neutron absorption, making it suitable for nuclear reactor coolants and moderators. Commonly employed in the production of ceramics and glasses, especially for UV optics because of its transparency in the ultraviolet range. Serves as a key component in lithium-ion battery electrolytes when combined with other lithium salts to improve conductivity and stability. Utilized in radiation detection devices, particularly in thermoluminescent dosimeters for measuring ionizing radiation exposure. Also applied in metallurgy as a flux to lower melting points and improve the fluidity of metal mixtures.