Lithium fluoride, white powder at room temperature. Slightly soluble in water, insoluble in alcohol, soluble in acid. It is mainly used to prepare lithium ion battery electrolyte lithium salt hexarofluorophosphate. It can also be used as an analytical crystal in the wavelength analysis X -ray fluorescent spectrum. It is also used as a desiccant, aid agent, and can also be used in the enamel industry and optical glass manufacturing.