Calcium fluoride is the inorganic compound with the formula CaF2. It is a white insoluble solid. It occurs as the mineral fluorite (also called fluorspar), which is often deeply coloured owing to impurities.
C 3745 (OTTOKEMI) Calcium fluoride, 1-4 mm, 99.99% Cas 7789-75-5 - used to manufacture optical components such as windows and lenses, used in thermal imaging systems, spectroscopy, and excimer lasers.