Kaltsiumfluoriid

Kaltsiumfluoriid is an inorganic compound with the chemical formula CaF2. It is a crystalline solid, typically white, and is the primary source of the element fluorine. Naturally occurring kaltsiumfluoriid is known as the mineral fluorspar. It is relatively insoluble in water and acids, but soluble in concentrated sulfuric acid.

The structure of kaltsiumfluoriid is characterized by a cubic crystal lattice. It exhibits piezoelectric properties, meaning it can generate an electric charge in response to applied mechanical stress. It also possesses high transparency to ultraviolet radiation, making it useful in optical applications.

Industrially, kaltsiumfluoriid is a crucial raw material. It is used in the production of hydrofluoric acid, which is essential for manufacturing a wide range of fluorochemicals, including refrigerants, plastics, and pharmaceuticals. It also finds application as a flux in metallurgy to lower the melting point of materials and improve their fluidity. In the ceramics and glass industries, it is used as an opacifier. Furthermore, kaltsiumfluoriid is a common additive in toothpaste and drinking water as a source of fluoride, helping to prevent tooth decay.