Calcium fluoride

Calcium fluoride (CaF2, CAS 7789-75-5) is an inorganic mineral salt sourced primarily from the naturally occurring mineral fluorite. It is also known commercially as Ho 100, HO 100W, and Irtran 3, and carries no assigned E-code, placing it outside food additive classifications.

In steelmaking and aluminium smelting, CaF2 acts as a flux, lowering the melting point of slag and improving its fluidity to facilitate impurity removal. In the electronics sector, it serves as a source material for producing hydrogen fluoride and synthetic optical components, where its low refractive index and UV transparency are critical to performance.

Calcium fluoride is available in technical and optical grades, supplied as powder or granules to suit different processing requirements. The substance is registered under REACH and must be handled in accordance with applicable EU chemical regulations. Standard packaging includes 25 kg bags and bulk quantities for industrial procurement.