Used primarily in the aluminum industry as a flux to lower the melting point of alumina during the electrolytic production of aluminum. It enhances the efficiency of the smelting process by reducing energy consumption. Also employed in the manufacturing of ceramics and glass, where it acts as a flux to improve the melting properties and final quality of the products. In some cases, it is utilized in the synthesis of other fluorine-containing compounds due to its ability to release fluoride ions. Additionally, it finds application in certain chemical processes as a catalyst or reagent.