Used primarily in water fluoridation to help reduce tooth decay in communities. It is added to public water supplies in controlled amounts to maintain optimal fluoride levels. Also employed in the production of aluminum fluoride and synthetic cryolite, which are essential in aluminum manufacturing. Additionally, it serves as a key ingredient in the formulation of various cleaning agents and metal surface treatments, enhancing their effectiveness. In the ceramics industry, it acts as a flux to lower the melting point of materials during production. Its role in industrial applications underscores its versatility and importance across multiple sectors.