Sodium hexafluoroferrate(III) is primarily used as an additive in the aluminum production process to lower the melting point of the electrolyte solution and enhance the efficiency of the electrolysis process. It is also employed in the ceramics industry to improve the physical properties of products, such as strength and durability. In water treatment, it acts as an aid in removing contaminants like phosphates, heavy metals, and other impurities from industrial wastewater, making the water safer for discharge or reuse. Additionally, it serves as a catalyst or starting material in the production of other chemicals. In the electronics field, it is utilized in manufacturing specialty glasses and ceramics to enhance durability and environmental resistance. Its unique properties also make it suitable for certain batteries and electrochemical systems, contributing to improved performance and stability.