Used in glass manufacturing as a flux to lower the melting point of silica, making the production process more energy-efficient. Widely applied in water treatment to adjust pH levels and soften water by removing calcium and magnesium ions. Essential in the production of detergents and cleaning agents due to its ability to break down grease and suspend dirt in water. Employed in the pulp and paper industry to maintain alkaline conditions during processing. Also utilized in the chemical synthesis of various sodium compounds and in neutralization processes in industrial settings.