Used in water treatment to adjust pH and neutralize acidic water, preventing corrosion in pipelines. Commonly employed in the production of detergents and soaps due to its ability to soften water by removing calcium and magnesium ions. Utilized in the manufacturing of glass, especially soda-lime glass, where it lowers the melting point of silica. Applied in the pulp and paper industry to maintain alkaline conditions during chemical pulping. Also used in food processing as a buffering agent and in laboratories as a primary standard for acid-base titrations.