Widely used in laundry detergents and cleaning products due to its strong ability to remove oil and dirt from fabrics and surfaces. Effective in hard water because of its stability in the presence of calcium and magnesium ions. Commonly found in household and industrial cleaning formulations, including liquid soaps, dishwashing agents, and industrial degreasers. Frequently used as a reference standard in analytical testing to ensure quality and consistency in surfactant-based products. Also applied in laboratory settings for protein separation in SDS-PAGE electrophoresis due to its uniform negative charge and denaturing properties.