Used in textile industry as a leveling agent in dyeing processes, particularly for wool and silk, to ensure uniform color distribution. Employed in the manufacturing of detergents and cleaning agents due to its water-softening properties. Acts as a source of sulfate ions in chemical synthesis and laboratory applications. Historically used in cold packs for its endothermic dissolution in water, providing a cooling effect. Also utilized in some pharmaceutical formulations as an excipient to improve stability or solubility of active ingredients.