Used as a strong alkaline cleaning agent in industrial and commercial settings, particularly in drain cleaners and degreasers due to its ability to dissolve fats and oils. Commonly employed in the production of soaps and detergents through saponification of fats. Utilized in pH control for water treatment and various chemical manufacturing processes. Plays a key role in the food industry for washing or peeling fruits and vegetables, and in the preparation of certain foods like cocoa and chocolate. Also used in batteries, especially alkaline batteries, as an electrolyte. Widely applied in laboratories for titrations and other analytical procedures requiring a strong base.