Used as a strong alkaline cleaning agent in industrial and commercial settings, especially in drain cleaners and degreasers due to its ability to dissolve fats and oils. Commonly applied in the production of soaps and detergents through saponification of fats. Employed in food processing, such as washing or peeling fruits and vegetables, and in the manufacture of cocoa and chocolate. Utilized in water treatment to adjust pH and neutralize acidic streams. Plays a role in the chemical industry as a reagent in manufacturing fertilizers, pharmaceuticals, and potassium salts. Also found in batteries, particularly alkaline batteries, where it acts as an electrolyte.