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