Used extensively in the manufacturing of soaps and detergents, it acts as a saponification agent to convert fats and oils into soap. In the food industry, it serves as a pH regulator and is employed in processes like cocoa production and olive curing. It is also utilized in biodiesel production as a catalyst for transesterification, converting fats and oils into biodiesel and glycerol. In the chemical industry, it is a key component in the production of potassium salts, fertilizers, and various chemicals. Additionally, it is used in cleaning and sanitizing applications, particularly for removing grease and organic residues. In laboratories, it is a common reagent for pH adjustment and chemical synthesis.