General Description of Potassium-hydroxide: CAS :1310--58--3 Strong alkaline white solid or colorless liquid products, Ion-Exchange Membrane process. Main Applications of Potassium-hydroxide : It is widely used in the production of potassium carbonate including KHCO3, potassium soaps,detergents, fine cosmetic, potassium hydrogen phosphate, potassium-permanganate, medical intermediate, liquid fertilizers, synthetic rubber, ABS resin, natural rubber emulsion, paper agent, fermentation,de-sulfuration in petroleum refining, bio-fuel and alkaline battery.