Caustic Potash, also known as Potassium Hydroxide or LYE (3 letters), is a highly alkaline substance used in a variety of industrial and commercial applications. It is a white, odorless solid that is soluble in water and has a wide range of uses, including soap-making, detergent production, and food processing. Caustic Potash is also used in the production of biodiesel fuel, as well as in the manufacture of paper, textiles, and pharmaceuticals.