Potassium hydroxide (~85%)（Cat No.:C001053）, commonly known as caustic potash, is a highly alkaline inorganic compound typically supplied as solid pellets containing approximately 85% active KOH and the remainder as water and minor impurities. It is widely used in chemical manufacturing, biodiesel production, soap making, and as an electrolyte in alkaline batteries. In laboratory and industrial settings, it functions as a strong base for neutralization, saponification, and deprotonation reactions. Due to its hygroscopic and corrosive nature, it must be handled with care and stored in airtight containers to prevent moisture absorption and degradation.