Lithium hydroxide is an inorganic compound with the chemical formula LiOH. It is a white crystalline powder. It is soluble in water and slightly soluble in ethanol. It is highly alkaline. The pH of a 1mol/L solution is about 14, pKb = -0.04. Mainly Used to prepare lithium salts and lithium-based greases, electrolytes for alkaline batteries, lithium bromide refrigerator absorbent, etc.