Lithium hydroxide is a kind of inorganic substance, the chemical formula is LiOH, is a white monoclinic fine crystal, has a spicy taste, a strong alkaline, pKb = -0.04. It can absorb carbon dioxide and water in the air, soluble in water, the solubility is 12.8g/100gH2O at 20 degrees Celsius, slightly soluble in ethanol, insoluble in ether. 1 mole per liter of solution has a pH of about 14. Relative density (water =1) 1.45 [3], melting point 471℃ (anhydrous), boiling point 925℃ (decomposition), corrosive. There are two forms of anhydrous substance and monohydrate. Purpose: 1. Lithium hydroxide can be used as a spreading agent and lubricating oil for spectral analysis. The additive of alkaline battery electrolyte can increase the battery capacity by 12% to 15% and improve the service life by 2 to 3 times. 2. Lithium hydroxide can be used as an absorber of carbon dioxide, which can purify…