Lithium hydroxide is an alkali metal hydroxide, also known as anhydrous lithium hydroxide, with the molecular formula LiOH and a molecular weight of approximately 23.95. It is usually colorless monoclinic crystal or white powder, with a spicy taste, strong alkalinity and corrosiveness, a density of 1.46g/cm ³, a melting point of 450-471 ℃, and a boiling point of 924 ℃ (decomposition). Easy to dissolve in water, with a solubility of 12.9g/100ml in water at 25 ℃, and slightly soluble in ethanol. Lithium hydroxide is a medium strong base that can undergo neutralization reactions with acids; It can also react with salt to generate another base, which can decompose into lithium oxide at high temperatures; Lithium hydroxide also has deliquescence and can absorb carbon dioxide from the air to form lithium carbonate.

physical property:

Density: 1.43g/cm3

Melting point: 462 ℃

Boiling point: 925 ℃

Appearance: White crystalline powder

Solubility: soluble in water, slightly soluble in ethanol

chemical property

Color reaction:

It can turn purple litmus test solution blue and colorless phenolphthalein test solution red, and its concentrated solution has been experimentally verified to denature phenolphthalein, causing the solution to change from red to colorless (similar to concentrated NaOH).