White powder, molecular weight of 73.89, relative density 73.89, melting point 618 ℃.Soluble in acid, slightly soluble in water and in cold water solubility under hot water, insoluble in alcohol and acetone and other organic solvents. Supply the purity of 99.99%, used for making various kinds of lithium compounds, can also be used in the preparation of a chemical reaction in catalyst, also have application in lithium ion batteries.