Name: lanthanum oxide, Lanthanum Oxide, CAS No. 1312-81-8. Physical and Chemical Properties: Molecular weight 325.84, white amorphous powder. Density 6.51g/cm3. Melting point 2217 ℃, boiling point 4200 ℃, slightly soluble in water, soluble in acid and generate the corresponding salts. Exposed in air, easy to absorb carbon dioxide and water, has gradually become lanthanum carbonate. Application: Lanthanum is widely used, if applied to a piezoelectric material, electric materials, thermoelectric materials, magnetoresistive materials, luminescent materials (blue pink), hydrogen storage materials, optical glass, laser materials, various alloy materials. It is also applied to the preparation of a catalyst for many organic chemical products, light is converted agricultural film also uses lanthanum, in foreign countries, scientists lanthanum effect on crops given "super calcium" reputation.