碳酸镧（III） 水合物

碳酸镧为白色粉未，一般均含有一定的水合水分子。是斜方晶系，能和大多数酸反应，在25℃水中溶解度2.38×10-7mol/L。在900℃时可热分解为三氧化二镧。在热分解过程可产生碱式盐La2O3·2CO2·2H2O。碳酸镧可与碱金属碳酸盐生成可溶于水的碳酸复盐La2（CO3）3·Na2SO4·nH2O。向可溶性的镧盐的稀溶液中加入略过量碳酸铵即可制得碳酸镧沉淀。

99.9% metals basis:


外观Appearance                          White Powder to Crystalline Powder
X-射线衍射X-Ray Diffraction             Conforms to Structure
纯度Purity                              ≥99.9% Based on Trace Metals Impurities
ICP Major Analysis                      Confirms La Component
镧La by Complexiometric EDTA            50% - 60%
总金属杂质total metallic impurities     ≤1000ppm by ICP Atomic emission


99.99% metals basis:


外观Appearance                          White Powder to Crystalline Powder
X-射线衍射X-Ray Diffraction             Conforms to Structure
纯度Purity                              ≥99.99% Based on Trace Metals Impurities
ICP Major Analysis                      Confirms La Component
镧La by Complexiometric EDTA            50% - 60%
总金属杂质total metallic impurities     ≤200ppm by ICP Atomic emission

主要用作生产镧的中间化合物，可作为氯化镧、氧化镧及其它镧化合物的原料。