无色粒状结晶，易溶于水和醇，在潮湿空气中易潮解。 

品级Grade                               分析纯   
                                        (AR) 
外观Appearance                          white crystals or crystalline powder 
红外光谱鉴别Infrared spectrometry       Conforms to Structure
纯度Purity                              ≥99.0% (T)  
氯chloride (Cl-):                       ≤50 ppm 
硫酸根sulfate (SO42-):                  ≤50 ppm 
  Ca:                                   ≤50 ppm 
  Cd:                                   ≤5 ppm 
  Co:                                   ≤5 ppm 
  Cr:                                   ≤5 ppm 
  Cu:                                   ≤5 ppm 
  Fe:                                   ≤10 ppm 
  K:                                    ≤10 ppm 
  Mg:                                   ≤5 ppm 
  Mn:                                   ≤5 ppm 
  Na:                                   ≤10 ppm 
  Ni:                                   ≤5 ppm 
  Pb:                                   ≤10 ppm 
  Zn:                                   ≤5 ppm


99.9% metals basis:


外观Appearance                          White Powder, Crystals or Chunks
X-射线衍射分析X-Ray Diffraction         Conforms to standard 
纯度Purity                              ≥99.9% Based On Rare Earth Analysis
ICP:                                    Confirms Lanthanum Component Confirmed 
La                                      ≥31.3 % (Complexometric EDTA) 
痕量金属分析Trace Rare Earth Analysis   ≤2000ppm by ICP Atomic emission
(Ba、Y、Tb、Dy、Ce、Pb、Pr、Se、Sm、Yb) 




99.99% metals basis:


外观Appearance                          White Powder, Crystals or Chunks
X-射线衍射分析X-Ray Diffraction         Conforms to standard 
纯度Purity                              ≥99.99% Based On Rare Earth Analysis
ICP:                                    Confirms Lanthanum Component Confirmed 
La                                      ≥31.3 % (Complexometric EDTA) 
痕量金属分析Trace Rare Earth Analysis   ≤200ppm by ICP Atomic emission
(Ba、Y、Tb、Dy、Ce、Pb、Pr、Se、Sm、Yb) 

危险品标志  O,Xi 
危险类别码  8-36/37/38 
安全说明  17-26-36-37/39 
危险品运输编号  UN 1477 5.1/PG 2
WGK Germany  3
RTECS  OE5250000
HazardClass  5.1 
PackingGroup  III 
海关编码  28469000 

用于镧钨、镧钼阴极材料，三元催化剂，石油化工，汽灯纱罩添加剂，硬质合金，难熔金属等其它工业。 
极易潮解，应置于密封容器内