白色无定形粉末。有吸湿性,极易吸潮。能迅速吸收空气中的水份和二氧化碳，应置于密封容器内。可溶于无机酸生成盐，不溶于水。有刺激性。
相对密度:6.51
熔点: 2000℃以上
沸点: 4200℃

99.9% metals basis:


外观Appearance                          Colorless Powder
X-射线衍射分析X-Ray Diffraction         Conforms to standard 
纯度Purity                              ≥99.9% Based on Trace Metals Impurities of ICP
盐酸溶解试验solubility in 1 M HCl       Clear to Very Slightly Hazy ，50 mg/ml, 1 M HCl 
痕量金属分析total metallic impurities   ≤2000ppm by ICP Atomic emission



99.99% metals basis:


外观Appearance                          White Powder
X-射线衍射分析X-Ray Diffraction         Conforms to standard
纯度Purity                              ≥99.99% Based on Trace Metals Impurities of ICP
La                                      84.0 - 86.5 % (Complexiometric EDTA)
ICP:                                    Confirms Lanthanum Component Confirmed  
痕量金属分析total metallic impurities   ≤200ppm by ICP Atomic emission
(Al、B、Ba、Ca、Fe、Gd、Ho、Na、Nd、Pr、Sb、Sc、Sm、Tb、Tm、Yb、Zn)


99.999% metals basis:


外观Appearance                          White Powder
X-射线衍射分析X-Ray Diffraction         Conforms to standard
纯度Purity                              ≥99.99% Based on Trace Metals Impurities of ICP
ICP Assay                               Confirms Lanthanum component 
痕量稀土分析rare earth impurities       ≤20ppm by ICP Atomic 

WGK Germany  1 
RTECS  OE5330000
海关编码  28469000 
危险品标志  Xi 
危险类别码  36/37/38-36 
安全说明  26-36-39

主要用于制造摄影机，显微镜，所需各种光学玻璃部件以及光导纤维，可改善折光性质。在电子陶瓷工业以及催化剂制备等方面也有一定的用途。LAMOX快离子导体和超导体的前体
极易潮解，应置于密封容器内。