性状 不溶于水，易溶于无机酸，生成相应的盐类，导电性良好，在600°C时的导电性是Pr2O3的一千万倍。    

备注: 以上描述，仅作参考，并不表示您收到的产品，与此项描述完全相符，产品的出厂标准，请参见质量标准。

质量标准    

99.999% metals basis:

外观Appearance                                 Black powder
X-射线衍射分析X-Ray Diffraction         Conforms to Structure
纯度Purity                                        ≥99.999% Based On Trace Metals Analysis
镨pr (titration with complexometric)      82.0% - 83.0%
总金属杂质Total metallic impurities      20ppm by ICP Atomic emission

99.9% metals basis:

外观Appearance                                 Black powder
X-射线衍射分析X-Ray Diffraction         Conforms to Structure
纯度Purity                                        ≥99.9% Based On Trace Metals Analysis
镨pr (titration with complexometric)      80.7%-85.7%
总金属杂质Total metallic impurities      2000ppm by ICP Atomic emission

50nm 球形，99.5%:

外观appearance                                Brown to black powder
pr (complexometric titration)               80.7%-85.7%
纯度Purity                                       ≥99.5% Based On Trace Metals Analysis
总金属杂质Total metallic impurities     2500ppm by ICP Atomic emission
ICP assay                                        confirms praseodymium component
粒径particle size                              <200 nm (BET)  
测量measurements                             < 50 nm (XRD)

贮存

用途 用作陶瓷釉，镨黄颜料和稀土永磁合金的原料(Dark brown powder, insoluble in water and soluble in mineral acids)。

联合国编号

Risk： R36/37/38-

Safety : S26- S37/39-

Hazard : Xi -