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)

联合国编号 
Risk：  R36/37/38- 
Safety :  S26- S37/39- 
Hazard :  Xi -

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)。