Praseodymium nitrate 
 Molecular formula: Pr (NO3) 3? 6H2O 
 Appearance: green granular crystals. 
 Uses: mainly used for production of catalysts and other Pr compounds. 
 Project specifications analytical instruments 
 Grade Pr (NO3) 3 
 ? 6H2O Pr (NO3) 3 
 ? 6H2O Pr (NO3) 3 
 ? 6H2O Pr (NO3) 3 
 ? 6H2O 
 TREO (wt%) ≥ 38.5-40.0 ≥ 38.5-40.0 ≥ 38.5-40.0 ≥ 38.5-40.0 
 The relative purity of rare earth (wt%) 
 La2O3/TREO ≤ 0.03 ≤ 0.05 ≤ 0.003 ≤ 0.001 ICP spectrometer 
 CeO2/TREO ≤ 0.025 ≤ 0.010 ≤ 0.005 ≤ 0.001 
 Pr6O11/TREO ≥ 99.0 ≥ 99.5 ≥ 99.9 ≥ 99.99 
 Nd2O3/TREO ≤ 0.025 ≤ 0.010 ≤ 0.005 ≤ 0.001 
 Sm6O3/TREO ≤ 0.02 ≤ 0.004 ≤ 0.004 ≤ 0.001 
 Y2O3/TREO ≤ 0.01 ≤ 0.001 ≤ 0.001 ≤ 0.001 
 Non-rare earth impurities (wt%) 
 Fe2O3 ≤ 0.01 ≤ 0.01 ≤ 0.008 ≤ 0.0001 atomic absorption spectrophotometer 
 CaO ≤ 0.08 ≤ 0.10 ≤ 0.008 ≤ 0.0002 
 CI-≤ 0.05 ≤ 0.05 ≤ 0.05 ≤ 0.0005 
 SiO2 ≤ 0.03 ≤ 0.05 ≤ 0.02 ≤ 0.0002 
 Loss on ignition LOI ≤ 3.0 ≤ 2.5 ≤ 2.5 ≤ 2 
 Description: praseodymium nitrate dissolved in water, easily deliquescence in moist air.