Cas号7440-10-0分子式Pr分子量140.90别名PraseodymiumMetalX-射线衍射分析X-RayDiffractionConformstoStructure纯度Purity≥99.0%BasedonTraceMetalsImpuritiesofICPICPAssayConfirmsPraeseodymiumcomponent痕量金属分析totalmetallicimpurities≤10000ppmbyICPAtomicemission)