Product name: didymium oxide / praseodymium-neodymium oxide Molecular Formula: (PrNd)xOy Properties:gray and brown powder,hygroscopic,insoluble in water but soluble in acids,density 6.88g/cm3,metling point 2042℃. Uses & Applications:raw material for PrNd alloy,glass and ceramics,colorant,catalyst,polishing powder,MRI,permanent magnetic motors etc. Purity: (PrNd)xOy/TREO≥99.5-99.9% TREO≥99% LOI≤1% Non Rare Earth Impurities: Fe2O3≤400ug/g Al2O3≤300ug/g SiO2≤300ug/g Cl-≤130ug/g