| anhydrous, 99.99% (metals basis): 外观Appearance 白色粉末或结晶 红外光谱鉴别Infrared spectrometry Conforms to Structure 纯度Purity ≥99.99% Purity Based On Rare Earth Impurities ICP Assay Confirms Lanthanum Component 痕量稀土分析Trace Rare Earth Analysis ≤200ppm by ICP Atomic emission (Li,K,Ni,Ru,Cs,Mg,Ca,Sr,Ba,Y,U,Ti,Dy,Ce,Si,Cr,Pb,Pr,Er,Mn,Nd,Tm,Fe,Se,Sm,Yb) |