Cas号7440-54-2分子式Gd分子量157.25别名钆，钆粉末纯度AppearanceGreypowderICP痕量分析ICPtraceanalysis(REO)≤2000ppmICP分析ICPassayConfirmsgadoliniumcomponent纯度PuritybasedontraceREOimpurities≥99.9%)