钆双胺， 钆双胺USP2999%以上122795-43-1、131410-48-5DescriptionA white or almost white crystalline powderClarity of solutionConforms the standardIdencificationA:Infrared absorption shouldconforms with standard spectrumB: The maximum absorptionAt the relevant wavelength specifiedMicrobial limits500cfuBacterial endotoxins＜3.5Eu/mgWater3.0%- 14.0%Limit of free gadolinium≤0.3%(anhydrous basis)Limit of free Diethylenetramine pentaacctic aoid bismethylamide≤0.7%(anhydrous basis)Limit of methylamine≤0.05%Limit of acctoneethyl alcohol isopropyl alcohol≤0.2%(Sum of all)Acetone≤0.2%Ethyl alcohol≤0.2%Isopropyl alcohol≤0.2%Total impurity≤0.2%Related comoudsImpurity A≤2.0%Impurity B≤2.0%Individual Impurity≤0.2%Total impurity(except of impurity A and B≤0.5%Content of gadolinium26.0%-29.0%Assay97.0%-103.0%