项目 分析纯
(AR)
含量Assay ≥99.0%
氯化物(Cl)Chloride ≤0.005%
络合力试验complexing 合格
氢氧化钠溶解试验Solubility in NaOH 合格
铁Iron(Fe) ≤0.001%
重金属Heavy Metals ≤0.001%
灼烧残渣Ignition residue ≤0.05%
品级Grade 分子生物学级
(grade for molecular biology)
外观Appearance 白色粉末
红外光谱鉴别Infrared spectrometry Conforms to Structure
纯度Purity ≥99.0% (T)
熔点Melting point 240°C - 250°C
灼烧残渣Residue on ignition ≤0.05% (as SO4)
干燥损失loss on drying ≤1.0% , 110 °C
水溶性solubility 0.1 M NaOH: soluble0.1 M at 20 °C, clear, colorless
硫酸根sulfate (SO42-): ≤50 ppm
DNA酶DNases, none detected
RND酶RNases, none detected
蛋白酶proteases, none detected
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