品级Grade 分析纯
(AR)
纯度Purity >99.00%(以干基计)
外观Appearance 白色或类白色结晶或粉末
红外光谱鉴别Infrared spectrometry 和对照匹配
干燥失重Loss on drying <3 % (105°C, 4 hrs) (真空)
重金属Heavy metals (as Pb) <20 ppm
还原物Reducing substances <1 % (as dextrose)
品级Grade 药用级
(USP)
鉴别试验IDENTITY PASS
干燥损失LOSS ON DRYING ≤3.0%
重金属HEAVY METALS ≤0.002%
还原性物质REDUCING SUBSTAN ≤1.0%
残留溶剂RESIDUAL SOLVENTS MEETS THE REQUIREMENTS
含量ASSAY 97.0% - 103.0% (DRY BASIS)
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