Quality Standard: 纯度Purity ( 以干基计) >99.0% (Titrimetry)
外观Appearance 白色结晶粉末
红外光谱鉴别Infrared spectrometry 符合
干燥损失Loss on drying <3 % (105°C, 16 小时)
重金属Heavy metals (as Pb) <20 ppm
痕量分析Trace analysis :
砷As measure < 3 ppm
硫酸根SO4 measure < 50 ppm
氯Cl measure < 50 ppm
铁Fe measure < 5 ppm
硫酸根PO4 measure < 100 ppm
草酸根C2O4 measure < 100 ppm
还原物Reducing substances <1 % (as dextrose)
品级Grade 药用USP级
(USP)
鉴别实验IDENTITY PASS
干燥损失LOSS ON DRYING ≤ 3.0%
氯离子CHLORIDE ≤ 0.07%
硫酸根SULFATE ≤ 0.05%
砷ARSENIC ≤ 3 PPM (METHOD I)
重金属HEAVY METALS ≤ 0.002% (METHOD II)
还原性物质REDUCING SUBSTANCES ≤ 1.0%
残渣溶剂RESIDUAL SOLVENTS MEETS THE REQUIREMENTS
含量ASSAY 98.0% ~ 102.0% (DRY BASIS)