。

白色、溶于水、无刺激性、微甜、低吸湿性的结晶颗粒。具有极佳的物理学、化学和微生物学稳定性以及与活性成份的低反应性。

项目                                      药用级
                                    （Ph Eur,USP,NF,JP）

外观Appearance                          White Powder
红外光谱鉴别Infrared spectrometry       Conforms to Structure
水分Water (by Karl Fischer)             4.0- 6.0 %
比旋光度Specific rotation [α]20/D       +48.0°～ +52.0°(C=2, c = 4.5%, H2O and NH4OH)（As Anhydrous)
灼烧残渣Residue on ignition (Ash)       ≤0.03 %
不溶物Insoluble matter                  ≤0.005 %
葡萄糖Dextrose                          Pass
铁Iron (Fe)                             ≤5 ppm
重金属Heavy Metal (As Pb)               ≤5 ppm

项目                                      分析纯
                                          （AR）
纯度Purity(HPLC)                        ≥98.0 %
比旋光度Specific rotation [a]20/D       +52.2 to +52.8 °(C=10, H2O)
水溶解试验Solubility in Water           almost transparency
水分Water(Karl Fischer)                 4.5 - 5.5 %