外观Appearance 白色结晶粉末或无色结晶
红外光谱鉴别Infrared spectrometry 和对照品匹配
熔点Melting point 168°C - 172°C
纯度Purity >99% (中和滴定)
水溶性实验Solubility in Water 溶液透明
干燥损失Loss on drying <0.5 % (1 g, 105°C)
重金属Heavy metals (as Pb) <10 ppm
硫酸盐灰分Sulfated ash <0.1 %
比旋光度Specific rotation [a]20/D +12° - +13° (c=20, H2O)
痕量分析Trace analysis:
Cl < 100 ppm
SO4 < 150 ppm
Ca < 200 ppm
比旋光度Specific rotation [a]20/D +12.0 - +13.0 deg(C=20, H2O)(干燥后)
项目 ACS级
(ACS)
外观Appearance 白色结晶
红外光谱鉴别Infrared spectrometry 和对照品匹配
纯度Purity >99.0%
重金属Heavy metals (as Pb) <5 ppm
灼烧残渣Res. after ignition <0.02 %
痕量分析Trace analysis :
Cl < 10 ppm
PO4 < 10 ppm
Fe < 5 ppm
不溶性物质Insoluble matter <0.005 %
草酸盐试验Oxalate(C2O4) (限值 0.1%) 合格
硫酸根Sulfur compounds (as SO4) <0.002 %
品级Grade FCC
FG
外观Appearance 白色结晶粉末
熔点Melt Point ≤173.0 °C
纯度Purity 99.7 - 100.5 % （中和滴定）
红外光谱鉴别Infrared spectrometry 符合
比旋光度Specific rotation [a]20/D 12.0 - 13.0 °(C=20%,H2O)
干燥损失Loss on Drying ≤0.5 %
灼烧残渣Residue on ignition (Ash) ≤0.05 %
Oxylate test Pass
Sulfate Test Pass
痕量分析Trace Metal analysis (as lead) ≤2 ppm
浊度试验Solubility (Turbidity) C=5%H2O 透明
砷Arsenic (As) ≤3 ppm
镉Cadmium (Cd) ≤1 ppm
汞Mercury (Hg) ≤1 ppm
铅Lead (Pb) ≤10 ppm
品级Grade 药用级
(Ph. Eur., BP, USP)
外观Appearance 白色粉末
红外光谱鉴别Infrared spectrometry 和对照匹配
纯度Purity (以干基计） 99.7-100.5%
比旋光度Specific rotation [a]20/D +12.0 to +12.8°, c = 20% in H2O
有机挥发性杂质organic volatile impurities, complies (GC)
残留溶剂residual solvents, complies
重金属heavy metals (as Pb) ≤0.001%
灼烧残渣ign. residue ≤0.05% (as SO4)
干燥损失loss on drying, 105 °C ≤0.2%
氯chloride (Cl-): ≤100 ppm
草酸盐oxalate (C2O42-): in accordance
草酸oxalate (as oxalic acid): ≤100 ppm
硫酸盐sulfate (SO42-): ≤100 ppm
砷As: ≤2 ppm
钙Ca: ≤200 ppm
铜Cu: ≤10 ppm
汞Hg: ≤1 ppm
铅Pb: ≤2 ppm
锌Zn: ≤10 ppm
水溶解试验solubility in water 合格
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