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白色或极微黄色结晶，有芳香气味，露置湿空气中逐渐氧化，对湿敏感，受光影响。水中溶解度:10 g/L (25°C)，1g溶于100ml水、16ml80℃热水、约20ml甘油。易微溶于水，溶于醇、氯仿、醚、二硫化碳、冰乙酸、吡啶及碱液中，也溶于油类和氢氧化碱溶液，溶液对石蕊呈酸性。低毒，半数致死量（大鼠，经口）1580mg/kg。有刺激性。
密度：1.056
熔点：81～84℃
沸点： 285℃

Q/(HG)SJ 021-91
项目Item                                  分析纯      化学纯
                                           (AR)        (CP)
含量(C₈H₈O₃)Assay,%                     ≥ 99.0        98.0
熔点范围Melting renge,℃               81.5-82.5     81.5-82.5
灼烧残渣(以硫酸盐计)Ignition residue,%  ≤ 0.05         0.1
碱溶解试验Solubility in alkali             合格        合格
乙醇溶解试验Solubility in ethanol          合格        合格    


天然香兰素 ：
Natural，≥99%, FCC, Kosher, FG:


外观Appearance                          White to Faint Yellow Crystalline Powder
红外光谱鉴别Infrared spectrometry       Conforms to Structure
纯度Purity(GC)                          ≥98.0%
起熔点Initial Melting Point             81 °C
终熔点Final Melting Point               83 °C
醇溶解试验solubility in 95% ETOH        Clear Colorless (1g/1ml,95% ETOH)  
酸值Acid Value                          ≤2.00
砷Arsenic (As)                          ≤3 ppm
镉Cadmium (Cd)                          ≤1 ppm
汞Mercury (Hg)                          ≤1 ppm
铅Lead (Pb)                             ≤10 ppm
干燥损失Loss on Drying                  ≤0.5 %
灼烧残渣Residue on ignition (Ash)       ≤0.05 %

外观: 白色至淡黄色结晶粉末
香气: 典型的香子兰香气

≥99%, FCC, FG：


grade                                   FCC FG Halal Kosher NI
外观Appearance                          White to Faint Yellow Crystalline Powder
红外光谱鉴别Infrared spectrometry       Conforms to Structure
纯度Purity(GC)                          ≥99.0%
起熔点Initial Melting Point             81 °C
终熔点Final Melting Point               83 °C
醇溶解试验solubility in 95% ETOH        Clear Colorless (1g/1ml,95% ETOH)  
酸值Acid Value                          ≤2.00
砷Arsenic (As)                          ≤3 ppm
镉Cadmium (Cd)                          ≤1 ppm
汞Mercury (Hg)                          ≤1 ppm
铅Lead (Pb)                             ≤10 ppm
干燥损失Loss on Drying                  ≤0.5 %
灼烧残渣Residue on ignition (Ash)       ≤0.05 %