质量标准: |
99%,来源,动物毛发: 外观Appearance 白色或无色结晶 红外光谱鉴别Infrared spectrometry 和对照品匹配 纯度Purity >99.0 %(碘量滴定) 水溶解试验Solubility in Water 溶液透明 干燥失重Loss on drying <0.5 % (105°C, 3 hrs) 重金属Heavy metals (as Pb) <10 ppm 硫酸盐灰分Sulfated ash <0.1 % 比旋度Specific rotation [a]20/D +8.2° ~ +9.4°(c=5, 2 N HCl) Cl < 300 ppm SO4 < 200 ppm NH4 < 500 ppm pH 4.5 - 6 (2.5% 水溶液) 来源Origin 动物毛发 品级Grade 非动物源,用于细胞培养 (≥98%, from non-animal source, suitable for cell culture) 外观Appearance 白色结晶粉末 红外光谱鉴别Infrared spectrometry Conforms 干燥损失Loss on Drying ≤0.50 % 灼烧残渣Residue on ignition (Ash) ≤0.05 % 内毒素Endotoxin Level ≤1 EU/mg 细胞培养测试Cell Culture Test Pass 比旋光度Specific rotation [a]20/D 8.0 - 9.5 ° (C = 8 in 1 M HCl) 氯Chloride ≤0.04 % 硫酸根Sulfate ≤0.03 % 铁Iron ≤10.0 ppm 重金属Heavy metals ≤10.0 ppm 铵Ammonium ≤300.0 ppm 砷Arsenic ≤1 ppm 茚三酮阳性物质Ninhydrin positive substances (each) ≤0.5 % 含量Assay 98.0 - 101.0 % 水溶解试验Solubility in water at 20 °C 280 g/l pH 4.5 - 6 来源Origin 发酵 |