Quality Standard: 外观Appearance 白色粉末
红外光谱鉴定Infrared spectrometry 和对照品匹配
纯度Purity ≥99.0% (HPLC)
CMC (H2O) ~ 9 mM1 (0.28%)
聚合数量Aggregation Number (H2O)2 ~ 189
dn/dc (H2O)3 0.1562 mL/g
alpha < 2% (HPLC)
pH (0.5% 溶液) 5-8
水溶性Solubility in water at 0-5°C 0.8%
电导系数Conductance (0.5% 溶液) < 40 µS
荧光fluorescence 345 nm < 10%(0.1% 去垢剂溶液)
吸光度Absorbance(1% 去垢剂溶液):
340 nm < 0.1
280 nm < 0.2
260 nm < 0.25
参考资料:
1. Saito, S. and Tsuchiya, T., Biochem. J. 222,
829-832 (1984).
2. Measurement obtained in collaboration with
Professor Mark Foster (University of Akron) under
an experimental services contract
3. Wenk, M. R. and Seelig, J., Biophys. J. 73,
2565-2574 (1997).