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- 熔点:274-275℃
比旋光度:-75.5°
质量标准
外观Appearance白色结晶或结晶粉末
红外光谱鉴别Infrared spectrometry 和对照品匹配
纯度Purity99.0 - 101.0 %
干燥损失Loss on drying<0.2 % (105°C, 3 小时)
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 -74°~ -77°(c=5, H2O)
痕量分析Trace analysis:
氯Cl < 200 PPM
硫酸根SO4< 200 PPM
氨离子NH4< 200 PPM
铁Fe < 10 PPM
透光率Transmittance>95 % (c=10, H2O, 430 nm) 1 cm cell
其它氨基酸Other amino acids <0.5 % (TLC)
贮存
用途:用作生化试剂。
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