更新时间:2016-05-30
L-脯氨酸,公司新批次、批号生化试剂出货了,公司现货直销,*直供,公司不同规格、多种纯度供应!
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L-脯氨酸
L-Proline
Cas 号: 【147-85-3】 M D L: MFCD00064318
L-脯氨酸分子式: C5H9NO2 分子量: 115.13
别 名: L-氢化吡咯甲酸
(S)-Pyrrolidine-2-carboxylic acid
L(-)-Proline
H-Pro-OH
99% 25g
99% 100g
99% 500g
99% 1kg
性 状: 无色针状或斜方结晶。无气味。微有甜味。有吸湿性。与水合茚三酮反应呈,被冰乙酸酸化后则显红色。易溶于水和乙醇、丁醇和异丙醇,溶于无机酸。
。水中溶解度:1623g/L (25°C),乙醇溶解度: 67g/100mL (19°C)。
熔点: 228-233 °C
[a]20/D: -85.5° (c=4, H2O)
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Purity 99.0 - 101.0 %
干燥损失Loss on drying <0.3 % (105°C, 3 小时)
重金属Heavy metals (as Pb) <10 ppm
其它氨基酸Other amino acids <0.5 % (TLC)
比旋度Specific rotation [a]20/D -84.5°~ -86.8°(c=4, H2O)
痕量分析Trace analysis :
氯Cl < 200 ppm
砷As < 1 ppm
氨基NH4 < 200 ppm
铁Fe < 10 ppm
透光度Transmittance >95 % (c=10, H2O, 430 nm) 1 cm cell
pH 5.5 ~ 7 (2.5% 溶液, 25°C)
贮 存: 密封避光保存
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