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L-谷氨酸
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更新时间:2016-06-17  |  阅读:1040

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L-谷氨酸
L(+)-Glutamic acid
Cas 号: 【56-86-0】 M D L: MFCD00002634
L-谷氨酸分子式: C5H9NO4;HO2CCH2CH2CH(NH2)CO2H 分子量: 147.13
别 名: L-2-氨基戊二酸;L-α-氨基戊二酸
L-Glutamic acid
(S)-2-Aminopentanedioic acid
Glu
99% 100g
99% 500g
99% 1kg
性 状: 白色结晶性粉末、几乎无臭 , 有特殊滋味和酸味。难溶于水,溶于12分水,1500分醇,40分二氧六环,不溶于丙酮、氯仿、乙醇、冷乙酸,极易溶于甲酸。200℃开始升华,247-249℃分解。饱和水溶液的PH值约3.2。溶解度(g/100g 水);0.72(20℃),1.51(40℃),3.17(60℃),6.66(80℃)。
密度:1.538
熔点:205 °C
质量标准: 外观Appearance 白色粉末
红外光谱鉴别Infrared spectrometry 和对照品匹配
纯度Purity ≥99% (以干基计)
干燥损失Loss on drying <0.5 % (105°C, 3 小时)
重金属Heavy metals (as Pb) <10 ppm
其它氨基酸Other amino acids 未检测到
比旋度Specific rotation [a]20/D +30.5°~ +32.5°(以干基计) (c=10, 2N HCl)
痕量分析Trace analysis :
Cl < 200 ppm
Fe < 30 ppm
SO4 < 300 ppm
NH4 < 200 ppm
As2O3 < 1 ppm
贮 存: 密封保存。
用途 生化研究。
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