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分子式：C5H9NO4S
分子量：147.13
CAS号：56-86-0
L-谷氨酸 | EP6.0 | AJI97 |
性状 | 应为白色或类白色的结晶性粉末 | 应为白色结晶或结晶性粉末 |
鉴别 | 应符合规定 | 应符合规定 |
含量 | 98.5-100.5% | 98.5%~100.5% |
PH | --- | 3.0~3.5 |
透光率 | ≥98.0% | ≥98.0% |
干燥失重 | ≤0.5% | ≤0.10% |
炽灼残渣 | ≤0.1% | ≤0.10% |
氯化物 | ≤0.020% | ≤0.020% |
重金属 | ≤10ppm | ≤10ppm |
铁盐 | ≤10ppm | ≤10ppm |
硫酸盐 | ≤0.030% | ≤0.020% |
砷盐 | ≤1ppm | ≤1ppm |
铵盐 | ≤0.02% | ≤0.02% |
其他氨基酸 | 应符合规定 | 应符合规定 |
比旋度 | +30.5° to +32.5° | +31.5°~ +32.4° |
溶液澄清度 | 溶液澄清度:10%的水溶液应澄清 | ----- |
溶液色级:10%的水溶液为无色 | ----- | |
溶解度 | 易溶于沸水，微溶于冷水，几乎不溶于醋酸、丙酮和酒精 | --- |
