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分子式：C6H14N4O2
分子量：174.2
CAS号：74-79-3
L-精氨酸 | EP6.0 | AJI92 | USP40 |
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 | 红外光吸收图谱应与对照图谱一致 | 应符合规定 | 应符合规定 |
含量 | 98.5-101.0% | 99.0%～101.0% | 98.5%～101.5% |
PH | --- | 10.5~12.0 | --- |
透光率 | --- | ≥98.0% | --- |
干燥失重 | ≤0.5% | ≤0.5% | ≤0.5% |
炽灼残渣 | ≤0.1% | ≤0.10% | ≤0. 3% |
氯化物 | ≤0.020% | ≤0.020% | ≤0.05% |
重金属 | ≤10ppm | ≤10ppm | ≤15ppm |
铁盐 | ≤10ppm | ≤10ppm | ≤30ppm |
硫酸盐 | ≤0.03% | ≤0.020% | ≤0.03% |
砷盐 | --- | ≤1ppm | --- |
铵盐 | ≤0.02% | ≤0.02% | --- |
其他氨基酸 | 应符合规定 | 应符合规定 | 应符合规定 |
热源 | --- | 应符合规定 | -- |
比旋度 | +25.5°～ +28.5° | +26.9° ～ +27.9° | +26.3°～+27.7° |
溶液澄清度 | 溶液澄清度：5%的水溶液应澄清 | --- | --- |
溶液色级：5%的水溶液不应比BY6的参比溶液的颜色更深 | --- | --- | |
溶解度 | 易溶于水，极微溶于酒精 | --- | --- |
