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分子式：C5H11NO2S
分子量：149.21
CAS号：59-51-8
DL-蛋氨酸 | EP4 | AJI92 | USP26 |
性状 | 应为白色结晶性粉末 | 应为白色结晶或结晶性粉末 | 应为白色结晶性粉末 |
鉴别 | 符合要求 | 应符合规定 | --- |
含量 | 99.0%～101.0% | 99.0%~100.5% | 98.5%～101.5% |
pH | 5.4～6.1 | 5.6~6.1 | 5.6~6.1 |
透光率 | --- | ≥98.0% | --- |
干燥失重 | ≤0.5% | ≤0.30% | ≤0.4% |
炽灼残渣 | ≤0.1% | ≤0.10% | ≤0.5% |
氯化物 | ≤0.02% | ≤0.020% | ≤0.02% |
重金属 | ≤10ppm | ≤10ppm | ≤15ppm |
铁盐 | --- | ≤10ppm | ≤30ppm |
硫酸盐 | ≤0.02% | ≤0.020% | ≤0.03% |
铅 | --- | --- | --- |
砷盐 | ≤1ppm | ≤1ppm | --- |
铵盐 | ≤0.02% | ≤0.02% | --- |
其他氨基酸 | --- | 未测出 | 应符合规定 |
热源 | --- | 应符合规定 | --- |
溶液的澄清度 | 清澈 无色 | --- | --- |
其它相关物质 | 符合要求 | --- | --- |
