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CAS号：616-91-1
标准：AJI, USP
产品指标：
N-乙酰-L-半胱氨酸 | AJI92 | USP36 |
外观 | 应为白色结晶性粉末 | 白色结晶或结晶性粉末 |
含量 | 98.5%~101.0% | 98.0%~102.0% |
pH | 2.0~2.8 | 2.0~2.8 |
比旋度 | +21.3º~+27.0º | +21°~ +27° |
透光率 | ≥98.0% | --- |
干燥失重 | ≤0.5% | ≤1.0% |
炽灼残渣 | ≤0.20% | ≤0.5% |
氯化物 | ≤0.04% | --- |
重金属 | ≤10ppm | ≤0.001% |
铁盐 | ≤20ppm | --- |
硫酸盐 | ≤0.030% | --- |
砷盐 | ≤1ppm | --- |
铵盐 | ≤0.02% | --- |
其他氨基酸 | 应符合规定 | --- |
熔点 | 106ºC~110ºC | --- |
