胱氨酸
| 主要用途 | 营养强化剂 |
|---|---|
| 包装规格 | 25公斤 |
L-半胱氨酸盐无水物
基本信息：
外观 | 白色结晶或白色粉末状 | ||
鉴定 | 用红外线吸收光谱仪器测定 | ||
比旋光度 | +5.5°- +7.0° | +5.7°- +6.8° | +5.5°- +7.0° |
溶解状况 | ≥ 98.0% | --- | ≥ 98.0% |
含氯量 | 19.89 – 20.29% | --- | 19.8 – 20.8% |
铵盐 (NH4) | ≤ 0.02% | --- | --- |
硫酸盐 (SO4) | ≤ 0.020% | ≤ 0.03% | ≤ 0.02% |
铁盐 (Fe) | ≤ 10PPm | ≤ 30PPm | ≤ 10PPm |
重金属 (Pb) | ≤ 10PPm | ≤ 15PPm | ≤ 10PPm |
砷盐 (As2O3) | ≤ 1PPm | --- | ≤ 1PPm |
其它氨基酸 | --- | --- | ≤ 0.5% |
干燥失重 | 8.5 - 12.0% | 8.0 - 12.0% | 8.0 - 12.0% |
灼烧残渣 (sulfated) | ≤ 0.10% | ≤ 0.4% | ≤ 0.1% |
含量 | 99.0-100.5% | 98.5-101.5% | ≥ 98.5% |
酸碱度 | 1.5 - 2.0 | --- | 1.5 - 2.0 |
有机挥发物 | --- | 符合标准 | --- |
