武汉万荣科技发展有限公司
L-半胱氨酸盐酸盐无水物
分子式:C3H8NO2SCl 分子量:157.6191
Cas No:52-89-1
质量标准:
外观 |
白色结晶或白色粉末状 |
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鉴定 |
用红外线吸收光谱仪器测定 |
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比旋光度 |
+5.5°- +7.0° |
+5.7°- +6.8° |
+5.5°- +7.0° |
溶解状况 |
≥ 98.0% |
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≥ 98.0% |
含氯量 |
19.89 – 20.29% |
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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 |
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≤ 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 |
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1.5 - 2.0 |
有机挥发物 |
--- |
符合标准 |
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L-半胱氨酸盐酸盐无水物用途:
L-半胱氨酸盐酸盐无水物用作面包改良剂;营养增补剂、抗氧化剂、护色剂。