L-色氨酸
分子量:204.23
CAS号:73-22-3
L-色氨酸 |
AJI92 |
USP32 |
USP40 |
性状 |
应为白色至淡黄色白色结晶或结晶性末 |
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鉴别 |
应符合规定 |
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应符合规定 |
含量 |
98.5%~100.5% |
98.5%~101.5% |
98.5%~101.5% |
pH |
5.4~6.4 |
5.5~7.0 |
5.5~7.0 |
透光率 |
≥95.0% |
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干燥失重 |
≤0.20% |
≤0.3% |
≤0.3% |
炽灼残渣 |
≤0.10% |
≤0.1% |
≤0.1% |
氯化物 |
≤0.020% |
≤0.05% |
≤0.05% |
重金属 |
≤10ppm |
≤15ppm |
≤15ppm |
铁盐 |
≤20ppm |
≤30ppm |
≤30ppm |
硫酸盐 |
≤0.020% |
≤0.03% |
≤0.03% |
细菌内毒素 |
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砷盐 |
≤1ppm |
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铵盐 |
≤0.02% |
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其他氨基酸 |
应符合规定 |
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热源 |
应符合规定 |
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比旋度 |
-30.0° ~ -32.5° |
-29.4°~-32.8° |
-29.4°~ -32.8° |
有机杂质 |
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应符合规定 |
联系我们
石家庄海天氨基酸有限公司
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