L-苯丙氨酸

CP2015

AJI92

USP40

FCCVI

性状

应为白色结晶或结晶性粉末

应为白色结晶或结晶性粉末

应为白色结晶或结晶性粉末

应为白色结晶或结晶性粉末

鉴别

应符合规定

应符合规定

应符合规定

红外图谱

含量

≥98.5%

99.0%～100.5%

98.5%~101.5%

98.5%~101.5%

pH

5.4~6.0

5.4~6.0

5.5~7.0

5.4~6.0

透光率

≥98.0%

≥98.0%

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干燥失重

≤0.2%

≤0.20%

≤0.3%

≤0.2%

炽灼残渣

≤0.1%

≤0.10%

≤0.4%

≤0.1%

氯化物

≤0.02%

≤0.020%

≤0.05%

≤0.02%

重金属

≤0.001%

≤10ppm

≤15ppm

≤15mg/kg

铅

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≤5 mg/kg

铁盐

≤0.001%

≤10ppm

≤30ppm

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硫酸盐

≤0.02%

≤0.020%

≤0.03%

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细菌内毒素

＜25EU/g

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砷盐

≤0.0001%

≤1ppm

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≤2mg/kg

铵盐

≤0.02%

≤0.02%

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其他氨基酸

应符合规定

应符合规定

应符合规定

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热源

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应符合规定

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比旋度

-33.5°~ -35.0°

-33.5°~ -35.0°

-32.7°~-34.7°

-33.2°~ -35.2°