L-丙氨酸

AJI92

USP40

USP32

GB25543-2010

性状

应为白色结晶或结晶性粉末

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应为白色结晶或结晶性粉末

鉴别

应符合规定

应符合规定

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含量

99.0%～101.0%

98.5%～101.5%

98.5%～101.5%

98.5%～101.5%

pH

5.7~6.7

5.5～7.0

5.5～7.0

5.7~6.7

透光率

≥98.0%

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干燥失重

≤0.20%

≤0.2%

≤0.2%

≤0.20%

炽灼残渣

≤0.10%

≤0. 15%

≤0.1%

≤0.20%

氯化物

≤0.020%

≤0.05%

≤0.05%

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重金属

≤10ppm

≤15ppm

≤15ppm

≤10ppm

铁盐

≤10ppm

≤30ppm

≤30ppm

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硫酸盐

≤0.020%

≤0.03%

≤0.03%

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细菌内毒素

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砷盐

≤1ppm

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≤1ppm

铵盐

≤0.02%

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其他氨基酸

应符合规定

应符合规定

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热源

应符合规定

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比旋度

+14.3°~+15.2°

﹢13.7°～﹢15.1°

﹢13.7°～﹢15.1°

+13.5~+15.5