L-丝氨酸

CP2015

AJI92

USP32

USP40

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

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鉴别

应符合规定

应符合规定

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应符合规定

含量

≥98.5%

99.0%~101.0%

98.5%~101.5%

98.5%~101.5%

pH

5.5～6.5

5.2～6.2

5.5～6.5

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透光率

≥98.0%

≥98.0%

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干燥失重

≤0.2%

≤0.20%

≤0.2%

≤0.2%

炽灼残渣

≤0.1%

≤0.10%

≤0.1%

≤0.1%

氯化物

≤0.02%

≤0.020%

≤0.05%

≤0.05%

重金属

≤0.001%

≤10ppm

≤15ppm

≤15ppm

铁盐

≤0.001%

≤10ppm

≤30ppm

≤30ppm

硫酸盐

≤0.02%

≤0.020%

≤0.03%

≤0.03%

细菌内毒素

＜12EU/g

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砷盐

≤0.0001%

≤1ppm

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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

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应符合规定

热源

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应符合规定

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比旋度

﹢14.0°～﹢15.6°

﹢14.4°～﹢15.5°

﹢14.0°～﹢15.6°

﹢14.0°～﹢15.6°