DL-蛋氨酸

AJI92

USP26

EP4

FCC V

性状

应为白色结晶或结晶性粉末

应为白色结晶性粉末

应为白色结晶性粉末

应为白色结晶性粉末

鉴别

应符合规定

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符合要求

符合要求

含量

99.0%~100.5%

98.5%～101.5%

99.0%～101.0%

98.5%~101.5%

pH

5.6~6.1

5.6~6.1

5.4～6.1

5.6～6.1

透光率

≥98.0%

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干燥失重

≤0.30%

≤0.4%

≤0.5%

≤0.5%

炽灼残渣

≤0.10%

≤0.5%

≤0.1%

≤0.1%

氯化物

≤0.020%

≤0.02%

≤0.02%

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重金属

≤10ppm

≤0.0015%

≤0.001%

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铁盐

≤10ppm

≤0.003％

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硫酸盐

≤0.020%

≤0.03%

≤0.02%

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铅

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≤5ppm

砷盐

≤1ppm

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≤0.0001%

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铵盐

≤0.02%

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≤0.02%

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其他氨基酸

未测出

应符合规定

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热源

应符合规定

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溶液的澄清度

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清澈 无色

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其它相关物质

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符合要求

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目数

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≥95%--＜50um-  ≥1.0%≥100um

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