L-異亮氨酸

EP6.0

AJI97

USP26

USP40

性狀

應為白色或類白色結(jié)晶性粉末

應為白色結(jié)晶或結(jié)晶性粉末

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鑒別

應符合規(guī)定

應符合規(guī)定

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應符合規(guī)定

含量

98.5-101.0%

98.5%~101.0%

98.5%~101.5%

98.5%~101.5%

pH

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5.5~6.5

5.5~7.0

5.5~7.0

透光率

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≥98.0%

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干燥失重

≤0.5%

≤0.20%

≤0.2%

≤0.3%

熾灼殘渣

≤0.1%

≤0.10%

≤0.1%

≤0.3%

氯化物

≤0.02%

≤0.020%

≤0.05%

≤0.05%

重金屬

≤10ppm

≤10ppm

≤15ppm

≤15ppm

鐵鹽

≤10ppm

≤10ppm

≤30ppm

≤30ppm

硫酸鹽

≤0.02%

≤0.020%

≤0.03%

≤0.03%

砷鹽

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≤1ppm

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銨鹽

≤0.02%

≤0.02%

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其他氨基酸

應符合規(guī)定

應符合規(guī)定

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熱源

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應符合規(guī)定

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相關化合物

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應符合規(guī)定

比旋度

﹢40.0°~﹢43.0°

﹢39.5°~﹢41.5°

﹢38.9°~﹢41.8°

﹢38.9°~﹢41.8°

溶液澄清度

溶液澄清度：5%的水溶液應澄清

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溶液色級：5%的水溶液不應比BY6的參比溶液的顏色更深

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溶解度

微溶于水，微溶于酒精。它溶于稀的無機酸和稀的氫氧化堿溶液。

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