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L-组氨酸
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[产品名称]
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L-组氨酸
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[分子式]
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C6H9N3O2
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[外观]
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白色结晶粉末
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含量
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99.0%~101.0%
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比旋光度
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+12.0°~+12.8°
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透光率
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≥98%
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氯化物
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≤0.020%
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铵含量(NH4)
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≤0.020%
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硫酸盐(SO4)
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≤0.020%
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铁(Fe)
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≤10ppm
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重金属 (Pb)
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≤10ppm
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砷含量 (As2O3)
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≤1ppm
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其它氨基酸
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conforms
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干燥失重
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≤0.20%
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灼烧残渣
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≤0.10%
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PH值
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7.0~8.
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