Customization: | Available |
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Grade: | Food Grade |
Application: | Nutrient Additives |
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ERTIFICATE OF ANALYSIS
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Product Name
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L-Histidine
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CAS No.
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71-00-1
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Items
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Specification
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Result
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Appearance
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White crystals or crystalline powder
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Conforms
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Identification
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Concordant with the reference spectrum
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Conforms
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Assay
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98.5% ~ 101.5%
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99.5%
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pH
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7.0 ~ 8.5
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7.9
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Specific rotation
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+12.6° ~ +14.0°
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13.3°
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Chloride(Cl)
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≤0.05%
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0.04%
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Sulphate(SO4)
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≤0.03%
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0.02%
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Iron(Fe)
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≤30ppm
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28ppm
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Heavy metals(Pb)
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≤15ppm
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13ppm
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Loss on drying
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≤0.20%
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0.20%
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Residue on ignition
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≤0.40%
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0.35%
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Chromatographic purity
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Conforms
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Conforms
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