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China Amino Acid L-Histidine L Histidine Histidine USP CAS No 71-00-1

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Local Area:	Jinan, Shandong, China
R&D Capacity:	OEM, ODM, Other
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Customized:	Non-Customized
Certification:	ISO 9001

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Product Description

PRODUCT NAME:L-HISTIDINE PRODUCTION DATE:STANDARD:USP41 SHELF LIFE: 2YEARS

Tests
Limits
Test results
DescriptionWhite crystals or crystalline powder
conforms
Identification(IR)concordant with the reference spectrum
conforms
SolubilitySoluble in water; very slightly
soluble in alcohol; insoluble in ether
conforms
Assay(on dried basis)
98.5~101.5%
99.7%
pH
7.0~8.5
7.9
Specific rotation
D
+12.6°~+14.0°
+12.8°
Chloride(Cl)
≤0.05%
<0.05%
Sulfate(SO4)
≤0.03%
<0.03%
Iron(Fe)
≤30ppm
<30ppm
Loss on drying
≤0.20%
0.11%
Residue on ignition
≤0.40%
0.06%
Chromatographic purityindividual impurity ≤0.5% total impurities≤ 2.0%
conforms
Conclusion: Passed Standard of USP41.