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5 Kilogram |
Negotiable |
L-Histidine Histidine L-Histidine aji
AJI92 /USP standard
L-Histidine
Appearance |
White crystals or crystalline powder |
Specific rotation[a]D25 |
+12.6°~ +14° |
Chloride(CL) |
≤0.05% |
Sulfate(SO4) |
≤0.03% |
Iron(Fe) |
≤0.003% |
Heavy metals(Pb) |
≤0.0015% |
Loss on drying |
≤0.02% |
Residue on ignition |
≤0.40% |
Chromatographic purity |
Any individual impurity: ≤0.5% Total impurities≤:2.0% |
Organic volatile impurity |
Meets the requirements |
Assay |
98.5%-101.5% |
PH |
7.0-8.5 |
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