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L-Histidine
An essential amino acid in human. It is widely used as an ingredient in infusion drug and infant formula.
| Cas.No | 71-00-1 |
| Assay | 99.0-101.0% |
| Specification | White crystals or crystalline powder, odorless, slightly bitter acid taste |
| Applications | Infusion, Cell culture media, Biotech, Dietary Supplement |
| Packaging | 25kg&50kg |
| Pharmacopeia | USP,EP,FCC |
| STORAGE | Controlled room temperature in tight container |
SPECIFICATION AND PROCEDURE
| State of solution (Transmittance) |
Not Less Than 98.0% |
| pH | 7.0～8.5 |
| Specific rotation[α]20D | +12.0～+12.8° |
| Specific rotation[α]25D | +12.6～+14.0° |
| Ammonium (NH4) | Not More Than 0.020% |
| Chloride (Cl) | Not More Than 0.020% |
| Sulfate (SO4) | Not More Than 0.020% |
| Iron (Fe) | Not More Than 10 ppm |
| Heavy metals (Pb)** | Not More Than 10 ppm |
| Arsenic (As2O3) | Not More Than 1 ppm |
| Loss on drying | Not More Than 0.20% |
| Residue on ignition | Not More Than 0.10% |
| Related substances | Not More Than 0.5% |
| Endotoxin* | Less Than 6.0 EU/g |
| Assay (dry basis) | 99.0～101.0% |
· * The endotoxin-certified grade will be supplied on request.
· ** FCC grade (Lead : Not More Than 5 mg/kg) will be supplied on request.
· This product meets requirements of residual solvents listed in the current JP, USP and EP.
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