L-Histidine:
| General Information |
| Products name:L-Histidine |
| CAS NO :71-00-1 |
| EINECS NO:200-745-3 |
| Molecular formula: C6H9N3O2 |
| Molecular weight: 155.16 |
| Appearance:white Crystalline Powder |
| Solubility:water soluble 41.6 g/L (25 °) |
| USES: used as pharmaceutical raw materials and food additives |
| Standard: USP24 AJ192 |
| BASIC ANALYSIS | ||
| Item of Analysis | Specification | Results |
| Assay (Dry Basis)Note | 98.5 – 101.0 % | 99.8 % |
| Origin | Non-Animal Source | Conforms |
| Appearance (Color) | White | White |
| Appearance (Form) | Crystalline Powder | Crystalline Powder |
| Solubility (Color) | Colorless | Colorless |
| Solubility (Turbidity) | Clear | Clear |
| Identity by IR | Conforms to Structure | Conforms |
| Specific Rotation | 12.0 – 12.8 ° | 12.5 ° |
| Chloride (Cl) | ≤0.020% | ≤ 0.020% |
| Ammonium | ≤ 0.02 % | 0.00 % |
| Sulfate | ≤ 0.020% | ≤ 0.020% |
| Iron (Fe) | ≤10 ppm | ≤10 ppm |
| Arsenic (As) | ≤ 1 ppm | ≤ 1 ppm |
| Loss on Drying | ≤ 0.20 % | 0.02 % |
| Residue on ignition (Ash) | ≤ 0.10 % | 0.00 % |
| Ninhydrin-PositiveSubstances | Conforms | Conforms |
