L-Histidine,white crystalline or crystalline powder,odorless,slightly bitter taste. Melting and decomposition at about 277~288 ℃. The imidazole and metal ions are easy to form complex salt. Dissolve in water (4.3g/100ml, 25 ℃), very difficult to dissolve in ethanol, insoluble in ether.
Less well known is that L-histidine is required by the body to regulate and utilize essential trace minerals such as copper, zinc, iron, manganese and molybdenum.L-Histidine is an essential amino acid that cannot be formed by other nutrients, and must be in the diet to be available to the body.
| Product Name | L-Histidine |
| Specification | 99% |
| Appearance | White Powder |
| Grade | Food Grade |
| CAS | 71-00-1 |
| MF | C6H9N3O2 |
| EINECS No | 200-745-3 |
| Storage conditions | Store in cool & dry place, Keep away from strong light and heat. |
| ANALYSIS | SPECIFICATION | RESULTS |
| Appearance | White Powder | Complies |
| Odor | Characteristic | Complies |
| Tasted | Characteristic | Complies |
| Assay | 99% | Complies |
| Sieve Analysis | 100% pass 80 mesh | Complies |
| Loss on Drying | 5% Max | 1.02% |
| Sulphated Ash | 5% Max | 1.30% |
| Extract Solvent | Ethanol & Water | Complies |
| Heavy Metal | 5ppm Max | Complies |
| As | 2ppm Max | Complies |
| Residual Solvents | 0.05% Max | Negative |
| Microbiology | ||
| Total Plate Count | 1000/g Max | Complies |
| Yeast & Mold | 100/g Max | Complies |
| E.Coli | Negative | Complies |
| Salmonella | Negative | Complies |