L-Histidine Monohydrochloride Monohydrate 25grm M
L-Histidine monohydrochloride monohydrate for biochemistry. CAS 5934-29-2, pH 3.5 - 4.5 (100 g/l, H₂O, 20 °C).
Manufacturer: Merck
Catalog ID: 104350.0025
Stock: In Stock
Description
| Catalogue Number | 104350 |
| Synonyms | His |
Product Information
| CAS number | 5934-29-2 |
| EC number | 211-438-9 |
| Hill Formula | C₆H₁₀ClN₃O₂ * H₂O |
| Molar Mass | 209.63 g/mol |
| HS Code | 2933 29 90 |
Applications
| Application | L-Histidine monohydrochloride monohydrate for biochemistry. CAS 5934-29-2, pH 3.5 - 4.5 (100 g/l, H₂O, 20 °C). |
Physicochemical Information
| Density | 1.49 g/cm3 (20 °C) |
| Melting Point | 259 °C (decomposition) |
| pH value | 3.5 - 4.5 (100 g/l, H₂O, 20 °C) |
| Bulk density | 770 kg/m3 |
| Solubility | 169.9 g/l |
Storage and Shipping Information
| Storage | Store below +30°C. |
Specifications
| Assay (alkalimetric, calculated on dried substance) | ≥ 99.0 % |
| Identity (IR-spectrum) | passes test |
| Appearance | white to almost white crystalline powder or colorless crystals |
| Appearance of solution (50 g/l CO₂-free water) | clear and colorless |
| Spec. rotation (α 20/D, 110 g/l, hydrochloric acid 120 g/l, calc. on dried substance) | +9.2 to +10.6 |
| Sulphate (SO₄) | ≤ 0.02 % |
| Heavy metals (as Pb) | ≤ 0.001 % |
| As (Arsenic) | ≤ 0.0005 % |
| Ca (Calcium) | ≤ 0.001 % |
| Co (Cobalt) | ≤ 0.0005 % |
| Fe (Iron) | ≤ 0.0005 % |
| K (Potassium) | ≤ 0.0005 % |
| Mg (Magnesium) | ≤ 0.0005 % |
| Na (Sodium) | ≤ 0.005 % |
| NH₄ (Ammonium) | ≤ 0.01 % |
| Zn (Zinc) | ≤ 0.0005 % |
| Foreign amino acids | ≤ 0.3 % |
| Other ninhydrine positive substances | ≤ 0.1 % |
| Loss on drying (150 °C) | 7.0 - 10.0 % |
