L(+)-Histidine monochlorhydrate monohydraté 98%
Marques : Thermo Fisher ScientificTotal Evaluation: 0
Moyenne des Notes : 0.0 sur 5
Synonyme(s):
His HCl monohydraté, (S)-(+)-Histidine monochlorhydrate monohydraté, (S)-(+)-Histidine HCl monohydraté, H-His-OH.HCl.H2O
Formule:
C₆H₉N₃O₂·HCl·H₂O Poids moléculaire: 209.63 g/mol Point de fusion: 259 Température de stockage: Température ambiante |
Numéro MDL:
MFCD00151027 Numéro CAS: 5934-29-2 EINECS: 211-438-9 Indice Merck: 13,04741 |
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Résultats des tests de spécification
Appearance | White Crystalline powder or crystals |
Infrared spectrum | Conforms |
Loss on drying | 7 % to 10 % (3 h) (145 to 150°C) |
Sulfated ash | ≤0.1 % |
pH | 3 to 5 (2.5 % at 25°C) |
Specific optical rotation | +9.2° to +10.6° (20°C, 589 nm) (c=11, 6 N HCl) (On anhydrous substance) |
Titration with NaOH | ≥97.5 % (On anhydrous substance) |
Sulfate (SO4) | ≤300 ppm |
Ammonium (NH4) | ≤200 ppm |
Iron (Fe) | ≤10 ppm |
Heavy metals (as Pb) | ≤10 ppm |
Other amino acids | ≤0.5 % (TLC) |
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