L-Alanine 99%
Marques : Thermo Fisher ScientificTotal Evaluation: 0
Moyenne des Notes : 0.0 sur 5
Synonyme(s):
H-L-Ala-OH, (S)-(+)-Alanine, L(+)-Alanine, A, L-α-Alanine, H-Ala-OH, α-Alanine
Formule:
C₃H₇NO₂ Poids moléculaire: 89.09 g/mol Point d'ébullition: 189 Point de fusion: 314…316 °C (déc.) Température de stockage: Température ambiante |
Numéro MDL:
MFCD00064410 Numéro CAS: 56-41-7 EINECS: 200-273-8 Indice Merck: 13,00203 |
Résultats des tests de spécification
Appearance | White to off-white Crystalline powder or crystals |
Infrared spectrum | Conforms |
Loss on drying | ≤0.2 % (105°C, 3 h) |
Sulfated ash | ≤0.1 % |
UV transmittance | ≥95 % (c=10, H2O, 430 nm) 1 cm cell |
pH | 5.5 to 7 (2.5 % at 25°C) |
Specific optical rotation | +13.5° to +15.5° (20°C, 589 nm) (c=10, 6 N HCl) (on dry substance) |
Titration with HClO4 | 98.5 to 101.5 % (on dry substance) |
Chloride (Cl) | ≤200 ppm |
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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