Average Molecular Formula | C42H70-nO35 · (CH3)n |
Average Formula Weight | 1135 + n·(14.0) |
Possible impurities | Beta-cyclodextrin |
Solubility (in 100 cm3 solvent, at 25 °C) |
Water: > 50 g Methanol: > 50 g Chloroform: ~ 2 g |
Test | Method | Range |
Appearance | Visual | white or almost white powder |
Clarity of 10% solution | Visual (EP 2.2.1 - 2.2.2) | clear and colorless |
Conductivity (25 °C, 1% solution in water) | Conductometry (EP 2.2.38) | max 400 μS/cm |
Related substances: Betadex | TLC (EP 2.2.27) |
max. 0.25% |
Light absorbing impurities (1%) | UV-Vis (EP 2.2.25) | A230 - A350nm: max. 0.10 A350 - A 720nm: max. 0.05 |
Purity | Calculated | min. 95.0% |
Average Degree of Substitution (n) | NMR (EP 2.2.33) | 10.0 - 14.0 |
Loss on drying | EP 2.2.32 | max. 10.0% |