Average Molecular Formula | C36H60-nO30 · (C3H7O)n |
Average Formula Weight | 972.9 + n·(58.1) |
Possible impurities | Propylene glycol, ACD, hydroxypropylated linear dextrins |
Solubility (in 100 cm3 solvent, at 25 °C) |
Water: ~ 50 g Methanol: ~ 5 g (opalescent) Chloroform: < 1 g |
Tests and methods | Requirements |
Appearance# / visual | white or off-white powder |
Clarity of solution | 1 % aqueous solution is clear |
Appearance of aqueous solution # / (EP 2.2.1, EP 2.2.2 Method II) |
1 g dissolved in 2 ml of water with heating is clear and colorless and remains so after cooling |
Conductivity ( EP 2.2.38) | < 200 µS/cm |
Light absorbing impurities UV-VIS | A220-350nm: max. 0.1 A350-600nm: max. 0.01 |
MS (Molar substitution)* / NMR (EP 2.2.33) |
0.5-0.9 |
Propylene glycol / GC (EP 2.2.28) |
max. 0.5% |
Loss on drying# / (EP 2.2.32) | max. 10.0% |
Residual αCD / HPLC (EP 2.2.29) | max. 1.5% |
pH# (EP 2.2.3) | 5.0-8.0 |