(2-Hydroxypropyl)-gamma-cyclodextrin primary standard

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Price: € 150.00 / g

Abbreviation: HPGCD PS
CAS Number: 128446-34-4
Product Number:
Cyclodextrin type: Randomly substituted cyclodextrins, neutral
Quality: analytical standard
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for 150.00  EUR
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Chemical and Physical Description
Average Molecular Formula C48H80-nO40· (C3H7O)n
Average Formula Weight 1297.2 + n·(58.1)
Possible impurities Propylene glycol, gamma-cyclodextrin, hydroxypropylated linear dextrins
Solubility
(in 100 cm3 solvent, at 25 °C)
Water: > 33 g
Methanol: > 33 g
DMF: > 33 g
Specification
Test Method Range
Appearance Visual white or almost white powde
Identification A IR (USP <197>, EP 2.2.24) conform with theoretical structure
Identification B NMR (EP 2.2.33) conform with theoretical structure
Heavy metals USP <231> Cadmium  NMT 0.5 µg/g
Lead  NMT 0.5 µg/g
Arsenic  NMT 1.5 µg/g
Mercury  NMT 3.0 µg/
Related substances
residual GCD
Propylene glycol

HPLC (EP 2.2.29)
GC (EP 2.2.28)

max. 1.5%
max. 2.5%
Volatile organics GC (EP 2.2.28) max 50 ppm
Clarity of solution (50%, w/v) Visual the solution is clear, and essentially free from particles of foreign matter
Conductivity (25 °C, 1% solution in water) EP 2.2.38 max. 200 µS/cm
Residue on ignition USP <281> max. 0.1%
Average Degree of Substitution (n) NMR (EP 2.2.33) Molar substitution: 0.4 - 1.5
Loss on drying 120°C, 2h max. 10 .0%
Storage: at room temperature, in tightly closed container.

MSDS Downloads

  • 38-HPGCD

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