(2-Hydroxypropyl)-gamma-cyclodextrin primary standard

(CODE: -)

Price: € 173.65 / g

Abbreviation: HPGCD PS

CAS Number: 128446-34-4

Product Number: -

Cyclodextrin type: Randomly substituted, non-ionic

Quality: Analytical standard grade

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Volume	Volume Discount	Price
from 1 g	0%	€ 173.65 / g

Chemical and Physical Description

Average Molecular Formula	C₄₈H_80-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, 2 h	max. 10 .0%