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Polyethylene glycol monomethyl ether 550
Polyethylene glycol monomethyl ether 550


Applications
Crystallization grade Polyethylene glycol monomethyl ether 550 for formulating screens or for optimization
Description
Polyethylene glycol monomethyl ether 550
Synonyms:
Methoxypolyethylene glycol,
mono-Methyl polyethylene glycol,
Methoxy poly(ethylene glycol),
PEG MME 550, MPEG
CH3O(CH2CH2O)nH
Average Mn ~550
CAS Number [9004-74-4]
EC Number 215-801-2
RTECS PE8271000
MDL Number MFCD00084416
Purity ≥100%
Melting Point(Starting Material) 20.0°C (lit.)

Aldehyde None detected
Peroxide None detected

Measured pH Range: 5.4 - 8.7 at 25°C
Measured Conductivity Range: 0.0 - 1.0 µS/cm at 25°C
Measured Refractive Index Range: 1.46185 - 1.46361 at 20°C

May become highly viscous, develop amorphous, crystalline precipitate, or take on a gel like consistency at temperatures below 20 degrees Celsius. Warm product to 60 degrees Celsius for up to 24 hours, mix well, to dissolve amorphous, crystalline precipitate.
CAT NO NAME DESCRIPTION
HR2-611 Polyethylene glycol monomethyl ether 550 100% solution - 200 ml
Price Quantity
$105.00
References
1.Poly(ethylene) glycol monomethyl ethers - an alternative to poly(ethylene) glycols in protein crystallization. A. M. Brzozowski and S. P. Tolley. Acta Cryst. (1994). D50, 466-468
2.Crystal structure of ethylbenzene dehydrogenase from Aromatoleum aromaticum. Daniel P. Kloer, Corina Hagel, Johann Heider and Gerog E. Schulz. Structure 2006 Volume 14 Number 9, 1377-1388
SUPPORT MATERIALS
SDS for HR2-611
Certificates of Analysis
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