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202487 Sigma-Aldrich

Poly(ethylene glycol) methyl ether

average Mn 550

Synonym: Methoxy poly(ethylene glycol), Polyethylene glycol monomethyl ether, mPEG



Related Categories Hydroxy, Materials Science, Monofunctional PEGs, Poly(ethylene glycol) and Poly(ethylene oxide), Polymer Science,
Quality Level   200
vapor density   >1 (vs air)
vapor pressure   0.05 mmHg ( 20 °C)
form   semisolid
mol wt   average Mn 550
refractive index   n20/D 1.455
viscosity   7.5 cSt(210 °F)(lit.)
transition temp   Tm 20 °C
density   1.089 g/mL at 25 °C
Ω-end   hydroxyl
α-end   methoxy



250, 500 g in poly bottle

5 g in glass bottle

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
359.6 °F
Flash Point(C) 
182 °C


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles


Cell Culture Scaffolds via Bio-orthogonal Click Reactions

1,2Malar A. Azagarsamy, 1Navakanth R. Gandavarapu, 1,2Kristi S. Anseth* 1Department of Chemical and Biological Engineering and 2the Howard Hughes Medical Institute, University of Colorado at Boulder,...
Keywords: Addition reactions, Adhesion, Biomaterials, Catalysis, Cell culture, Cell signaling, Chemical reactions, Click chemistry, Cycloadditions, Degradations, Growth factors, Huisgen Cycloaddition, Ligands, Michael Addition, Peptide synthesis, Polymerization reactions, Step-growth polymerization

Degradable Poly(ethylene glycol) Hydrogels for 2D and 3D Cell Culture

Progress in biotechnology fields such as tissue engineering and drug delivery is accompanied by an increasing demand for diverse functional biomaterials. For decades, research in polymeric biomateria...
Keywords: Absorption, Angiogenesis, Biomaterials, Catalysis, Cell culture, Degradations, Eliminations, Growth factors, Infrared spectroscopy, Ligands, Michael Addition, Polymerization reactions, Ring-opening polymerization

Fouling Resistant Biomimetic Poly(Ethylene Glycol) Based Grafted Polymer Coatings

Accumulation of biological matter at surfaces is an inevitable event in virtually any environment in which natural and man-made materials are used. Although sometimes fouling of surfaces with biomole...
Lesley M. Hamming and Prof. Phillip B. Messersmith
Material Matters 2008, 3.3, 52.
Keywords: Adhesion, Adsorption, Biomaterials, Cell attachment, Derivatizations, Electrophoresis, Immobilization, Methods, Polymerization reactions, Radical polymerization, Spectroscopy, Surface Science, Tools, Type

Polyethylene Glycol (PEG) Selection Guide

Poly(ethylene glycol) (PEG) is a synthetic, hydrophilic, biocompatible polymer with widespread use in biomedical and other applications. PEGs are synthesized using a ring-opening polymerization of et...
Keywords: Adhesion, Bacterial conjugations, Click chemistry, Molecular biology, PEGylations, Polymerization reactions, Ring-opening polymerization

Peer-Reviewed Papers


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