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564664 Aldrich

Nafion® perfluorinated membrane Green Alternative

Nafion® N551PW, reinforced with poly(tetrafluoroethylene) fiber, thickness 0.005 in.



Related Categories Alternative Energy, Chemical Synthesis, Enabling Products, Greener Alternative Products, Material Sciences,
eq. wt.   1,050
mfr. no.   Nafion® N551PW
greener alternative product characteristics   Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
L × W   12 in. × 12 in.
thickness   0.005 in.
solubility   H2O: insoluble



Nafion® is a perfluorinated ion-exchange membrane which has a wide variety of commercial uses. The acidic (hydrogen ion) form and derivatives are solid, superacid catalysts useful in a wide variety of synthetic applications.

Carbon nanotube reinforced Nafion® composites may be prepared to be used in H2O2 fuel cells.


Darkening/browning is common for pieces stored in a general room environment for an extended period of time (several months), due to organics pick-up. Verify product is kept sealed during storage.
· Keep pieces sealed and protected from general exposure will reduce the effect. Recommend long term storage in air-tight bags.
· Discoloration does not affect performance and can be removed by soaking in dilute nitric acid.

Packaged in heat-sealed foil bag in stay-flat mailers

General description

Nafion® NRE-212 membranes may be used in the investigation of oxygen reduction reaction (ORR) activity of Pt/C catalyst.

Sigma Life Science is committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

Legal Information

Nafion is a registered trademark of The Chemours Company FC, LLC

Nafion is a registered trademark of  THE CHEMOURS COMPANY FC LLC

Price and Availability

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Protocols & Articles


Materials Issues in Polymer Electrolyte Membrane Fuel Cells

Fuel cells have the potential to reduce the nation’s energy use through increased energy conversion efficiency and dependence on imported petroleum by the use of hydrogen from renewable resources. Th...
Nancy L. Garland, Thomas G. Benjamin, John P. Kopasz
Material Matters 2008, 3.4, 85.
Keywords: Applications, Automotive, Catalysis, Combustion, Degradations, Diffusion, Electronics, Help, Ligands, Mass spectrometry, Phase transitions, Reductions, Renewable energy, Separation, Support

Related Content

PEM Fuel Cells

Fuel cells are an alternative energy technology that generate electric energy through the reaction between hydrogen (or a hydrogen-rich fuel source) and oxygen. These devices are particularly interes...
Keywords: Alternative energy, Chemical reactions, Combustion, Electrochemical reactions, Oxidations, Reductions

Peer-Reviewed Papers


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