Aquivion® D72-25BS is a chemically-stabilized (denoted by the S-suffix) perfluorosulfonic acid (PFSA) ionomer dispersion that exhibits an Equivalent Weight (EW) of 720 g/eq. Polymer concentration is 25%. Solvent system is >99% water and is free of ethers. Aquivion® PFSA dispersions are based on the unique Short Side Chain copolymer of Tetrafluoroethylene (TFE) and Sulfonyl Fluoride Vinyl Ether (SFVE) F2C=CF-O-CF2CF2-SO2F produced by Solvay. The PFSA ionomer dispersions contain its acid form (-SO3H) and are available in various solvent systems, EWs and concentrations. These dispersions can be used to produce PEM fuel cell electrodes and electrochemical cell electrodes, to manufacture or repair ion exchange membranes, to produce super-acid catalysts, and for the surface treatment of PTFE membranes to improve wetting behavior. Please visit for more information.


  • Global Business Unit
    Specialty Polymers
  • Brand
  • Synonyms


Segments Applications
Electrification Battery Systems
Green & Clean Technologies Emission Reductions
Segments Applications
Enhanced Design & Connectivity Display technologies | Home Electronics

Chemical categories

Chemical category Chemical family Chemical product
Specialty Polymers Perfluorosulfonic acid PFSA (Perfluorosulfonic acid)

Region of commercial availability

  • Asia / Pacific
  • Europe / Middle East / Africa
  • North America
Not available in Middle East/Africa

Download documentation for Aquivion® D72-25BS