802549
Aquivion® D72-25BS
PFSA eq. wt. 720 g/mole SO3H, liquid, dispersion, 25% in water, stabilized CF3 polymer chain ends
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Synonym(s):
Aquivion® SO3H-form, Tetrafluoroethylene-perfluoro(3-oxa-4-pentenesulfonic acid) copolymer, Ethanesulfonic acid
Linear Formula:
(C4HF7O4S .C2F4)x
UNSPSC Code:
26111700
NACRES:
NA.23
Recommended Products
Quality Level
form
dispersion
liquid
eq. wt.
720±20g/mol (SO3H)
concentration
25±1 % (w/w)
density
1.14 g/mL
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General description
Aquivion® PFSA dispersions are based on the short-side-chain (SSC) copolymer of Tetrafluoroethylene and the Sulfonyl Fluoride Vinyl Ether (SFVE) CF2=CF2-O-(CF2)2-SO2F industrially produced by Solvay Specialty Polymers. The resulting perfluoropolymer′s functional groups are in their sulfonic acid form, SO3H.
Application
Aquivion® D72-25BS can be used as a formulation additive for the production of polymer electrolyte fuel cell electrodes, manufacturing or repairing of cation-exchange membranes, surface coatings of PTFE membranes to improve their wetting behavior or for the development of superacid catalysts. The addition of further film-forming and/or other volatile or non-volatile chemicals is necessary to impart the desired processing and end-product characteristics.
Other Notes
Features & Benefits:
Aquivion® D72-25BS is delivered as a colloidal dispersion in highly pure deionized water. It contains the perfluoropolymer′s sulfonic acid form (R-SO3H) of equivalent weight (EW) 720g/mole SO3H at very high solid content of 25% by weight which allows a large variety of subsequent formulations without additional pre-concentration steps.
D72-25BS contains "chemically stabilized" perfluoropolymer in which a large amount of polymer end groups are converted to their inert "CF3" configuration.
Hydrophilicity, swelling and water retention at dry state are more pronounced than for D79-25BS, D83-24B or D98-25BS.
Aquivion® D72-25BS is delivered as a colloidal dispersion in highly pure deionized water. It contains the perfluoropolymer′s sulfonic acid form (R-SO3H) of equivalent weight (EW) 720g/mole SO3H at very high solid content of 25% by weight which allows a large variety of subsequent formulations without additional pre-concentration steps.
D72-25BS contains "chemically stabilized" perfluoropolymer in which a large amount of polymer end groups are converted to their inert "CF3" configuration.
Hydrophilicity, swelling and water retention at dry state are more pronounced than for D79-25BS, D83-24B or D98-25BS.
Legal Information
Aquivion is a registered trademark of Syensqo Group
WGK
WGK 2
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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