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Merck
CN

802573

Sigma-Aldrich

Aquivion® D79-25BS-Li

greener alternative

liquid dispersion, 25% in water, PFSLi eq. wt. 790 g/mole SO3Li, stabilized CF3 polymer chain ends

Synonym(s):

Aquivion® SO3Li, Tetrafluoroethylene-perfluoro(3-oxa-4-pentenesulfonic acid) copolymer, Ethanesulfonic acid

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About This Item

Linear Formula:
(C4F7SO4Li)x . (C2F4)y
CAS Number:
1687740-67-5
MDL number:
MFCD25977342
UNSPSC Code:
26111700
NACRES:
NA.23

Key Documents

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Quality Level

100

form

dispersion

eq. wt.

790 g/eq±20 g/eq SO3Li

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

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concentration

25 wt. % in water

greener alternative category

Enabling

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General description

Aquivion® D79-25BS-Li is a dispersion 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 lithium sulfonate form, SO3Li. Aquivion® D79-25BS-Li is delivered as a colloidal dispersion in highly pure deionized water. It contains the perfluoropolymer′s neutral lithium salt form (R-SO3Li) of low equivalent weight (EW) 790 g/mole SO3H at very high solid content of 25 % by weight which allows a large variety of subsequent formulations without additional pre-concentration steps. D79-25BS-Li contains "chemically stabilized" perfluoropolymer in which a large amount of polymer end groups are converted to their inert "CF3" configuration.
We are 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 and is intended for use as Proton Exchange Membrane (PEM) Fuel Cells. Click here for more information.

Application

Once formulated with solvents Aquivion® D79-25BS-Li can be used for the preparation of cast films or membranes, of coatings on various substrates. Formulations with volatile and non-volatile additives to make components for electrochemical devices are another possible way of using D79-25BS-Li.

Preparation Note

Store product near room temperature and keep away from sources of radiation (UV, IR) or ignition. Do not freeze. Agitate and eventually sonicate prior to use.

Legal Information

Aquivion is a registered trademark of Syensqo Group

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCP5931
MKBW9111V

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Articles

Perfluorosulfonic Acid Membranes for Fuel Cells

Advances in electrochemical water conversion and understanding PEMFC degradation drive progress in hydrogen technologies.

用于燃料电池和电解槽等应用的全氟磺酸膜

将水通过电化学的方法转化为氢和氧的发展，主要是通过开发新材料并了解质子交换膜燃料电池（PEMFC）在运行过程中的降解机理实现的。

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