802573

Aquivion^® D79-25BS-Li

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
• Linear Formula: (C₄F₇SO₄Li)_x . (C₂F₄)_y
• CAS Number: 1687740-67-5
• UNSPSC Code: 26111700
• NACRES: NA.23

Properties

• 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: Greener Alternative Product
• concentration: 25 wt. % in water
• greener alternative category: Enabling

Description

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

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable