Description

Nafion(R) Dispersion Solution De1021 Cs Type is a specialized perfluorosulfonic acid (PFSA) ionomer dispersion in a counterion form. This advanced material is engineered to form highly conductive, chemically resistant, and durable thin films, which are critical for high-performance electrochemical applications. It is essential for researchers and manufacturers in the energy, chemical processing, and advanced sensor sectors who require reliable proton-exchange membranes and catalyst layers.

Application

• Fabrication of proton exchange membranes (PEM) for fuel cells and electrolyzers.
• Preparation of catalyst inks and binder for membrane electrode assemblies (MEAs).
• Coating and impregnation agent for improving the ionic conductivity and chemical stability of electrodes.
• Key component in the manufacturing of sensors and analytical devices requiring selective ion transport.
• Use as a modifying agent for surfaces in specialized electrochemical research and development.
• Potential applications in chlor-alkali membrane processes and other advanced electrochemical separations.

Basic Information

Product Name	Nafion(R) Dispersion Solution De1021 Cs Type
CAS No.	31175-20-9
Molecular Formula	(C7HF13O5S·C2F4)x
Molecular Weight	Variable (Polymer)
Synonyms	Nafion DE1021; Nafion Cs+ form; Perfluorosulfonic acid–PTFE copolymer; PFSA ionomer dispersion; Ion-exchange resin, perfluorinated; 2-[1-[difluoro-[(trifluoroethenyl)oxy]methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2-tetrafluoro-ethanesulfonic acid; Tetrafluoroethylene-perfluoro-3,6-dioxa-4-methyl-7-octenesulfonic acid copolymer
EINECS	Contact for details

Quality Control

Our Nafion(R) Dispersion Solution is produced and tested under stringent quality management protocols. Each batch is characterized for critical parameters including solid content, equivalent weight, viscosity, and counterion concentration to ensure batch-to-batch consistency and performance reliability. Certificates of Analysis (COA) detailing these specifications are available upon request to support your quality assurance and R&D processes.

Storage

Preserve in a tightly closed container, protected from light. Store at room temperature (15-25°C). Avoid freezing and prolonged exposure to elevated temperatures. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear to translucent dispersion
Solid Content	Contact for details
Equivalent Weight	Contact for details
Counterion Form	Cs+ (Cesium)
Dispersion Medium	Water/Alcohol mixture
Viscosity	Contact for details
pH	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.