Description

Nafion™ 350 is a perfluorosulfonic acid (PFSA) ion-exchange membrane, a high-performance material renowned for its exceptional chemical stability and proton conductivity. This product is critical for applications requiring durable, selective transport of cations in highly aggressive chemical environments. It is essential for advanced electrochemical systems in the energy, chemical processing, and analytical instrumentation sectors.

Application

• Chlor-Alkali Electrolysis: As a separator membrane in membrane cell technology for the production of chlorine and caustic soda.
• Fuel Cells & Electrolyzers: Serving as the proton exchange membrane (PEM) in hydrogen fuel cells and water electrolysis systems for energy conversion and storage.
• Electrodialysis & Electrolysis: Used in specialized electrochemical cells for salt splitting, metal recovery, and waste treatment processes.
• Sensors & Analytical Devices: As a selective membrane in electrochemical sensors for gas detection (e.g., humidity, oxygen sensors) and ion-selective electrodes.
• Catalysis & Chemical Synthesis: Employed as a solid acid catalyst or catalyst support in organic synthesis and chemical manufacturing.
• Specialty Separation Processes: For the dehydration of solvents or gases and other membrane-based separation applications requiring acid stability.

Basic Information

Product Name	Nafion™ 350
CAS No.	170006-88-9
Molecular Formula	(C7HF13O5S·C2F4)x
Molecular Weight	Contact for details
Synonyms	Perfluorosulfonic Acid-PTFE Copolymer; Nafion PFSA Membrane; Nafion N350; Ion-Exchange Membrane; Proton Exchange Membrane; PEM; PFSA Membrane; Sulfonated Tetrafluoroethylene Copolymer
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure batch-to-batch consistency and performance for demanding industrial applications. Key parameters such as equivalent weight, thickness, proton conductivity, and mechanical strength are verified. Certificates of Analysis (COA) detailing specific lot characteristics are available upon request.

Storage

Preserve in the original sealed packaging in a cool, dry place. The material is stable but should be protected from prolonged exposure to extreme temperatures and direct sunlight. For long-term storage, maintain conditions at 15-25°C in low humidity.

Specification

Item	Specification
Appearance	Translucent film
Thickness	~350 µm (Contact for exact range)
Equivalent Weight (EW)	1100 g/mol SO3H (typical)
Burst Strength	> 200 kPa
Proton Conductivity	> 0.10 S/cm (under standard conditions)
Chemical Stability	Stable in strong acids and organic solvents

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