860615-75-4

Basic information

• Product Name: 3,3'-bis(4-sulfophenoxy)benzidine
• Synonyms: 3,3'-bis(4-sulfophenoxy)benzidine
• CAS NO: 860615-75-4
• Molecular Weight: 528.563
• Mol File: 860615-75-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3,3'-bis(4-sulfophenoxy)benzidine(CAS DataBase Reference)
• NIST Chemistry Reference: 3,3'-bis(4-sulfophenoxy)benzidine(860615-75-4)
• EPA Substance Registry System: 3,3'-bis(4-sulfophenoxy)benzidine(860615-75-4)

Safety Data

• Hazardous Substances Data: 860615-75-4(Hazardous Substances Data)

Upstream product

• 2373-98-0 3,3'-dihydroxybenzidine 
• 651-07-0 4-fluorobenzenesulfonic acid sodium salt 

Relevant articles and documents

A facile approach for the preparation of cross-linked sulfonated polyimide membranes for fuel cell application

A facile approach has been successfully developed for the preparation of a series of cross-linked sulfonated polyimide (SPI) membranes via the condensation reaction between the sulfonic acid groups and the activated hydrogen atoms of SPIs in the presence of phosphorous pentoxide: methanesulfonic acid in the ratio of 1: 10 by weight (PPMA, method 1) or phosphorous pentoxide only (method 2). The resulting sulfonyl linkages are very stable and the cross-linked SPI membranes showed greatly improved water stability in comparison with the uncross-linked ones while high proton conductivity was maintained. The Royal Society of Chemistry.