3232-24-4

Basic information

• Product Name: 4,4'-bis(sulfonic acid)diphenyl ether
• Synonyms: 4,4'-bis(sulfonic acid)diphenyl ether
• CAS NO: 3232-24-4
• Molecular Weight: 330.339
• Mol File: 3232-24-4.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 4,4'-bis(sulfonic acid)diphenyl ether(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-bis(sulfonic acid)diphenyl ether(3232-24-4)
• EPA Substance Registry System: 4,4'-bis(sulfonic acid)diphenyl ether(3232-24-4)

Safety Data

• Hazardous Substances Data: 3232-24-4(Hazardous Substances Data)

Upstream product

• 101-84-8 diphenylether 
• 7664-93-9 sulfuric acid 
• 108-95-2 phenol 
• 6415-38-9 benzenediazonium sulphate 

Downstream Products

• 80-51-3 diphenylether-4,4'-disulfonyl hydrazide 

Relevant articles and documents

Method for preparing high-purity 4,4'-oxybisbenzensulfonyl chloride

The invention discloses a method for preparing high-purity 4,4'-oxybisbenzensulfonyl chloride. The method includes the following steps that (1) concentrated sulfuric acid is dropwise added into diphenyl ether at the temperature of 60 DEG C and the negative pressure, the mixture is fully reacted at the temperature of 130 DEG C to 140 DEG C after the concentrated sulfuric acid is dropwise added, the reaction is completed, and a sulfonic acid mixture is prepared; (2) an organic solvent is added into the sulfonic acid mixture at the temperature of 0 DEG C to 30 DEG C, the pH value of a system is adjusted to be 7 to 9 with alkali, solid-liquid separation is carried out, and diphenyl ether disulfonate is obtained; (3) the diphenyl ether disulfonate is added into acid, the mixture is fully reacted, water is removed after reacting, and a mixed product is obtained; (4) phosphorus oxychloride is dropwise added into the mixed product at the temperature of 80 DEG C or above, the mixture is fully reacted after the temperature of 100 DEG C to 105 DEG C after the phosphorus oxychloride is dropwise added, a reaction product is obtained after reacting, the reaction product is washed, and the 4,4'-oxybisbenzensulfonyl chloride is obtained. OBSC prepared with the method is narrow in melting range, high in purity and whiteness degree and capable of allowing a downstream product foaming agent OBSH to have the advantages of being high in gas-forming amount, narrow in gas-forming temperature range and high in purity and whiteness degree.

SULFUR TRIOXIDE SULFONATION OF DIPHENYL ETHER, DIPHENYL SULFIDE, DIBENZODIOXIN, AND XANTHENE

The sulfur trioxide sulfonation of diphenyl ether (1), diphenyl sulfide (2), and the related tricyclic dibenzodioxin (3) and xanthene (4) has been studied.The substrates 1 and 2 both yield initially the 4-sulfonic acid derivative (4-S) and subse