4,4′-Sulfonyldibenzoic acid

CAS 2449-35-6O2S(C6H4CO2H)2Polymer Science

4,4′-Sulfonyldibenzoic acid (CAS 2449-35-6) is a dicarboxylic acid with the linear formula O2S(C6H4CO2H)2 and a molecular weight of 306.29 g/mol. This compound serves as a valuable monomer in polymer science and materials science. Its structure, featuring a central sulfonyl group linking two benzoic acid moieties, makes it suitable for the synthesis of high-performance polymers with enhanced thermal and mechanical properties.

IUPAC: Diphenyl sulfone 4,4′-dicarboxylic acid
Synonyms: O2S(C6H4CO2H)2Diphenyl sulfone 4,4′-dicarboxylic acid

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4,4′-Sulfonyldibenzoic acid (O2S(C6H4CO2H)2) — chemical structure, CAS 2449-35-6; Materials Science, fine chemical supplied by Tech Serve Solutions

Carboxylic Acid MonomersMaterials ScienceMonomersPolymer Science

01 /Applications

Monomer for Polymer Synthesis

4,4′-Sulfonyldibenzoic acid is used as a difunctional monomer in polycondensation reactions. It can be polymerised with diamines or diols to create polyamides or polyesters, respectively, leading to materials with improved thermal stability and chemical resistance.

Building Block in Materials Science

The rigid structure imparted by the sulfonyl group and aromatic rings makes this compound an excellent building block for advanced materials. It can be incorporated into polymers designed for demanding applications requiring high strength and durability.

Precursor for Specialty Chemicals

As a dicarboxylic acid derivative of diphenyl sulfone, it can be a precursor for synthesising various specialty chemicals. Its functional groups allow for further chemical modifications to tailor properties for specific uses.

02 /Properties

Molecular weight	306.29
Linear formula	O2S(C6H4CO2H)2
Assay	97%
Melting point	>350 °C(lit.)

03 /Safety & handling

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P305IF IN EYES

Protective equipment	dust mask type N95 (US), Eyeshields, Gloves
Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xi
Risk statements (R)	36/37
Safety statements (S)	26-36

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

2449-35-6

MDL number

MFCD00020375

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is 4,4′-Sulfonyldibenzoic acid used for?

4,4′-Sulfonyldibenzoic acid is primarily used as a monomer in polymer synthesis and as a building block in materials science for creating polymers with enhanced thermal and mechanical properties.

What is the CAS number and formula for 4,4′-Sulfonyldibenzoic acid?

The CAS number is 2449-35-6, and its linear formula is O2S(C6H4CO2H)2.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies 4,4′-Sulfonyldibenzoic acid with an assay of 97%. This is a technical or research grade material and is not represented as USP, BP, or EP grade.

How should 4,4′-Sulfonyldibenzoic acid be handled?

Handle 4,4′-Sulfonyldibenzoic acid with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Avoid breathing dust and ensure adequate ventilation, as it may cause eye irritation and respiratory tract irritation (H319, H335).