3,3,4,4-diphenylsulfonetetracarboxylicdianhydride DSDA CAS 2540-99-0

Name: 3,3,4,4-diphenylsulfonetetracarboxylicdianhydride DSDA CAS 2540-99-0
Brand: Aure Chemical
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Synonyms: 4,4'-Sulfonyldiphthalic dianhydride; 5,5'-Sulfonylbis(isobenzofuran-1,3-dione); 4,4'-Sulfonyldiphthalic anhydride; Bis-(3-phthalyl anhydride) sulfone; 1,3-Isobenzofurandione, 5,5'-sulfonylbis-; 3,3',4,4'-Diphenyl sulfone tetracarboxylic anhydride

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Product Details

DSDA CAS 2540-99-0 for Sulfone-Containing Polyimide Synthesis

3,3',4,4'-Diphenylsulfonetetracarboxylic dianhydride, commonly known as DSDA, is a sulfone-containing aromatic dianhydride monomer used as a structural building block in high-performance polyimide and copolyimide synthesis. Its rigid aromatic framework and polar sulfone linkage make DSDA relevant to polymer systems where thermal resistance, dimensional stability, chemical resistance, dielectric behavior and flame-retardant material design need to be balanced.

DSDA belongs to the broader category of polyimide dianhydride monomers and is also included in Aure Chemical’s Polyimide Monomers: Diamines and Dianhydrides technical guide. It is often considered in heat-resistant, electronic-grade, high-temperature insulation, membrane-related and specialty functional polyimide material development, depending on the paired diamine, formulation and processing conditions.

Basic Information of DSDA

Product Name	3,3',4,4'-Diphenylsulfonetetracarboxylic dianhydride
Abbreviation	DSDA
CAS Number	2540-99-0
Product Type	Sulfone-containing aromatic dianhydride monomer
Molecular Formula	C16H6O8S
Molecular Weight	358.28 g/mol
Appearance	Off-white to white solid
Purity	≥ 99%; batch data should be confirmed when quality documentation is available
Main Application	Sulfone-containing, heat-resistant and specialty functional polyimide synthesis
Package	1 kg/bottle, 20 kg/drum, or customized packaging
Documents	SDS, TDS and available product information upon request
Storage	Keep sealed, dry, and away from moisture
Molecular Structure

Key Features in Polyimide Design

Sulfone-containing aromatic dianhydride structure, relevant to heat-resistant and specialty polyimide dianhydride monomers.
Polar sulfone linkage may influence dielectric behavior, chain interactions, flame-retardant material design and chemical resistance depending on the paired diamine and polymer architecture.
Rigid aromatic dianhydride framework may support thermal resistance, dimensional stability and mechanical performance in selected polyimide systems.
DSDA can be considered in electronics and microelectronics polyimide applications where insulation, thermal endurance and specialty polymer design are important.
Final material properties depend on dianhydride purity, diamine selection, solvent system, imidization conditions and polymer processing method.

Pairing DSDA with Diamine Monomers

In polyimide synthesis, DSDA may be evaluated with selected polyimide diamine monomers supply portfolio to design sulfone-containing, heat-resistant and specialty PI systems. Ether-containing diamines such as BAPP CAS 13080-86-9 or TPE-Q CAS 3491-12-1 may support processability and film-forming behavior.

Fluorinated diamines such as TFMB / TFDB CAS 341-58-2 may be considered when dielectric behavior, optical performance or moisture-related properties are part of the target polymer design, while rigid aromatic diamines may be selected when thermal resistance and dimensional stability are more important.

Application Context of DSDA in Polyimide Systems

DSDA is typically used as a structural dianhydride monomer rather than a finished application material. It is commonly discussed in sulfone-containing, heat-resistant, electronic-grade and specialty functional polyimide material development, where aromatic rigidity and sulfone polarity can influence polymer performance.

Electronics and microelectronics polyimide applications – insulation, dielectric behavior and thermally stable polymer material requirements.
Aerospace and high-temperature insulation applications – heat-resistant insulation and structurally demanding polymer environments.
Energy storage and separation applications – sulfone-containing polyimide structures for membrane-related and functional polymer research.
Specialty functional polyimide materials – aromatic sulfone dianhydride selection for advanced polymer research and formulation design.

SDS, TDS and Technical Documentation

Aure Chemical can provide SDS, TDS, typical product information and packaging details for DSDA CAS 2540-99-0 upon request. Since no batch COA has been provided for this page, final purity, appearance and batch-specific quality data should be confirmed when available before order confirmation.

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Packaging, Logistics & Compliance Capabilities

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