4,4'-Oxydiphthalic anhydride (ODPA) CAS 1823-59-2

Name: 4,4'-Oxydiphthalic anhydride (ODPA) CAS 1823-59-2
Brand: Aure Chemical
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Synonyms: s-ODPA; 4,4'-Oxydiphthalic dianhydride; Bis-(3-phthalyl anhydride) ether; 4,4'-Oxybis(phthalic anhydride); 5,5'-Oxybis[1,3-isobenzofurandione]; 3,3',4,4'-Diphenyl ether tetracarboxylic acid dianhydride; 3,3',4,4'-Diphenyl oxide tetracarboxylic dianhydride; 1,3-Isobenzofurandione, 5,5'-oxybis-

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Product Details

ODPA CAS 1823-59-2 for Processable and Flexible Polyimide Synthesis

4,4'-Oxydiphthalic anhydride, commonly known as ODPA, is an ether-linked aromatic dianhydride monomer used as a structural building block in high-performance polyimide, copolyimide and specialty polymer synthesis. Its aromatic dianhydride structure and flexible ether linkage make ODPA relevant to polymer systems where thermal resistance, processability, film-forming behavior, flexibility and electrical insulation performance need to be balanced.

ODPA 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 flexible films, coatings, adhesives, electronic-grade polyimides and processable specialty polymer systems, depending on the paired diamine, formulation and processing conditions.

Basic Information of ODPA

Product Name	4,4'-Oxydiphthalic anhydride
Abbreviation	ODPA
CAS Number	1823-59-2
Product Type	Ether-linked aromatic dianhydride monomer
Molecular Formula	C16H6O7
Molecular Weight	310.21 g/mol
Appearance	White to light yellow or light orange powder or crystal
Purity	≥ 99.5%; batch data should be confirmed when quality documentation is available
Main Application	Flexible, processable and electronic-grade 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

Ether-linked aromatic dianhydride structure, relevant to processable and flexible polyimide dianhydride monomers.
Flexible ether linkage may help improve chain mobility, solubility and film-forming behavior depending on the paired diamine and polymer architecture.
Aromatic dianhydride framework may support thermal resistance, chemical resistance and electrical insulation performance in selected polyimide systems.
ODPA can be considered in flexible films, coatings and adhesives where processability, adhesion and film flexibility are important.
Final material properties depend on dianhydride purity, diamine selection, solvent system, imidization conditions, film formation and polymer processing method.

Pairing ODPA with Diamine Monomers

In polyimide synthesis, ODPA may be evaluated with selected monomers from Aure Chemical’s polyimide diamine monomers supply portfolio to design flexible, processable and heat-resistant PI systems. Ether-containing diamines such as BAPP CAS 13080-86-9 or TPE-Q CAS 3491-12-1 may further support processability and film-forming behavior.

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

Application Context of ODPA in Polyimide Systems

ODPA is typically used as a structural dianhydride monomer rather than a finished application material. It is commonly discussed in flexible, processable, electronic-grade and specialty polyimide material development, where ether-linked dianhydride structure can influence solubility, film formation, adhesion and polymer processing behavior.

Flexible films, coatings and adhesives – processable PI systems where film formation, flexibility and adhesion are important.
Electronics and microelectronics polyimide applications – insulation, dielectric behavior and electronic-grade film requirements.
Aerospace and high-temperature insulation applications – thermally stable and mechanically reliable polymer environments.
Energy storage and separation applications – functional polymer, membrane and electrochemical material research contexts.
Specialty functional polyimide materials – ether-linked 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 ODPA CAS 1823-59-2 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.

Please share the required purity, target specification, quantity, destination country or port, preferred packaging method and required documents so we can review availability, documentation support and export packing options.

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Packaging, Logistics & Compliance Capabilities

Aure Chemical provides flexible packaging solutions, compliant logistics arrangements, and controlled storage practices to support laboratory-scale, pilot-scale, and commercial-scale global supply.