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

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

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4,4'-Oxydiphthalic anhydride (ODPA, CAS 1823-59-2) is an aromatic dianhydride primarily used as a monomer in the synthesis of high-performance polyimides, epoxy resins, and other polymers, offering excellent thermal stability, solvent resistance, chemical resistance, mechanical strength, and electrical properties.

Basic Information of ODPA

Product Name	4,4'-Oxydiphthalic anhydride
Abbreviation	ODPA
CAS Number	1823-59-2
Molecular Formula	C16H6O7
Molecular Weight	310.21 g/mol
Appearance	White to Light yellow to light orange powder to crystal
Purity	≥99.5%
Package	1kg/bottle, 20kg/drum, or customized
Molecular formula

Key Properties

High thermal stability and chemical resistance
Used as a monomer for high-performance polyimide materials
Good chemical inertness in polyimide-derived films
Suitable for high-temperature and aerospace applications

Key Applications of ODPA

Electronics and Microelectronics: Employed in polyimide films for flexible copper clad laminates (FCCL), insulating materials, and high-conductivity nanohybrid films for electronic components.

Energy Storage: Utilized in polyimides for separators in supercapacitors and anodes in lithium-ion batteries, due to its electrolyte compatibility and performance under high temperatures.

Composites and Materials: Incorporated into composite materials, foams, molded parts, and films for enhanced durability and heat resistance in industrial applications.

Adhesives and Resins: Applied in epoxy resins (e.g., bisphenol A-type and novolac-type) and adhesives for bonding in high-performance settings, as well as in polyamide materials.

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