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Atomfair 3,4′-Oxydiphthalic Anhydride C16H6O7 CAS 50662-95-8

3,4′-Oxydiphthalic Anhydride (CAS No. 50662-95-8) is a high-purity aromatic dianhydride with the molecular formula C16H6O7. This compound, also known by its IUPAC name 4-[(1,3-dioxo-2-benzofuran-5-yl)oxy]-2-benzofuran-1,3-dione , is a critical building block in the synthesis of advanced polyimides and other high-performance polymers. Its unique oxy-bridged diphthalic structure imparts exceptional thermal stability, mechanical strength, and chemical resistance to the resulting materials. Our product is rigorously tested to ensure >98% purity (HPLC) and is supplied as a fine, off-white to pale yellow crystalline powder. It is packaged under inert atmosphere to prevent moisture absorption and degradation. Ideal for research and industrial applications requiring precise…

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Description

3,4′-Oxydiphthalic Anhydride (CAS No. 50662-95-8) is a high-purity aromatic dianhydride with the molecular formula C16H6O7. This compound, also known by its IUPAC name 4-[(1,3-dioxo-2-benzofuran-5-yl)oxy]-2-benzofuran-1,3-dione, is a critical building block in the synthesis of advanced polyimides and other high-performance polymers. Its unique oxy-bridged diphthalic structure imparts exceptional thermal stability, mechanical strength, and chemical resistance to the resulting materials.

Our product is rigorously tested to ensure >98% purity (HPLC) and is supplied as a fine, off-white to pale yellow crystalline powder. It is packaged under inert atmosphere to prevent moisture absorption and degradation. Ideal for research and industrial applications requiring precise stoichiometry in polymer synthesis.

Key applications include: polyimide resins for aerospace composites, high-temperature adhesives, dielectric films for flexible electronics, and gas separation membranes. The compound’s dual anhydride functionality enables controlled crosslinking and copolymerization with various diamines.

Properties

  • CAS Number: 50662-95-8
  • Complexity: 583
  • IUPAC Name: 4-(1,3-dioxoisobenzofuran-5-yl)oxyisobenzofuran-1,3-dione
  • InChI: InChI=1S/C16H6O7/c17-13-8-5-4-7(6-10(8)15(19)22-13)21-11-3-1-2-9-12(11)16(20)23-14(9)18/h1-6H
  • InChI Key: OPVHOFITDJSMOD-UHFFFAOYSA-N
  • Exact Mass: 310.01135253
  • Molecular Formula: C16H6O7
  • Molecular Weight: 310.21
  • SMILES: C1=CC2=C(C(=C1)OC3=CC4=C(C=C3)C(=O)OC4=O)C(=O)OC2=O
  • Topological: 96
  • Monoisotopic Mass: 310.01135253
  • Synonyms: 3,4′-Oxydiphthalic Anhydride, 805-890-1, 50662-95-8, 4-((1,3-Dioxo-1,3-dihydroisobenzofuran-5-yl)oxy)isobenzofuran-1,3-dione, 4-[(1,3-Dihydro-1,3-dioxo-5-isobenzofuranyl)oxy]-1,3-isobenzofurandione, MFCD22460472, 4-[(1,3-dioxo-2-benzofuran-5-yl)oxy]-2-benzofuran-1,3-dione, 2,3,3′,4′-Tetracarboxydiphenyl oxide dianhydride (|A-ODPA), 5-[(1,3-dioxo-1,3-dihydro-2-benzofuran-4-yl)oxy]-1,3-dihydro-2-benzofuran-1,3-dione, 3,4′-OxydiphthalicAnhydride, 2,3,3′,4′-DIPHENYL ETHER TETRACARBOXYLIC ACID DIANHYDRIDE, 3,4’oxydiphthalic anhydride, SCHEMBL263838, DTXSID50561838, OPVHOFITDJSMOD-UHFFFAOYSA-N, AC7785, 3,4?-OXYDIPHTHALIC ANHYDRIDE, AKOS016003976, FO62673, AS-72795, SY038100, DB-348980, O0384, 3,4 inverted exclamation mark -Oxydiphthalic Anhydride, 4-(1,3-dioxoisobenzofuran-5-yl)oxyisobenzofuran-1,3-dione, 4-[(1,3-Dioxo-1,3-dihydro-2-benzofuran-5-yl)oxy]-2-benzofuran-1,3-dione

Application

3,4′-Oxydiphthalic Anhydride serves as a key monomer for synthesizing thermally stable polyimides used in microelectronics packaging. The material’s high glass transition temperature makes it suitable for flexible printed circuit boards and insulating layers in semiconductor devices. Researchers utilize this dianhydride to develop advanced polymer membranes with selective gas permeability for CO2 capture applications. Its rigid aromatic structure contributes to exceptional dimensional stability in composite materials for aerospace components.

Safety and Hazards

GHS Hazard Statements

  • H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
  • H318 (100%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

Precautionary Statements

  • P264, P264+P265, P280, P302+P352, P305+P354+P338, P317, P321, P332+P317, and P362+P364

Hazard Classes and Categories

  • Skin Irrit. 2 (100%)
  • Eye Dam. 1 (100%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.

Disclaimer

Intended Use & Restrictions

This product is sold exclusively for laboratory research, analytical testing, or non-commercial purposes.

  • Strictly prohibited: Resale, repackaging, or formulation into commercial products.
  • Not approved for human/animal use, diagnostics, or manufacturing (including pharmaceuticals, agrochemicals, or consumer goods).

Patent & Regulatory Compliance

Certain molecules may be protected by active patents or regulatory restrictions.

  • Buyers must independently verify patent status (e.g., via USPTO/EPO/CNIPA) and comply with local laws.
  • Atomfair LLC does not provide legal assurances regarding patent non-infringement or jurisdictional compliance.

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  • Use this product only as permitted by law.
  • Indemnify Atomfair LLC against all claims arising from misuse, patent infringement, or regulatory violations.

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