Atomfair 4,4′-Carbonyldiphthalic anhydride BTDA C17H6O7

Description 4,4′-Carbonyldiphthalic Anhydride (CAS No. 2421-28-5) is a high-purity aromatic dianhydride with the molecular formula C17H6O7. This compound, also known as 3,3′,4,4′-Benzophenonetetracarboxylic Dianhydride , is a critical precursor in the synthesis of advanced polyimides and other high-performance polymers. Its rigid, symmetrical structure contributes to exceptional thermal stability, mechanical strength, and chemical resistance in polymeric materials. Available in fine crystalline powder form, our product is meticulously purified to ensure consistency for demanding research and industrial applications. Suitable for use in optoelectronics, aerospace composites, and microelectronics encapsulation due to its excellent dielectric properties and high glass transition temperatures.

Description

4,4′-Carbonyldiphthalic Anhydride (CAS No. 2421-28-5) is a high-purity aromatic dianhydride with the molecular formula C₁₇H₆O₇. This compound, also known as 3,3′,4,4′-Benzophenonetetracarboxylic Dianhydride, is a critical precursor in the synthesis of advanced polyimides and other high-performance polymers. Its rigid, symmetrical structure contributes to exceptional thermal stability, mechanical strength, and chemical resistance in polymeric materials. Available in fine crystalline powder form, our product is meticulously purified to ensure consistency for demanding research and industrial applications. Suitable for use in optoelectronics, aerospace composites, and microelectronics encapsulation due to its excellent dielectric properties and high glass transition temperatures.

CAS No: 2421-28-5
Molecular Formula: C17H6O7
Molecular Weight: 322.22
Exact Mass: 322.01135253
Monoisotopic Mass: 322.01135253
IUPAC Name: 5-(1,3-dioxo-2-benzofuran-5-carbonyl)-2-benzofuran-1,3-dione
SMILES: C1=CC2=C(C=C1C(=O)C3=CC4=C(C=C3)C(=O)OC4=O)C(=O)OC2=O
Synonyms: 2421-28-5, 3,3′,4,4′-Benzophenonetetracarboxylic dianhydride, 1,3-Isobenzofurandione, 5,5′-carbonylbis-, Benzophenonetetracarboxylic dianhydride, 4,4′-Carbonyldiphthalic anhydride

Application

4,4′-Carbonyldiphthalic anhydride is primarily used as a monomer for synthesizing thermally stable polyimides in aerospace and electronics industries. Its high reactivity with diamines enables production of polymers with exceptional mechanical strength and resistance to extreme temperatures. The compound is also employed in advanced coatings and adhesives where thermal oxidative stability is critical.

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