Description

[4,5′-Biisobenzofuran]-1,1′,3,3′-tetrone (CAS: 36978-41-3) is a high-purity organic compound with the molecular formula C₁₆H₆O₆, widely recognized for its role as a dianhydride monomer in advanced polymer synthesis. This compound is a key precursor in the production of polyimides, which exhibit exceptional thermal stability, mechanical strength, and chemical resistance, making them ideal for high-performance applications. Available as a fine powder or crystalline solid, it is rigorously tested for purity (>98%) to ensure optimal performance in research and industrial settings. Suitable for use in electronics, aerospace, and specialty coatings, this product is packaged under inert conditions to maintain stability and shelf life.

Properties

• CAS Number: 36978-41-3
• Complexity: 567
• IUPAC Name: 4-(1,3-dioxoisobenzofuran-5-yl)isobenzofuran-1,3-dione
• InChI: InChI=1S/C16H6O6/c17-13-9-5-4-7(6-11(9)15(19)21-13)8-2-1-3-10-12(8)16(20)22-14(10)18/h1-6H
• InChI Key: FYYYKXFEKMGYLZ-UHFFFAOYSA-N
• Exact Mass: 294.01643791
• Molecular Formula: C16H6O6
• Molecular Weight: 294.21
• SMILES: C1=CC(=C2C(=C1)C(=O)OC2=O)C3=CC4=C(C=C3)C(=O)OC4=O
• Topological: 86.7
• Monoisotopic Mass: 294.01643791
• Synonyms: [4,5′-Biisobenzofuran]-1,1′,3,3′-tetrone, 3,4′-biphthalic anhydride, (4,5′-Biisobenzofuran)-1,1′,3,3′-tetrone, DTXSID1068015, DTXCID5039274, 811-539-3, 36978-41-3, [4,5′-Biisobenzofuran]-1,1′,3,3′-tetraone, 2,3,3′,4′-Biphenyltetracarboxylic dianhydride, 2,3,3,4-biphenyl tetracarboxylic dianhydride, 4-(1,3-dioxo-2-benzofuran-5-yl)-2-benzofuran-1,3-dione, 2,3,3′,4′-biphenyl tetracarboxylic dianhydride, MFCD09030654, 5-(1,3-dioxo-1,3-dihydro-2-benzofuran-4-yl)-1,3-dihydro-2-benzofuran-1,3-dione, 2,3,3′,4′-BiphenyLtetracarboxylic (|A-BPDA), a-BPDA, SCHEMBL1689836, BCP32519, AKOS015895820, AC-18535, DS-15135, SY104780, DB-069477, B4629, CS-0037686, D71075, 2,3,3,4-BIPHENYLTETRACARBOXYLICDIANHYDRIDE, 2,3,3′,4′-Biphenyltetracarboxylic dianhydride (a-BPDA), [4,5 inverted exclamation mark -Biisobenzofuran]-1,1 inverted exclamation mark ,3,3 inverted exclamation mark -tetraone, 2,3,3 inverted exclamation marka,4 inverted exclamation marka-biphenyl tetracarboxylic dianhydride

[4,5′-Biisobenzofuran]-1,1′,3,3′-tetrone is primarily used as a monomer in the synthesis of aromatic polyimides, which are critical for high-temperature-resistant films and adhesives. Its rigid structure contributes to polymers with low thermal expansion and high dielectric properties, making it valuable in microelectronics and flexible circuit boards. Researchers also utilize it to develop advanced composite materials for aerospace components due to its lightweight and durability.

Safety and Hazards

GHS Hazard Statements

• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (50%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)
• STOT SE 3 (50%)

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