Description

5-[2-(1,3-Dioxoisobenzofuran-5-Yl)Propan-2-Yl]Isobenzofuran-1,3-Dione is a high-purity, symmetrical aromatic dianhydride compound that serves as a critical building block in advanced polymer synthesis. Its value lies in its ability to introduce rigid, thermally stable moieties into polymer backbones, significantly enhancing material performance. This product is essential for R&D chemists and process engineers in the specialty polymers, high-performance resins, and advanced electronics sectors seeking to develop materials with superior thermal and mechanical properties.

Application

• Polyimide Precursor: A key monomer for the synthesis of high-temperature, high-strength polyimide resins used in aerospace and automotive components.
• Epoxy Curing Agent & Hardener: Imparts exceptional heat resistance and rigidity to epoxy systems for advanced composites and electronic encapsulants.
• Specialty Polymer Intermediate: Used in the production of polyetherimides (PEI), polyamide-imides (PAI), and other engineering plastics.
• Electronic Materials: Employed in the fabrication of dielectric layers, flexible printed circuit boards (FPCBs), and semiconductor packaging materials.
• Adhesive & Coating Formulations: Enhances the thermal stability and chemical resistance of high-performance industrial adhesives and protective coatings.
• Research & Development: Serves as a versatile scaffold in organic synthesis and materials science research for novel polymer architectures.

Basic Information

Product Name	5-[2-(1,3-Dioxoisobenzofuran-5-Yl)Propan-2-Yl]Isobenzofuran-1,3-Dione
CAS No.	1779-17-5
Molecular Formula	C20H12O6
Molecular Weight	348.31 g/mol
Synonyms	2,2-Bis(3,4-dicarboxyphenyl)propane dianhydride; Bis(3,4-dicarboxyphenyl)propane dianhydride; BPADA (common abbreviation); 4,4'-(Propane-2,2-diyl)bis(1,3-dioxoisobenzofuran); 2,2-Bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride (related isomer); Bisphenol A dianhydride (contextual name); Dianhydride monomer
EINECS	Contact for details

Quality Control

Every batch of our 5-[2-(2-(1,3-Dioxoisobenzofuran-5-Yl)Propan-2-Yl]Isobenzofuran-1,3-Dione is manufactured under a strict quality management system. We provide comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles to ensure it meets the exacting standards required for advanced polymer applications. Our quality commitment aligns with cGMP principles where applicable, and specifications can be tailored to support your R&D and production needs.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, store in a cool, dry place, ideally under an inert atmosphere such as nitrogen or argon to prevent hydrolysis. Recommended storage temperature is 2-8°C for long-term stability. Keep the container tightly sealed when not in use.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 10 ppm
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.