Description

5,5'-((1,1'-Biphenyl)-4,4'-Diylbis(Oxy))Bis-1,3-Isobenzofurandione is a high-purity aromatic dianhydride monomer of significant industrial importance. This compound serves as a critical building block for the synthesis of advanced polyimides and other high-performance polymers. It is essential for manufacturers and R&D facilities in the electronics, aerospace, and specialty coatings sectors seeking to develop materials with exceptional thermal stability and mechanical properties.

Application

• Polyimide Synthesis: A key monomer for producing high-temperature, high-strength polyimide resins and films used in flexible printed circuits (FPCs) and semiconductor packaging.
• Advanced Composites: Used in the formulation of matrix resins for carbon fiber composites in aerospace and automotive applications.
• Specialty Coatings: Imparts heat resistance and dielectric properties to protective coatings for wires, cables, and electronic components.
• Adhesives & Sealants: Enhances the thermal and chemical resistance of high-performance adhesives for demanding environments.
• Liquid Crystal Polymers (LCPs): Acts as a comonomer in the synthesis of LCPs for precision molded parts and high-barrier packaging.
• Chemical Intermediate: Serves as a versatile precursor for further chemical modifications to create novel diamines or other functional monomers.

Basic Information

Product Name	5,5'-((1,1'-Biphenyl)-4,4'-Diylbis(Oxy))Bis-1,3-Isobenzofurandione
CAS No.	26177-82-2
Molecular Formula	C32H14O8
Molecular Weight	526.45 g/mol
Synonyms	4,4'-Biphenyldiyl Bis(trimellitate) Dianhydride; BPDA (Biphenyltetracarboxylic Dianhydride) derivative; 4,4'-Bis(trimellitic anhydride) Ether; 4,4'-Oxybis(phthalic anhydride) biphenyl derivative; 5,5'-(Biphenyl-4,4'-diylbis(oxy))diisobenzofuran-1,3-dione; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Every batch of 5,5'-((1,1'-Biphenyl)-4,4'-Diylbis(Oxy))Bis-1,3-Isobenzofurandione undergoes rigorous analytical testing to ensure it meets stringent purity and consistency standards required for high-performance polymer synthesis. Our quality assurance protocol is designed to support your Good Manufacturing Practice (GMP) and ISO-aligned processes. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept sealed to prevent moisture absorption, which can affect reactivity. Keep away from incompatible materials such as strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.5%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 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.