Description

3,3',4,4'-Biphenyltetracarboxylic Dianhydride is a high-purity aromatic dianhydride monomer essential for advanced polymer synthesis. This compound matters for its role as a critical building block in the production of high-performance polyimides and polyamide-imides, materials prized for their exceptional thermal stability and mechanical strength. It is primarily needed by manufacturers in the electronics, aerospace, and specialty plastics industries seeking to develop next-generation insulating films, high-temperature adhesives, and advanced composite materials.

Application

• Polyimide Precursor: A key monomer for synthesizing high-performance polyimide resins and films.
• Electronic Materials: Used in the production of dielectric layers, flexible printed circuit boards (FPCBs), and semiconductor passivation coatings.
• High-Temperature Polymers: Serves as a building block for polyamide-imides (PAI) and other polymers used in aerospace and automotive components.
• Advanced Composites: Incorporated into matrix resins for carbon fiber composites requiring superior heat resistance.
• Optical Materials: Utilized in the development of transparent polyimide films for flexible displays and optical waveguides.
• Adhesives & Coatings: A raw material for high-temperature resistant adhesives, wire enamels, and protective coatings.

Basic Information

Item	Detail
Product Name	3,3',4,4'-Biphenyltetracarboxylic Dianhydride
CAS No.	2420-87-3
Molecular Formula	C16H6O6
Molecular Weight	294.22 g/mol
Synonyms	BPDA; Biphenyl-3,3',4,4'-tetracarboxylic dianhydride; 3,3',4,4'-Biphenyltetracarboxylic acid dianhydride; 3,3',4,4'-Diphenyltetracarboxylic dianhydride; 3,3',4,4'-Biphenyl tetracarboxylic dianhydride; 3,3',4,4'-Benzophenonetetracarboxylic dianhydride (historical); s-BPDA
EINECS	219-348-1

Quality Control

Our 3,3',4,4'-Biphenyltetracarboxylic Dianhydride is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets the high-purity standards required for advanced polymer applications. Certificates of Analysis (COA) documenting purity, identity, and key impurity profiles are available upon request to support your quality assurance and R&D processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent hydrolysis. Use appropriate handling procedures to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 99.0%
Melting Point	≥ 295°C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Chloride (Cl)	≤ 50 ppm

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