2,3,3',4'-BiphenyLtetracarboxylic dianhydride (α-BPDA) CAS 36978-41-3

Name: 2,3,3',4'-BiphenyLtetracarboxylic dianhydride (α-BPDA) CAS 36978-41-3
Brand: Aure Chemical
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Synonyms: 3,4'-Biphthalic anhydride; 4,5'-Bi(1,3-isobenzofurandione); 2,3,3',4'-Biphenyltetracarboxylic acid dianhydride; 2,3,3,4-biphenyl tetracarboxylic dianhydride

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Product Details

α-BPDA CAS 36978-41-3 for Optical and High-Performance Polyimide Synthesis

2,3,3',4'-Biphenyltetracarboxylic dianhydride, commonly known as α-BPDA, is an asymmetric aromatic dianhydride monomer used as a structural building block in high-performance polyimide synthesis. Compared with symmetric biphenyl dianhydride structures, the asymmetric molecular arrangement of α-BPDA may help adjust chain packing, optical behavior, processability and thermal performance depending on the paired diamine and polymer design.

α-BPDA belongs to the broader category of polyimide dianhydride monomers and is also included in Aure Chemical’s Polyimide Monomers: Diamines and Dianhydrides technical guide. It is often considered in optical polyimide, transparent polyimide, low-color PI, electronic dielectric materials and specialty high-performance polymer systems.

Basic Information of α-BPDA

Product Name	2,3,3',4'-Biphenyltetracarboxylic dianhydride
Abbreviation	α-BPDA
CAS Number	36978-41-3
Product Type	Asymmetric aromatic dianhydride monomer
Molecular Formula	C16H6O6
Molecular Weight	294.22 g/mol
Appearance	Off-white powder
Purity	≥ 99.9%
Loss on Drying	≤ 0.5%
Main Application	Optical, transparent and high-performance polyimide synthesis
Package	1 kg/bottle, 20 kg/drum, or customized packaging
Documents	COA, SDS and TDS available upon request
Molecular Structure

Typical Specification of α-BPDA

Item	Standard	Available Batch Result
Appearance	Off-white powder	Off-white powder
Purity (HPLC)	≥ 99.9%	99.99%
Loss on Drying	≤ 0.5%	0.07%
Storage Conditions	Sealed container; keep dry; store in a cool and dark place	Based on available COA reference

The above data is based on an available batch COA for α-BPDA CAS 36978-41-3. Final specifications, batch data and documentation should be confirmed by the latest COA before order confirmation.

Key Features in Polyimide Design

Asymmetric aromatic dianhydride structure, relevant to polyimide dianhydride monomers used in optical and specialty PI systems.
Non-symmetrical biphenyl structure may help adjust molecular packing and reduce strong intermolecular interactions depending on the paired diamine and polymer architecture.
High-purity α-BPDA can be considered for low-color, transparent and dielectric polyimide materials where monomer quality and batch consistency are important.
The aromatic dianhydride backbone may support thermal resistance and dimensional stability in selected polyimide systems.
Final material properties depend on dianhydride purity, diamine selection, solvent system, imidization conditions, film formation and polymer processing method.

Pairing α-BPDA with Diamine Monomers

In polyimide synthesis, α-BPDA may be evaluated with selected polyimide diamine monomers supply portfolio to design optical, low-color, dielectric and high-performance PI systems. Fluorinated diamines such as TFMB / TFDB CAS 341-58-2 may be considered when optical clarity, low coloration, dielectric behavior or reduced moisture uptake are part of the target polymer design.

Ether-containing diamines such as BAPP CAS 13080-86-9 or TPE-Q may support processability and film-forming behavior in selected PI systems. Final performance depends on the complete diamine-dianhydride pair, formulation, purity level and processing conditions.

Application Context of α-BPDA in Polyimide Systems

α-BPDA is typically used as a structural dianhydride monomer rather than a finished application material. It is commonly considered in optical, transparent, dielectric and specialty polyimide material development where reduced coloration, thermal stability and dimensional reliability need to be balanced.

Optical and transparent polyimide systems – monomer selection for reduced coloration and optical clarity in PI design.
Electronics and dielectric polyimide materials – insulation, dielectric and high-temperature polymer material requirements.
Specialty functional polyimide systems – α-BPDA may be evaluated in research contexts where asymmetric aromatic dianhydride structure and polymer packing behavior are important.
Advanced polymer R&D – α-BPDA can be considered for structure-property studies involving optical, dielectric, thermal and mechanical performance balance.

COA, SDS and Technical Documentation

Aure Chemical can provide COA, SDS, TDS, typical specifications and packaging information for α-BPDA CAS 36978-41-3 upon request. Available batch COA shows 99.99% purity by HPLC, loss on drying of 0.07%, and off-white powder appearance under the listed standard.

Please share the required purity, target specification, quantity, destination country or port, preferred packaging method and required documents so we can review availability, documentation support and export packing options.

Contact Aure Chemical for α-BPDA documentation and quotation support.

Packaging, Logistics & Compliance Capabilities

Aure Chemical provides flexible packaging solutions, compliant logistics arrangements, and controlled storage practices to support laboratory-scale, pilot-scale, and commercial-scale global supply.