FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU subsidiary.

It looks like you are using an unsupported browser. You can still place orders by emailing us on info@ossila.com, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.

2,3,3',4'-Biphenyltetracarboxylic dianhydride (a-BPDA)

CAS Number 36978-41-3

Chemistry Building Blocks, Diamines and Dianhydrides, Heterocyclic Building Blocks, Monomers


Product Code B2131-LT-10g
Price $100 ex. VAT

Quality assured

Expert support

Volume discounts

Worldwide shipping

Fast and secure


A non-symmetrical biphenyl dianhydride

For the synthesis of polyimides in application of batteries, electrochromics, and high performance polymers


2,3,3',4'-Biphenyltetracarboxylic dianhydride (a-BPDA), a derivative of biphenyl, has two phthalic anhydrides linked unsymmetrically at 3- and 4-position. The backbone of the polyimides synthesised from 2,3,3',4'-Biphenyltetracarboxylic dianhydride is twisted, leading to a suppression of intermolecular charge transfer. Thus, the polyimides are transparent and heat resistant. Diimides synthesized from a-BPDA and cyclohexylamine display long-lived luminescence up to 1.3 seconds after ultraviolet light irradiation.

2,3,3',4'-Biphenyltetracarboxylic dianhydride is also used to synthesize covalent organic frameworks(COFs) with low dielectric constant (2.72), low thermal expansion coefficient (62.2 ppm/K) and high breakdown strength (412.8 kV/mm). It is ideal for low signal loss electronic packaging. Lithium battery cathodes of the polyimides-decorated carbon nanotubes (CNTs) show a high capacity of 163 mAh/g at 0.05 A/g and a rate capability of 122 mAh/g at 5 A/g.

General Information

CAS Number 36978-41-3
Chemical Formula C16H6O6
Full Name 2,3,3',4'-Biphenyltetracarboxylic dianhydride
Molecular Weight 294.22 g/mol
Synonyms 3,4'-Biphthalic anhydride, 4,5'-Bi-2-benzofuran-1,1',3,3'-tetrone
Classification / Family Dianhydride building block, Polyimides, COFs, Batteries, High performance polymers, Electrochromics

Chemical Structure

2,3,3',4'-Biphenyltetracarboxylic dianhydride (a-BPDA) chemical structure, CAS 36978-41-3.
2,3,3',4'-Biphenyltetracarboxylic dianhydride (a-BPDA) chemical structure, CAS 36978-41-3

Product Details

Purity >99%
Melting Point Tm = 195 °C – 205 °C
Appearance White to off-white powder/crystal

MSDS Documentation

2,3,3',4'-Biphenyltetracarboxylic dianhydride (a-BPDA)2,3,3',4'-Biphenyltetracarboxylic dianhydride (a-BPDA) MSDS Sheet

Literature and Reviews

  1. Long-lived luminescence emitted from imide compounds dispersed in polymer matrices after continuous ultraviolet irradiation and its relation to oxygen quenching, M. Doi et al., ChemPhotoChem., e202200310(2023); DOI: 10.1002/cptc.202200310.
  2. Colorless, heat resistant polyimide films derived from 2,3,3′,4′-biphenyltetracarboxylic dianhydride, G. Song et al., IOP Conf. Series: Materials Science and Engineering, 733, 012035(2020); DOI: 10.1088/1757-899X/733/1/012035.
  3. Construction of all-organic low dielectric polyimide hybrids via synergistic effect between covalent organic framework and cross-linking structure, W. Zhao et al., Nano Mater. Sci., in press(2023); DOI: 10.1016/j.nanoms.2023.02.002.
  4. Macroporous polyimide aerogels: a comparison between powder microparticles synthesized via wet gel grinding and emulsion process, S. Dayarian et al., Langmuir, 39, 1804-1814(2023); DOI: 10.1021/acs.langmuir.2c02696.
  5. Novel polyimides containing flexible carbazole blocks with electrochromic and electrofluorescencechromic properties, R. Zheng et al., RSC Adv., 10, 6992(2020); DOI: 10.1039/c9ra10515h.
  6. Rational integration of carbon nanotubes into chain-engineered bipolar polyimides as core-shell heterostructured electrodes for polymer-based symmetrical full batteries, Q. Zhang et al., Adv. Funct. Mater., 33(5), 2211590(2022), DOI: 10.1002/adfm.202211590.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

Return to the top