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Product Code B1931-100g
Price $48 ex. VAT

A benzophenone-cored dianhydride building block

As an intermediate for the synthesis of polyimides in application of photosensitizers, high-performance polymers and OFETs


Specifications | MSDS | Literature and Reviews


3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA, CAS number 2421-28-5) is derived from benzophenone with two dianhydride on both terminals. The primary use of 3,3',4,4'-Benzophenonetetracarboxylic dianhydride is for synthesizing polyimide with primary amines undergoing nucleophilic substitution followed by condensation reactions. Benzophenone-cored polyimide is used in photocatalytic dye degradation applications such as methylene blue in water. Potentially it can extend its applications to dye-sensitized solar cells (DSSCs) and photocatalytic reactions.

The polyimide/copolymer formed by BTDA has shown high thermal stability and good mechanical properties. This polyimide is an electret and used as a dielectric layer for high performance OFET memory devices.

General Information


CAS Number 2421-28-5
Chemical Formula C17H6O7
Full Name 3,3',4,4'-Benzophenonetetracarboxylic dianhydride
Molecular Weight 322.23 g/mol
Synonyms Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride
4,4′-Carbonyldiphthalic anhydride
BTDA
Classification / Family Benzophenone derivatives, Dianhydride building blocks, Polyimides, OFETs, Photosensitizers

Chemical Structure


3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA) chemical structure, CAS 2421-28-5
3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA),chemical structure, CAS 2421-28-5

Product Details


Purity >98.5%
Melting Point Tm = 218 °C – 222 °C
Appearance White to off-white powder

MSDS Documentation


3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA)3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA) MSDS Sheet

Literature and Reviews


  1. Developing high-efficiency π conjugated polymer semiconductor for photocatalytic degradation of dyes under visible light irradiation, S. Chu et al., RSC Adv., 4, 57153-57158(2014); DOI: 10.1039/C4RA11345D.
  2. Electrospun antibacterial poly(vinyl alcohol)/Ag nanoparticles membrane grafted with 3,3′,4,4′-benzophenone tetracarboxylic acid for efficient air filtration, S. Li., Appl. Surf. Sci., 533, 147516(2020); DOI: 10.1016/j.apsusc.2020.147516.
  3. Intrinsically negative photosensitive polyimides with enhanced high-temperature dimensional stability and optical transparency for advanced optical applications via simultaneous incorporation of trifluoromethyl and benzanilide units: preparation and properties, Y. Gao et al., polymers, 14, 3733(2022), DOI: 10.3390/polym14183733.
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