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4,4'-(4,4'-isopropylidenediphenoxy)bis-(phthalic anhydride) (BPADA)

CAS Number 38103-06-9

Chemistry Building Blocks, COF Ligands, Diamines and Dianhydrides, Heterocyclic Building Blocks, Monomers, Porous Organic Frameworks


Product Code B1991-LT-50g
Price $95 ex. VAT

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A bisphenol A cored diphthalic anhydride building block

As an intermediate for polyimides preparation in application of ion transporting membranes, display substrates and high performance polymers


4,4'-(4,4'-isopropylidenediphenoxy)bis-(phthalic anhydride) (BPADA) is a dianhydride building block with a bisphenol A core. BPADA is a precursor for the synthesis of the polyimides that have high thermal stability and strong mechanical properties, owing to its bisphenol A core. The polyimide films synthesised from this molecule are not fully conjugated, resulting a high optical transparency. Those film are equibiaxially stretchable and have high glass transition temperature (Tg = 207 °C), which are ideal for flexible display substrates. Other than high thermal resistance, this kind of polyimides are also chemically inert and can be applied as ion transporting membranes in fuel cells applications.

BPADA is also used to fabricate aerogels exhibiting super hydrophobicity (lotus effect).

General Information

CAS Number 38103-06-9
Chemical Formula C31H20O8
Full Name 2,2-Bis(4-(3,4-dicarboxyphenoxy)phenyl)propane dianhydride
Molecular Weight 520.49 g/mol
Synonyms 4,4′-Bisphenol A diphthalic anhydride, 4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic anhydride
Classification / Family Dianhydride building blocks, Polyimides, Fuel cell membranes

Chemical Structure

4,4'-(4,4'-isopropylidenediphenoxy)bis-(phthalic anhydride)(BPADA) chemical structure, CAS 38103-06-9
4,4'-(4,4'-isopropylidenediphenoxy)bis-(phthalic anhydride) (BPADA) chemical structure, CAS 38103-06-9

Product Details

Purity >99%
Melting Point Tm = 184 °C – 187 °C
Appearance Pale yellow to yellow powder/crystal

MSDS Documentation

4,4'-(4,4'-isopropylidenediphenoxy)bis-(phthalic anhydride)(BPADA)4,4'-(4,4'-isopropylidenediphenoxy)bis-(phthalic anhydride) (BPADA) MSDS Sheet

Literature and Reviews

  1. Equibiaxially stretchable colorless and transparent polyimides for flexible display substrates, J.-H. Chang, Rev. Adv. Mater. Sci., 59, 1–9(2020); DOI: 10.1515/rams-2020-0003.
  2. Intrinsically electroactive polyimide microspheres fabricated by electrospraying technology for ascorbic acid detection, C.-J. Weng et al., J. Mater. Chem., 21, 15666-15672(2011); DOI: 10.1039/c1jm12422f.
  3. Ion transport within random-sulfonated and block-sulfonated copolyimides, M. Hibbs et al., J. Mater. Sci., 48, 1303–1309(2013); DOI: 10.1007/s10853-012-6873-5.
  4. Template-free self-assembly of fluorine-free hydrophobic polyimide aerogels with lotus or petal effect, X. Li et al., ACS Appl. Mater. Interfaces, 10(19), 16901–16910(2018); DOI: 10.1021/acsami.8b04081.
  5. Thermal and mechanical properties of polyimide/nano-silica hybrid films, M.-H. Tsai et al., Thin Solid Films, 519, 5238-5242(2011); DOI: 10.1016/j.tsf.2011.01.167.

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.

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