HBPDA (CAS 122640-83-9) is an alicyclic non-conjugated dianhydride monomer with bicyclohexyl backbone. It is key raw material for preparing transparent, soluble polyimide films. Compared with aromatic dianhydrides, its cyclohexyl structure brings excellent optical transparency and good solubility in organic solvents, widely used for optoelectronic devices, flexible OLED, OPV, high-temperature dielectric materials and advanced polymer research. TNJ Chemical is a professional manufacturer and exporter since 2001. We guarantee high-quality products, competitive prices and thoughtful service. If you want to buy or have any other inquiries, please contact sales@tnjchem.com
Product Data
Product Name Dicyclohexyl‑3,4,3',4'‑tetracarboxylic DianhydrideCAS Number 122640‑83‑9
Synonyms HBPDA; Dodecahydro‑[5,5'‑biisobenzofuran]‑1,1',3,3'‑tetraone
Molecular Formula C16H18O6Molecular Weight 306.31 g/mol
Chemical Family Alicyclic tetracarboxylic dianhydride monomer
Available Grade Research Grade ≥97.0%; High‑purity Grade ≥99.0%Physical & Chemical Characteristics
Physical form White to off-white crystalline powder / crystals
Odour Odourless
Melting range 208-212 °C
Density 1.372 g/cm³ (calculated)
Solubility Soluble in DMF, DMAc, DMSO; Hydrolyzes in water / humid air to corresponding tetracarboxylic acid
Processing hint Anhydride group sensitive to moisture. Handle under dry inert atmosphere. Avoid water and high humidity.
Quality Requirements
| Test Parameter | Research Grade | High‑Purity Grade | Test Method |
|---|---|---|---|
| Assay (HBPDA) | ≥97.0 % | ≥99.0 % | HPLC / Titration of anhydride group |
| Melting Point | 208‑212 °C | 208‑212 °C | Capillary melting point apparatus |
| Loss on Drying | ≤0.5 % | ≤0.2 % | Gravimetric |
| Residue on Ignition | ≤0.1 % | ≤0.05 % | Gravimetric |
| Heavy Metals (Pb+Cd+Hg+As) | ≤10 ppm | ≤5 ppm | AAS |
| Free Carboxylic Acid | ≤1.0 % | ≤0.5 % | Titration |
Functions & Recommended Applications
Transparent Polyimide Synthesis: Alicyclic dianhydride monomer for colorless & transparent polyimide (CPI). Polyimide derived from HBPDA shows good solubility for solution spin‑coating and ink‑jet printing processing.
Optoelectronics: Flexible OLED substrate, organic photovoltaic OPV protective layer, optical coating materials.
Advanced Dielectric Materials: High‑temperature capacitor dielectric film for aerospace and electronic components.
R&D fine polymer material: high‑performance polyimide resin modification.Important note:
HBPDA is moisture‑sensitive; anhydride groups will hydrolyze upon contact with water or humid air, generating tetracarboxylic acid and affecting polymerization performance. End‑user shall validate suitability for own formulation and final application. Refer to SDS for full safety guidance.
Logistics & Storage Information
Packaging options: 25 kg fibre‑drum with inner PE moisture‑proof bag.
Lead‑time: bulk order:7‑15 working days against deposit.
Shipment modes: sea freight, air freight, international courier.
Storage condition: Keep container tightly sealed. Store in cool, dry, dark warehouse, strictly protect from moisture. Recommended storage temperature ≤25 °C.
Shelf‑life: 18 months under original sealed dry storage.
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