1,2,4,5-cyclohexanetetracarboxylic dianhydride (HPMDA)

Basic Information of HPMDA

Product Name	1,2,4,5-Cyclohexanetetracarboxylic dianhydride
Abbreviation	HPMDA
CAS Number	2754-41-8
Product Type	Cycloaliphatic dianhydride monomer
Molecular Formula	C10H8O6
Molecular Weight	224.17 g/mol
Appearance	White to almost white powder or crystal
Purity	≥ 99%; batch data should be confirmed when quality documentation is available
Main Application	Transparent, low-color, processable and membrane-related polyimide synthesis
Package	1 kg/bottle, 20 kg/drum, or customized packaging
Documents	SDS, TDS and available product information upon request
Storage	Keep sealed, dry, and away from moisture
Molecular Structure

Key Features in Polyimide Design

• Cycloaliphatic dianhydride structure, relevant to transparent and low-color polyimide dianhydride monomers.

• Alicyclic structure may help reduce charge-transfer interactions and support optical clarity depending on the paired diamine and polymer architecture.

• Non-aromatic dianhydride design may be considered when low coloration, moisture resistance, dielectric behavior and flexible film performance are part of the target material design.

• HPMDA can be considered in optical and transparent polyimide systems where reduced coloration and optical clarity are important.

• Final material properties depend on dianhydride purity, diamine selection, solvent system, imidization conditions, film formation and polymer processing method.

Pairing HPMDA with Diamine Monomers

Ether-containing diamines such as BAPP CAS 13080-86-9 or TPE-Q CAS 3491-12-1 may help adjust solubility, flexibility and film-forming behavior, while rigid aromatic diamines may be selected when thermal resistance and dimensional stability are more important.

Application Context of HPMDA in Polyimide Systems

HPMDA is typically used as a structural dianhydride monomer rather than a finished application material. It is commonly discussed in transparent, low-color, flexible, dielectric and membrane-related polyimide material development, where alicyclic dianhydride structure can influence optical behavior, moisture absorption, polymer morphology and processing performance.

• Optical and transparent polyimide systems – monomer selection for reduced coloration, optical clarity and transparent film design.

• Electronics and microelectronics polyimide applications – dielectric, insulation and moisture-related material requirements.

• Energy storage and separation applications – membrane-related and functional polymer research contexts.

• Flexible films, coatings and adhesives – flexible, processable and low-color PI material systems.

• Specialty functional polyimide materials – alicyclic dianhydride selection for advanced polymer research and formulation design.

Related Polyimide Monomer Supply Guides

For a broader technical overview of both diamine and dianhydride monomer families, please review Polyimide Monomers: Diamines and Dianhydrides.

Related Polyimide Monomers

• CBDA CAS 4415-87-6 – cycloaliphatic dianhydride for transparent and low-dielectric PI systems.

• 6FDA CAS 1107-00-2 – fluorinated dianhydride often considered in transparent and low-dielectric PI systems.

• TFMB / TFDB CAS 341-58-2 – fluorinated diamine for transparent, low-dielectric and high-performance PI systems.

SDS, TDS and Technical Documentation

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