Trimellitic anhydride

Trimellitic Anhydride (CAS No. 552-30-7), with the chemical formula C₉H₄O₅, is a white to light yellow crystalline powder. The anhydride group and benzene ring in its molecular structure provide high reactivity and excellent heat resistance. As an important organic synthesis intermediate, it finds wide applications in plasticizers, resins, coatings and electronic materials.

  • Synonyms:

    TMA, 1,2,4-Benzenetricarboxylic anhydride

  • Formula:

  • CAS NO.:

    552-30-7

  • Package:

    25KG/BAG

  • Certificate:

    Reach, ISO9001

Our Achievement

Global Reach: Our Trimellitic Anhydride has been steadily supplied to global markets, mainly exported to Japan, South Korea, Germany, United States, India, Vietnam and other countries and regions.


Equivalent Alternatives:   Our Trimellitic Anhydride has served as a reliable alternative to international producers such as BASF and Lonza for numerous manufacturers in chemical, plastic and electronic material sectors, helping them ensure excellent product performance while effectively optimizing overall costs.

Key Applications
  • Plasticizer synthesis
  • Polyimide resin
  • Insulating paint material
  • Powder coating
  • Electronic chemical
The main detailed uses of the product
  • heat-resistant plasticizer synthesis
    heat-resistant plasticizer synthesis

    As key raw material for trimellitate plasticizers, used in production of high-temperature wire and cable materials, providing excellent heat resistance and durability.

  • polyimide resin synthesis
    polyimide resin synthesis

    Serves as monomer for high-performance polyimide resins, used in高端 applications like flexible circuit boards and insulating films in electronics industry.

  • insulating paint manufacturing
    insulating paint manufacturing

    As important component of insulating paints, used for insulation treatment of motors and transformers, providing outstanding heat-resistant insulation performance.

  • powder coating applications
    powder coating applications

    Functions as crosslinking agent in powder coatings for surface coating of home appliances and building materials, providing excellent weather resistance and mechanical properties.

Why Choose Our Trimellitic anhydride?


Our Trimellitic Anhydride boasts high purity (≥99.5%), low free acid content and consistent quality specifications. We offer:

stable supply: Based on advanced oxidation process technology with continuous supply capability

technical support: Guidance for product applications and formulation optimization

customized service: Products with specific particle size distribution available according to requirements

As an important fine chemical intermediate, Trimellitic Anhydride plays a key role in enhancing material heat resistance and electrical properties.

Commitment to Quality and Innovation

We are committed to providing high-quality chemical products meeting international standards. Through strict quality control and continuous technological innovation, we ensure our products not only meet current customer needs but also help address future development challenges.

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