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    HomeProductsBasic & Fine ChemicalsChemical IntermediatesPyromellitic Dianhydride (PMDA) CAS 89-32-7
    • Pyromellitic Dianhydride (PMDA) CAS 89-32-7

    Pyromellitic Dianhydride (PMDA) CAS 89-32-7

    Pyromellitic Dianhydride (PMDA) is a highly reactive aromatic anhydride and essential organic monomer utilized primarily in the synthesis of high-performance polyimide (PI) films and resins. Widely recognized in the chemical sector as 1,2,4,5-Benzenetetracarboxylic dianhydride, this white crystalline powder serves as a critical curing agent for epoxy resins and a cross-linking agent for thermoplastics, imparting exceptional thermal stability and electrical insulation properties. We offer this 99% industrial-grade raw material with competitive factory pricing to support the electronics, aerospace, and coating industries. Our supply chain ensures reliable bulk supply availability and customized specifications, fully accompanied by MSDS, TDS, COA documentation for strict safety handling and compliance.

    • CAS: 89-32-7
    • Synonyms: 1,2,4,5-Benzenetetracarboxylic dianhydride, PMDA, Pyromellitic dianhydride, Benzene-1,2,4,5-tetracarboxylic dianhydride
    • Einecs: 201-898-9
    • Molecular Formula: C10H2O6
    • Grade: Industrial grade 99%
    • Package: 200kg iron drum or 50kg plastic drum packing
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    Product Description


    Pyromellitic dianhydride, referred to as homogenic anhydride, is pure white or slightly yellow crystals. Exposure to humid air quickly absorbs moisture from the air and hydrolyzes into homotetracarboxylic acid. Soluble in organic solvents such as dimethyl sulfoxide, dimethylformamide, acetone, etc., insoluble in ether, chloroform and benzene. It is mainly used as a raw material for polyimide, a curing matting agent for epoxy resins and a crosslinking agent for polyester resins.

    Synonyms: Dianhydride Homotetracarboxylic Acid Chinese Synonyms 1,2,4,5-Dianhydride Homotetracarboxylic Acid; benzene tetraic anhydride; 1,2,4,5-Phthalic anhydride; 1,2,4,5-Bentetracarboxylic acid anhydride;

    CAS No. 89-32-7

    Molecular Formula C10H2O6

    Molecular Weight 218.12

    EINECS No. 201-898-9

    Application: Used as a curing agent for epoxy resin and a crosslinking agentfor polyester resin

    Content: 99% Properties: white crystalline

    Packaging: 25kg/bag

    Product Use:

    This product is mainly used as a raw material for polyimide, a curing matting agent for epoxy resin and Polyester resin of crosslinkers.

    It is used to manufacture polyimide films, polyimide resins, powder coating matting agents, and advanced electrical insulation materials.

    It is used to make polyimide resin, high-temperature resistant electrical insulation paint, PVC plasticizer, synthetic resin crosslinker and epoxy resin curing agent, and is also used to make phthalocyanine blue dye.

    Safety information

    1. Swallowing can be harmful and can cause serious eye damage, and inhalation may cause allergy or asthma symptoms or difficulty breathing.

    2. Half lethal dose (LD50) oral-rat -2250 g/kg.

    3. Flammability: It is combustible in open flame and releases toxic gas at high heat.

    FAQ - Technical & Supply Chain

    • Q:

      Does Pyromellitic Dianhydride (PMDA) correspond to the hydrolyzed acid form or the reactive dianhydride?

      A: Pyromellitic Dianhydride (PMDA) is verified under CAS 89-32-7 as the double anhydride form (C10H2O6), distinguishing it from Pyromellitic Acid (PMA) to ensure the anhydrous reactivity required for condensation polymerization into polyimides.
    • Q:

      What is the primary functional advantage of using Pyromellitic Dianhydride (PMDA) in epoxy curing applications?

      A: Pyromellitic Dianhydride (PMDA) is typically applied as a high-performance cross-linking agent in epoxy powder coatings and molding compounds, where it significantly elevates the glass transition temperature (Tg) and chemical resistance of the final cured product.
    Documents

    Documents and Product Support

    For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.

    • COA for batch-based quality reference
    • TDS for key physical and chemical information
    • SDS / MSDS for handling, storage, and safety reference
    • Packing information for sample, trial, and bulk orders
    • Technical communication based on application and specification requirements
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    • Product name and CAS number
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    • Preferred packing form or net weight
    • Destination country or port
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    Storage & Handling

    Packaging, Storage, and Handling Notes

    Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.

    Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.

    Supply Support

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    Product Categories

    Tags:

    Aromatic Anhydride Dianhydride Monomer High Performance Polymer Intermediate Polyimide Monomer

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