Pyromellitic Dianhydride at a Glance
Pyromellitic dianhydride, commonly abbreviated PMDA, is an aromatic dianhydride identified by CAS 89-32-7 and EC 201-898-9. Its formula is C10H2O6 and molecular weight is 218.12 g/mol. It is supplied as white crystalline, moisture-sensitive powder with assay ≥99.5%. Supply specification: Assay ≥99.5%. ZXCHEM supplies this material from China in 1 kg bags or 20 / 25 kg lined cartons.
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Standard lead time is approximately 14 days from order confirmation.
Pyromellitic Dianhydride Specifications
Grade-specific supply limits. The agreed specification and batch COA govern delivery.
Commercial Information
Storage & Shipping
Storage Conditions
Keep tightly closed in intact moisture-protective packaging in a cool, dry, well-ventilated area. Avoid moisture, alcohols and strong oxidizing agents.
Packaging Integrity
Inspect carton closures and inner moisture-barrier bags before unloading. Retain product and lot labels, protect from puncture and water, and use dry equipment. Reseal opened packaging promptly.
Packaging
1 kg bags or 20 / 25 kg lined cartons
Handling & Protection
Provide effective local exhaust where powder is handled. Wear chemical-resistant gloves, splash goggles with face protection and suitable protective clothing. Prevent skin contact and dust inhalation; respiratory sensitization requires a workplace assessment and suitable particulate protection where needed.
What Is Pyromellitic Dianhydride?
Pyromellitic dianhydride, commonly abbreviated PMDA, is an aromatic dianhydride identified by CAS 89-32-7 and EC 201-898-9. Its formula is C10H2O6 and molecular weight is 218.12 g/mol. ZXCHEM supplies white crystalline, moisture-sensitive powder with assay ≥99.5%.
The local supply specification controls trimellitic acid, free acid, oil-insoluble matter, colour, residual acetone, halides, particle size and total metals. The melting interval is 286–287.5°C. Particle-size limits specify ≤5% above 500 µm and ≥95% above 80 µm; retain the stated cutoffs when comparing analysis.
PMDA is a monomer for technically controlled polyimide manufacture and can be evaluated in epoxy curing and polymer chain-extension chemistry. Relevant development areas include insulation films, fibres, coatings and adhesives. Select moisture and impurity limits against reaction control and the intended polymer properties; this listing does not guarantee finished-product electrical or flame-retardant performance.
Packing options are 1 kg bags or 20 / 25 kg lined cartons. Preserve closed moisture-protective packaging and use dry transfer equipment. The solid-substance reference is non-dangerous goods for transport, while its eye-damage and respiratory/skin-sensitization hazards require controlled dust handling and appropriate protective equipment.
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Pyromellitic Dianhydride Applications
Polyimide films and fibres
Aromatic dianhydride monomer for qualified polyimide film and fibre synthesis. Assess moisture, stoichiometry, colour and the complete polymer specification.
Electrical-insulation coatings and adhesives
Intermediate for selected polyimide coating, adhesive and electrical-insulation systems. Validate processing conditions and finished-material properties.
Epoxy curing and polymer modification
Evaluate as an anhydride curing agent or polymer-modification intermediate. Establish reaction conditions, dispersion and compatibility through technical trials.
Why Source Pyromellitic Dianhydride from ZXCHEM
One-stop Chemical Sourcing
Source several chemical raw materials through one ZXCHEM contact. We coordinate product selection, quotations and suitable consolidated shipments so you can plan the order with one team.
Dedicated R&Q Laboratory
Discuss specifications, sample results and application questions with our technical team. Our dedicated R&Q laboratory supports product testing and helps clarify material selection.
Experienced Chemical Logistics
ZXCHEM has more than 30 years of experience in dangerous-goods transportation. We coordinate suitable shipments through logistics companies in which we hold equity interests in Qingdao, Shanghai, Guangzhou and Tianjin.
Dedicated Purchasing Support
Your account manager follows the order from quotation and contract signing through shipment and after-sales support. One contact coordinates technical documents, commercial details and delivery updates.
Pyromellitic Dianhydride FAQ
Which Pyromellitic Dianhydride grade should I choose?
Compare Assay ≥99.5% against your process requirements. Check the TDS for assay and impurity limits, then test a sample for compatibility and performance in your process.
Can I request a Pyromellitic Dianhydride sample for testing?
Request a free sample for testing. Tell us the intended PMDA application, preferred grade and the tests you plan to perform, so that we can arrange a suitable evaluation sample and technical information.
How is Pyromellitic Dianhydride packed and shipped?
Standard packing is 1 kg bags or 20 / 25 kg lined cartons. The usual MOQ is 1,000 kg, with a lead time of approximately 14 days from order confirmation. The reference bulk transport classification is Non-dangerous goods.
Which documents are available for Pyromellitic Dianhydride?
The TDS covers supply specifications; the reference SDS covers safety and transport. Both can be downloaded on this page. A batch COA can be provided with supply. Request documents for the grade and physical form you are ordering.
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