Pyromellitic Dianhydride (PMDA), widely known as Pyromellitic Dianhydride and identified by CAS number 89-32-7, is a crucial organic chemical intermediate in the field of advanced material science. Characterized by its robust aromatic dianhydride structure, PMDA typically presents as a white to pale yellow crystalline powder or block crystal. Due to its exceptional thermal stability, high reactivity, and versatile molecular architecture, it serves as a foundational monomer and indispensable additive for synthesizing high-performance polymers, specialty chemicals, and functional materials across various demanding industries.
ⅠComprehensive Physical and Chemical Properties
Understanding the precise physical characteristics of PMDA is essential for optimizing manufacturing processes and ensuring superior product quality. Our premium-grade PMDA is engineered to meet stringent industrial standards:
Appearance: White to light yellow powder or block crystal.
Purity: High-purity grades available, typically ≥99.5% minimum content.
Melting Point: 283°C – 287°C, reflecting its robust thermal stability.
Boiling Point: Approximately 397°C – 400°C.
Density: ~1.68 g/cm³.
Solubility: Readily soluble in polar aprotic organic solvents such as acetone, dimethylformamide (DMF), dimethylacetamide (DMAc), and dimethyl sulfoxide (DMSO). It is practically insoluble in water, though it can hydrolyze into pyromellitic acid when exposed to humid environments.
Ⅱ Key Industrial Applications
PMDA’s unique chemical reactivity makes it a highly sought-after intermediate across multiple high-tech sectors:
Polyimide (PI) Synthesis: PMDA is the primary raw material for manufacturing premium polyimide films, resins, and engineering plastics. These advanced materials are highly prized in the electronics industry for their outstanding thermal resistance, excellent electrical insulation, low thermal expansion, and mechanical strength. They are widely used in flexible printed circuits, wire insulation, and semiconductor manufacturing.
Epoxy Resin Curing Agent: Acting as a highly effective curing agent, PMDA creates densely cross-linked structures that significantly enhance the thermal, chemical, and mechanical resistance of epoxy systems. It is extensively utilized in high-grade adhesives, structural coatings, and electrical insulation molding compounds.
Polymer Modification & Additives: In the plastics industry, PMDA functions as a chain extender for polymers like PET (polyethylene terephthalate), improving heat resistance for applications such as food packaging. It also serves as a cross-linking agent for polyester resins, a matting agent in powder coatings, and a plasticizer for PVC.
Dye & Pigment Production: PMDA is a vital intermediate in the synthesis of phthalocyanine blue dyes. Its chemical structure allows for the formation of stable, highly conjugated systems, providing vibrant and durable coloration for inks, coatings, and plastics.
Specialty Chemicals: Beyond polymers, Premium pyromellitic dianhydride PMDA is utilized in the development of novel surfactants, emulsifiers with biological barrier properties, metal corrosion inhibitors, and even as a stabilizing active material in lithium-ion and sodium-ion batteries.
Ⅲ Standard Packaging and Safe Handling
To maintain the high purity and prevent moisture absorption of PMDA, we employ industry-standard packaging and strict storage protocols:
Packaging: Standard export packaging consists of 20 kg corrugated case or fiber drums, with an inner lining of a PE (polyethylene) bag. For international export, vacuum-sealed bags are utilized to ensure maximum moisture protection. Custom packaging can be arranged based on specific client requirements.
Storage & Transportation: PMDA must be stored in a cool, dry, and well-ventilated warehouse, strictly protected from moisture and kept away from heat sources and incompatible materials (such as strong bases or amines).
Ⅳ Ready Stock & Reliable Supply
We understand that consistent material purity and timely delivery are critical for your production lines. We currently have premium-grade PMDA (CAS 89-32-7) available in stock, ready for immediate dispatch. Whether you require small-scale samples for R&D testing or bulk quantities for mass production, our robust supply chain guarantees fast turnaround times, competitive pricing, and comprehensive technical support, including TDS and COA documentation.
Ⅴ Global Market
Our high-purity PMDA is strategically positioned to serve diverse international markets, driving innovation across key regions. In the Asia-Pacific, we are a trusted supplier to the booming electronics and flexible circuit hubs in China, Japan, and South Korea, supporting the rapid miniaturization of consumer devices. For our partners in North America and Europe, our PMDA meets the rigorous standards of the automotive sectors, enabling the production of lightweight, high-temperature resistant components for next-generation vehicles. Furthermore, we cater to the expanding chemical manufacturing landscape in the Middle East and Latin America, providing reliable raw materials for industrial coatings and adhesives. Regardless of your geographic location or industry focus, our streamlined global logistics and dedicated technical support ensure that you receive consistent, premium-grade PMDA exactly when you need it. Join our growing network of international clients and empower your business with superior materials.
Contact Us Today
Partner with a reliable supplier committed to quality and efficiency. Please reach out to our sales team for the premium pyromellitic dianhydride pricing, detailed specifications, or to place your bulk order. Let our high-purity PMDA drive your next material innovation!
