JAMMARK INTERNATIONAL TRADINGE(ZIBO) CO., LTD. is one of the most professional manufacturers and suppliers of pyromellitic acid hydrate in China. If you're going to buy high quality pyromellitic acid hydrate made in China, welcome to get more information from our factory. For price consultation, contact us.
What is pyromellitic acid hydrate?
- Pyromellitic acid hydrate is a crystal water-containing form of pyromellitic acid..
- It is closely related to PMDA and is produced during the hydrolysis of PMDA.
- Its molecular formula is C₁₀H₆O₈, and its CAS number is 89-05-4.
- It usually exists in the form of white to slightly yellow powdery crystals, has sublimability, is easily soluble in alcohol, and is slightly soluble in water and ether.
Difference Between Pyromellitic Acid Hydrate and PMDA
| Item | Pyromellitic Acid Hydrate | PMDA |
|---|
| Chemical form | Acid hydrate | Dianhydride |
| Water content | Contains crystal water | Anhydrous |
| Application | Resin modifier | Polyimide monomer |
| Production route | Hydrolysis | Oxidation of Durene |
Manufacturing process and sources of pyromellitic acid hydrate
- The aqueous product of pyromellitic acid is not synthesized directly, but is produced through the hydrolysis reaction of pyromellitic acid dianhydride.
- Integrated production line of PMDA and Pyromellitic Acid
Key Applications in Industry
1. Epoxy Resin Curing Agent
- Increase Tg
- Improve thermal stability
- Improve electrical performance
- for PCB laminates
2. Polyimide Production
- For PMDA-based polyimide
- High temperature resistance 300°C+
- Aerospace and electronic materials
3. Powder Coatings and Specialty Resins
Used to enhance hardness, chemical resistance and heat resistance.
Why Choose JAMMARK INTERNATIONAL TRADINGE?
Professional PMDA manufacturer, raw material control
ISO certification, direct supply from factory
Long-term overseas export experience, like Europe, Asia, etc.
FAQ
Q1: What is typical purity?
Pyromellitic Acid Hydrate typically has a purity of ≥99.0%. Moisture content and free acid levels are strictly controlled to ensure stable performance in resin and polymer applications. Detailed technical specifications and batch analysis data are available upon request.
Q2: How is it packed for export?
Pyromellitic acid hydrate is usually shipped in 25kg woven bags to ensure moisture protection during transportation.
Customized packaging options are available as per customer requirements.
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