JAMMARK INTERNATIONAL TRADINGE(ZIBO) CO., LTD. is one of the most professional manufacturers and suppliers of pyromellitic dianhydride crude in China. If you're going to buy high quality pyromellitic dianhydride crude made in China, welcome to get more information from our factory. For price consultation, contact us.
Pyromellitic Dianhydride Crude (PMDA Crude)
Pyromellitic Dianhydride Crude, commonly referred to as PMDA Crude, is an important intermediate used in the production
of purified PMDA and a variety of high-performance polymer and chemical materials.
Product Technical Indicator
|
Pyromellitic dianhydride crude Item |
Standard |
|
Appearance |
Off-White or light yellow crystal |
|
Assay |
≥98% |
|
Melting Point |
283~286℃ |
|
Neutralization equivalent |
54.5±0.2 |

Applications of Pyromellitic Dianhydride Crude
Crude PMDA is mainly used as a raw material for:
- Production of high-purity PMDA via recrystallization or thermal purification
- Polyimide and polyamic acid synthesis (customers refine before use)
- Engineering plastics and heat-resistant polymer materials
- Specialty chemicals and aromatic intermediates
- Coatings, adhesives, and insulation materials
Manufacturers who require consistent supply for bulk production often choose crude PMDA as a cost-effective starting material.
Why Choose Us as Your PMDA Crude Supplier?
- Professional PMDA manufacturer in China with stable upstream raw materials
- Consistent batch-to-batch performance
- Support for REACH-related documents, COA, and technical specifications
- Competitive pricing for large-volume contracts
- Fast shipment and export-compliant packaging

FAQ for Buyers
Q1: What is the main difference between PMDA Crude and purified PMDA?
Purified PMDA has ≥99–99.5% purity, while crude PMDA contains controlled impurities and is intended for customers who perform
their own purification.
Q2: Can crude PMDA be used directly for polyimide production?
Not recommended. Most manufacturers refine crude PMDA first to achieve the required purity for polymer-grade applications.
For more information about pyromellitic dianhydride, please click the button below to contact us.
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