The CAS number of pyromellitic dianhydride is 89-32-7.
It is a key monomer for the synthesis of polyimide, high-performance resins and modifiers. Its structure consists of four carboxyl groups on the benzene ring dehydrated to form a dianhydride ring. It has high stability and is used in the fields of aerospace, electronic packaging and high-temperature materials.
In the process of international trade, the CAS number serves as the identity of PMDA. It means:
- Avoid classification disputes during customs declarations
- Hazardous chemicals are transported in compliance with international maritime transport regulations.
- COA, safety data sheets maintain global consistency
At JAMMARK INTERNATIONAL TRADINGE, when pyromellitic dianhydride printed with CAS: 89-32-7 is shipped, we also strictly follow the international norms for chemical exports. It is the customer's customs clearance, and the production plan will not be affected by unexpected delays.
We also believe that true professionalism is not only reflected in price and quality, but also in these details. When you choose Anquan Chemical, you will not only get high-quality PMDA products, but also a reliable partner who specializes in exporting chemicals.
