Pyromellitic Dianhydride (Pmda) By Huangshan Deping Chemical Co., Ltd.

These Pyromellitic Dianhydride (PMDA) is a chief material for high temperature insulant, used mainly for the producing of polyimide resin, thin film, and insulating paint. It is also a high temperature Curing Agent and plasticizer. Some kinds of Curing Agents of powder coating are made from it.
Chemical name : 1,2,4,5-Benzene Tetracarboxylic Dianhydride
Product Code : PMDA
Chemical structure
Molecular formula : C10H2O6
CAS No.89-32-7
EINECS No. : 201-898-9
Molecular Weight: 218.12
Density1.68g/cm3

Technical data:
Appearance : White or Light Yellow
Melting: 282-288a
Neutralization Equivalent : 54.5A 0.2
Boiling Point : 397-400a
Content: a Y99.5 %

Application:
Used as Making polyimide film, polyimide resin, matt hardener/curing agent of powder coating, insulating material, phenolics stabilizer, corrosion inhibitor, electro-fax toner.