Pyromellitic Anhydride (PMDA) is a raw material for heat resistant polyimide resins, films and coatings. PMDA is mainly applied as an intermediate for polyimide films as well as polyimide based composite materials in flexible printed circuit boards, tape automated bonding, magnetic wire insulation, and other
high performance applications. It is also used as a curing agent for epoxy resins used in molding powders (to produce components for seal rings, thrust washers, special gaskets or thermal and electrical insulators), adhesives and coatings.
Two different grades of PMDA are available:
PMDA CA
PMDA ultrafine grade
Pyromellitic Dianhydride (PMDA) |
| Formula |
C10H2O6 |
| Appearance |
White Crystals |
| Molecular weight |
218.12 |
| CAS RN |
89-32-7 |
| Minimum assay |
99.00% |
| Minimum stability |
1 year |
| Melting point ca. |
284 |
| Boilinng point ca. |
397 - 400 |
| EU labeling |
Xn harmful; R41, R42/43 |
| Packaging |
Fiber drum with PE bag |
| Transport information |
Not restricted |
Lonza recently successfully started operations of it’s new PMDA plant in Nanjing to serve its customers.
