1,2,4,5-BENZENE- TETRACARBOXYLIC ANHYDRIDE 89-32-7 C10H2O6 PMDA

Synonyms

Pyromellitic dianhydride; Benzene-1,2,4,5-tetracarboxylic dianhydride; PMDA

CAS

89-32-7

Molecular Formula

C10H2O6

purity

＞99.5%

Melting point

286.2-287.0℃

Acetone residue

≤1500 PPM

acidity

≤0.5%

granularity

custom made

EINECS

201-898-9

appearance

White or off-white crystal

Product nature

This product is white or off-white crystal, soluble in acetone, ethyl acetate, dimethylacetamide, insoluble in luram ether.

Dangerous goods grade

Non-dangerous goods

Product Usage

Polyimide film, polyimide resin, high temperature resistant insulating varnish, PVC plasticizer, synthetic resin crosslinking agent, epoxy resin curing agent, powder coating matting agent, etc.
Known as the "golden film" widely used in electronics, electrical, aerospace and atomic energy sectors

Storage note

The product must be placed in a cool, dry, well ventilated place with an open flame or potential source of ignition. She will slowly hydrolyze to pyromellitic acid when exposed to the air in the supermarket. For this reason, the package should be sealed when pyromellitic dianhydride is not practical.