Pyromellitic dianhydride is primarily used in the production of matting curing agents for powder coatings, polyimide resins and films, high-temperature resistant electrical insulating varnishes, solid lubricants, epoxy resin curing agents, plasticizers, and cross-linking agents for polyester resins, among others.

Product Performance

It appears as white or yellow block and powdered solid crystals with a specific gravity of 1.68. It is soluble in solvents such as acetone and dimethylacetamide. Product Quality Indicators

Powdered PMDA Melting point: 284~287°C Content ≥99% Neutralization equivalent: 54.5±0.2 Particle size: 99% <150μm

Ultrafine PMDA Melting point: 284~287°C Content ≥99% Neutralization equivalent: 54.5±0.2 Particle size: 99% <10μm

BOPI Grade PMDA Melting point: 284~287°C Content ≥99% Neutralization equivalent: 54.5±0.2 Particle size: <20% below 150μm, <2% above 850μm Packaging: The product is double-packaged, with an inner layer of plastic film and an outer layer of hard cardboard drum. It can be packaged according to customer requirements, with net weights ranging from 25kg to 200kg.

Storage: Must be stored in a dry, well-ventilated area to prevent moisture absorption and deterioration.