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Product name: Pyromellitic Dianhydride (PMDA)
CAS No: 89-32-7
Chemical Molecular: C10H2O6
Molecular Weight: 218.12
Properties: It is white to slight yellow crystalline powder, melting point: 284-2880, Boiling point: 397-4000, specific gravity: 1.68 g/cm3. It is easily soluble in dimethyl sulfoxide, dimethylformamide, acetone, methyl isobutyl ketone, acetic ether, but not soluble in chloroform, diethyl ether and benzene. When it is placed in the moist air, moisture would be quickly absorbed and it is hydrolyzed into 1,2,4,5-benzenetetracarboxylic acid.
Appearance White to slight yellow crystalline powder
Purity, % 99.0 min.
Neutralization equivalent 54.510.2
Melting point, 0 284-288
Mainly used as monomer of heat -resisting resins Such as polyamide, polyimidazole and pyrrol ketone etc. , intermediate of matting hardener for powder coatings, medical intermediate, curing agent for epoxy resins.
The chemical can improve the chemical-medicine-resistant performance of the final products greatly, and toxicity gas will not be released when production.
Packing: 25kg / drum, lined with aluminum foil.
Transport and Storage: Store in cool, dry and ventilated place. Be careful when transport.