Product Description
Brief introduction
Pyromellitic dianhydride (PMDA), pure products are white or slightly yellow crystals. Exposure to moist air will quickly absorb moisture from the air and hydrolyzed into Pyromellitic Acid. Dissolved in dimethyl sulfoxide, dimethylformamide, acetone other organic solvents, insoluble in ether, chloroform, and benzene. Mainly used as raw material for polyimide, and crosslinking agent for the manufacture of epoxy curing agents and the polyester resin extinction.
Pyromellitic acid(PMA), also known as 1,2,4,5-benzenetetracarboxylicacid, white to yellowish powdery crystal, is mainly used in the synthesis of polyimide, octyl pyromellitic, etc., is the main raw material for the production of matting curing agent.
Product Name: Pyromellitic Dianhydride / PMDA
CAS: 89-32-7
MW: 218.12
MF: C10H2O6
Appearance: white Crystal powder
Purity: 99.5% &98%
Specification
|
Item
|
Top Grade
|
First Grade
|
|
Content (w, %)
|
≥99.5
|
≥98.0
|
|
CAS NO
|
89-32-7
|
89-32-7
|
|
Appearance
|
White crystal powder
|
White crystal powder
|
|
Melting Point (ºC)
|
285-288
|
283-286
|
|
Neutralization Equivalent
|
54.5±0.2
|
54.5±0.2
|
|
Specific Gravity
|
1.680
|
1.680
|
Application
1. The main raw materials of engineering plastics and insulating films, can be used as curing agents, stabilizer,s and synthetic raw materials of dyes.
2. Used for manufacturing resin, high temperature resistant electrical insulating paint, and PVC plasticizer.
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