| Customization: | Available |
|---|---|
| CAS No.: | 89-32-7 |
| Formula: | C10H2O6 |
|
Still deciding? Get samples of US$ 0/kg
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
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.
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
|
){kind=link}