Pyromellitic dianhydride
Product: Pyromellitic dianhydride
Chemical name:Pyromellitic dianhydride
Fomular:C10H2O6
Structural formula:
Hazard level: 6.1
HS code: 2917399090
Appearance:White or yellowish crystals. Exposured to moist air quickly absorbs moisture from the air and hydrolyzes into mesobenzoic acid. Soluble in dimethyl sulfoxide, dimethyl formamide, acetone and other organic solvents, insoluble in ether, chloroform and benzene.
CAS NO: 89-32-7
Items | Specification |
Purity(%) | ≥99.5 |
Melting point(℃) | ≥286 |
Neutralization equivalent | 54.5±0.2 |
Particle size(0.05~1.0mm) | ≥95 |
Usages:
1.Used as material for polyamide, polyimide film, polyimide resin, high temperature-resistant electrical insulating enamel as well as high temperature-resistant coatings;
2.Utilized as the curing agent of epoxy resin, the stabilizer of bakelite and the auxiliary agent of powder coating.
Package:
1.Net weight 20kg in aluminum foil bags filled with nitrogen gas, then wrapped with paper bags;
2.Net weight 25kg or120kg in aluminum foil bags filled with nitrogen gas, then wrapped in cardboard drum; or according to customers’