High purity white crystal Pyromellitic dainhydride(PMDA) for polyimide
PRODUCT
Product Name:Pyromellitic dianhydride; 1,2,4,5-Benzenetetracarboxylic dianhydride,PMDA
CAS No.:89-32-7
EINECS No.:201-898-9
Molecular Formula: C10H2O6
Molecular weight:218.12
Supply capacity:100 metric tons/month
STRUCTURAL FORMULA
SOLUBILITY
Soluble in dimethyl sulfoxide, dimethylformamide, acetone, methyl ethyl ketone, methyl
isobutyl ketone, ethyl acetate, insoluble in chloroform, ether and benzene.
TECHNICAL INDICATOR
Item
|
Standard
|
Appearance
|
White crystalline powder
|
Assay
|
≥
99.8%
|
Melting Point
|
286~288
ºC
|
Free acid content
|
≤
0.5%
|
This product is mainly used as a raw material for polyimide, a curing matting agent for
epoxy resin and a crosslinking agent for polyester resin.
Used in the manufacture of polyimide film, polyimide resin, powder coating matting agent,
advanced electrical insulation material.
Used in the manufacture of polyimide resin, high temperature resistant electrical insulating
varnish, PVC plasticizer, synthetic resin crosslinking agent and epoxy resin curing agent,
also used in the preparation of phthalocyanine blue dyes.