Sell Pyromellitic Dianhydride

Pyromellitic Dianhydride
Pyromellitic dianhydride are abbreviated as PDA or PMDA,
Molecular formula : C10H2O6
Molecular weight :218.12
Specifications :
appearance : white or pale yellow, pale grey powder or needle crystal.
melting point : 284-288 C, boiling point : 397~400 C, Than weight : 1.680
Dissolve on two methyl inferior vitriol, two methyl first acyl amine, acetone, methyl second base first ketone, methyl different man base first ketone, sour second ester of second, Do not dissolve it in chloroform, ether and benzene. Suck the tide and hydrolysis into four formic acid of benzene.
Quality index of the products :
Index name First class product Second product Appearance White form powder of needle A little yellow form powder of needle
Purity. Larger than same as99.5% Larger than same as99.3%
Point 284-287 C 284-288 C
neutralization equivalent : 54.5 0.2 54.5 0.2
Used for :
Product this high-temperature backbone of insulating material, use for and produce and gather acyl inferior amine membrane, resin, insulating material, Product this too can use for and produce high- temperature solidification pharmaceutical, disappear all pharmaceutical and plasticizer.
packaging : Two mould other cardboard barrel or two mould outside compound bag, pack every 20 barrel or 25 inside in adopting. Storing should be drenched with rain dampproof, defendly in the course of transporting.
Specifications : first class product or second product
Price Terms : $4800
Quantity : 30a/t
Packaging : 20or25kg