Fine Chemical Intermediate Raw Material Pyromllitic Acid/Pma

Model NO.: PMA Environmental Protection: Yes Appearance: Powder CAS: 89-05-4 Specification: 99% Certification: REACH Function: Intermediate Color: White Trademark: Y&R Origin: China It's white,crystal powder, specific weight is 1.79; slightly soluble in water and ether; soluble in ethyl alcohol; at above melting point, it would lose water to form pyromellitic dianhydride, it is also capable of subliming and slowly absorbing moisture from atmosphere.
Applications:organic synthetic intermediate for producing polyesterm polyimide, polyimide resin, and the deluster for powder paints, plasticizer for tetraoctyl pyromellitate,dull curing agent of powder coating as main Raw Material.
 

Appearance	White crystal powder
Melting point ºC≥	282
Purity%≥	99.0
Volatiles %≤	0.5
Acid value ≥	876
Ash ≤	400ppm

 

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