Pyromellitic Dianhydride (PMDA) used in making Polyimide resins, eletricity insulated paint forhigh temperature, PVC Plasticizer, synthetic resin Crosslinker,making Phthalocyanine
Character white farina, white or light yellow rime
Melting point 286(284---287)
Boiling point 384(397---400
Comparatively density 1.680
Acid number 1026---1029
Saponification number 1026---1029