Chemical Formula C10H2O6

Molecular Weight 218.12

CAS Number:  89-32-7     
EINECS Number:   201-898-9

Other Names: 1,2,4,5-Benzenetetracarboxylic Dianhydride;
Benzene-1,2

Appearance

 White Crystals

Assay (HPLC) wt% 99.5 min.

TMA(HPLC) wt% 0.2 max.

Free acid % (Titration Method) wt% 0.5 max.

Melting Point (Calorimetric Method) 286.0~287.5

Particle Size DistributionAbove 500 um through 80 um

 

Packaging and Storage :PMDA is available in 135 kg fibre drum with aluminum foil bag.

Under request other forms of packaging can be available.It must be stored for a limited period, away from open flames or other potential ignition sources, in cool, dry, well-ventilated place. It will hydrolyse slowly to PMA when exposed to air moisture. For this reason, all containers must be tightly sealed when not in use.