Address: No.1687, Zhennan Road, Shanghai, P.R.China
Tel: +86-21-58333929
+86-13061646010
Fax: +86-21-61116233
E-MAIL: sales@shldchem.com
Website: www.shldchem.com
Pyromellitic dianhydride (PMDA )
Product Name:
Pyromellitic dianhydride (PMDA )
Molecular Formula:
C10H2O6
CAS No.:
89-32-7
Synonyms: 1,2,3,5-benzenetetracarboxylic anhydride; 1,2,4,5-Benzenetetracarboxylic anhydride; 1,2,4,5-Benzenetetracarboxylic Dianhydride; 1H,3H-Benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone; PMDA.
CAS No.: 89-32-7; EINECS No.: 201-898-9
Chemical Formula: C10H2O6; Molecular Weight: 218.12
Chemical Structure:
Specification:
Appearance: Slightly white crystal
Purity: ≥99.5%
M.P.: 284~288 ℃
Neutralization Equivalent: 54.5±0.2
Pyromellitic monoanhydride (PMMA) & PyromelliticAcid (PMA): ≤0.5%
Each Metal ( Na, K, Ca, Fe, Cu, Al, Si): ≤1PPM
Packaging: 20kgs/box or 25kgs / drum, 135kgs/drum with bag inside or per customer’s request.
Application: To produce polyimide and Bioriented polyimide sheets, gloss retaining and curing agent for powder coating, high temperature-resistant electrical insulating enamel, solid lubricant, solidifying of epoxy resin, plasticizer and cross-linking agents for polyester resins, etc.
Storage: must be stored for a limited period, away from open flames or other potential ignition sources, in cool dry, well-ventilated place. It will hydrolyze slowly to PMA when exposed to air moisture. For this reason, all containers must be tightly sealed when not in use.
| |||||