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Pyromellitic Dianhydride CAS 89-32-7

The English name for phthalic anhydride is Pyromellitic Dianhydride (abbreviated as PMDA), mainly used for synthesizing polyimides. Due to its excellent chemical properties such as ultra-high heat resistance, acid and alkali resistance, outstanding mechanical and electrical properties, and dimensional stability, polyimides are widely used in high-tech fields such as aviation, aerospace, microelectronics, and atomic energy, which require strict material performance.


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Model:
89-32-7
Brand:
bosschemical
Code:
89-32-7

Product Description

Pyromellitic Dianhydride Basic information
Product Name:	Pyromellitic Dianhydride
CAS:	89-32-7
MF:	C10H2O6
MW:	218.12
EINECS:	201-898-9
Mol File:	89-32-7.mol
Pyromellitic Dianhydride Chemical Properties
Melting point	283-286 °C(lit.)
Boiling point	397-400 °C(lit.)
density	1,68 g/cm3
bulk density	400-600kg/m3
vapor pressure	0Pa at 25℃
refractive index	1.6000 (estimate)
Fp	380 °C
storage temp.	2-30°C
solubility	Soluble in dimethyl sulfoxide, acetone, chloroform, ethyl ether, n-hexane and benzene.
form	Fine Powder
pka	5.45[at 20 ℃]
color	White to pale yellow
Water Solubility	decomposes
Sensitive	Moisture Sensitive
BRN	213583
Henry's Law Constant	1.3×103 mol/(m3Pa) at 25℃, HSDB (2015)
InChI	1S/C10H2O6/c11-7-3-1-4-6(10(14)16-8(4)12)2-5(3)9(13)15-7/h1-2H
InChIKey	ANSXAPJVJOKRDJ-UHFFFAOYSA-N
SMILES	O=C1OC(=O)c2cc3C(=O)OC(=O)c3cc12
LogP	-2.03 at 21.5℃
CAS DataBase Reference	89-32-7(CAS DataBase Reference)
NIST Chemistry Reference	1,2,4,5-Benzenetetracarboxylic anhydride(89-32-7)
EPA Substance Registry System	1H,3H-Benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone (89-32-7)

Item	Specification	Result
Acetone residue	≤1500ppm	757ppm
Free acid	≤0.5%	0.11%
Appearance	White crystal	White crystal
Melting point	286-288°C	286.7°C
Purity	≥99.5%	99.93%