CAS 89-32-7 Pyromellitic Dianhydride (purified by sublimation)

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Pyromellitic Dianhydride (purified by sublimation)

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Catalog Number

ACM89327

CAS Number

89-32-7

Product Name

Pyromellitic Dianhydride (purified by sublimation)

Structure

Category

Other Material Building Blocks; Monomers; Polymers

Description

DryPowder; DryPowder, PelletsLargeCrystals;WHITE HYGROSCOPIC CRYSTALLINE POWDER WITH CHARACTERISTIC ODOUR.

IUPAC Name

furo[3,4-f][2]benzofuran-1,3,5,7-tetrone

Molecular Weight

218.12g/mol

Molecular Formula

C10H₂O6;C6H2(C2O3)2;C10H₂O6

Canonical SMILES

C1=C2C(=CC3=C1C(=O)OC3=O)C(=O)OC2=O

InChI

InChI=1S/C10H₂O6/c11-7-3-1-4-6(10(14)16-8(4)12)2-5(3)9(13)15-7/h1-2H

InChI Key

ANSXAPJVJOKRDJ-UHFFFAOYSA-N

Boiling Point

397-400 °C;397-400 °C

Melting Point

286 °C;287 °C

Density

1.68 g/cu cm;1.68 g/cm³

Solubility

Soluble in some organic solvents;In water, 130 mg/L @ 25 °C /Estimated/;Solubility in water: reaction

Application

Pyromellitic dianhydride, purified by sublimation, serves a crucial role as a monomer in the fabrication of polyimide polymers, such as Kapton, and various thermoplastics, including polyesters, polyethers, and epoxy resins. Its significance extends to its function as a curing agent for epoxy resins, making it integral in the production of adhesives, coatings, and molding powders. Additionally, it is vital in creating high-performance coatings utilized in numerous applications due to its exceptional thermal, oxidative stability, and mechanical properties. Furthermore, as an intermediate, it contributes to the development of polyimide-based materials used in printed circuit boards, tape automated bonding, and magnetic wire insulation. However, it is important to note that pyromellitic dianhydride and similar acid anhydrides can cause respiratory irritation and are recognized as immediate-type sensitizers, with some linked to occupational asthma.

Color/Form

White powder

Complexity

349

Covalently-Bonded Unit Count

EC Number

201-898-9

Exact Mass

217.985138g/mol

Formal Charge

Heavy Atom Count

ICSC Number

1375

Log P

log Kow = 2.14 /Estimated/

MeSH Entry Terms

1,2,4,5-benzenetetracarboxylic anhydride;1,2,4,5-benzenetetracarboxylic dianhydride;1-PMDA;pyromellitic acid dianhydride;pyromellitic dianhydride

Monoisotopic Mass

217.985138g/mol

NSC Number

4798

Other Experimental

Henry's Law constant = 7.5X10-9 atm-cu m/mole @ 25 °C /Estimated/;Hydroxyl radical reaction rate constant = 2.9X10-13 cu cm/molecule-sec @ 25 °C /Estimated/

Rotatable Bond Count

RTECS Number

DB9300000

UNII

2Z22T30QZQ

Vapor Pressure

4.8X10-6 mm Hg @ 25 °C /Estimated/

XLogP3

0.7

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