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Pyromellitic dianhydride

97%

Synonym(s):

Benzene-1,2,4,5-tetracarboxylic dianhydride, PMDA

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About This Item

Empirical Formula (Hill Notation):
C10H2O6
CAS Number:
89-32-7
Molecular Weight:
218.12
Beilstein/REAXYS Number:
213583
EC Number:
201-898-9
MDL number:
MFCD00005005
UNSPSC Code:
12162002
PubChem Substance ID:
24865800
NACRES:
NA.23

assay

97%

form

powder

bp

397-400 °C (lit.)

mp

283-286 °C (lit.)

SMILES string

O=C1OC(=O)c2cc3C(=O)OC(=O)c3cc12

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

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General description

Pyromellitic dianhydride is a dianhydride class of monomers commonly used in the preparation of polyimides polymers which are used in aerospace, electronics, and automotive industries because of their excellent thermal stability, high mechanical strength, and inherent flame resistance. It is also used in the synthesis of thermoplastic polymers such as polyesters and polyethers, as well as plasticizers and epoxy resins. Additionally, PMDA serves as a curing agent for epoxy resins. Epoxy resins are widely used in adhesives, coatings, composites, and electrical insulation materials.

Pyromellitic dianhydride (PMDA) is an acidic anhydride that can be used as a repair agent and as a chain extender in the formation of polyethylene terephthalate (PET) based chain extensions. It is mainly used in the production of thermoplastics and other coating applications.

Application

PMDA can be used as:
  • A monomer to synthesize aromatic polyimides with excellent thermo-mechanical and chemical properties. These polymers find the applications in automotive and electronic industries.
  • A capping agent in the development of siloxane-based hybrid materials for potential usage in organic electronics.
  • A monomer in the preparation and modification of thin film composite membranes, which are used in water purification, gas separation, and biomedical devices.
  • A monomer in the synthesis of pyromellitic diimide-based copolymers as stable cathode active materials for lithium and sodium-ion batteries.

pictograms

Health hazardCorrosion
GHS08,GHS05

signalword

Danger

Hazard Classifications

Eye Dam. 1 - Resp. Sens. 1 - Skin Sens. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

716.0 °F - closed cup

flash_point_c

380 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

Certificates of Analysis (COA)

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Anastasia Anceschi et al.
Nanomaterials (Basel, Switzerland), 10(3) (2020-03-12)
Cyclodextrin (CD)-based polymers are known to efficiently form molecular inclusion complexes with various organic and inorganic guest compounds. In addition, they also have a great potential as metal complexes because deprotonated hydroxyls can strongly bind metal ions under alkaline conditions.
High-refractive-index thin films prepared from aminoalkoxysilane-capped pyromellitic dianhydride-titania hybrid materials
Chang C and Chen W
Journal of Polymer Science Part A: Polymer Chemistry, 39(19), 3419-3427 (2001)
Shadpour Mallakpour et al.
Amino acids, 43(4), 1605-1613 (2012-02-14)
In the present work, several novel optically active nanostructure poly(amide-imide)s (PAI)s were synthesized via step-growth polymerization reaction of chiral diacids based on pyromellitic dianhydride-derived dicarboxylic acids containing different natural amino acids such as L-alanine, S-valine, L-leucine, L-isoleucine, L-methionine, and L-phenylalanine
Ju-Young Choi et al.
Polymers, 11(3) (2019-04-10)
Polyimide films have conventionally been prepared by thermal imidization of poly(amic acid)s (PAAs). Here we report that the improvement of tensile strength while increasing (or maintaining) film flexibility of polyimide films was accomplished by simple microwave (MW) irradiation of the
Yiwu Liu et al.
Polymers, 12(9) (2020-09-12)
A high-barrier polyimide (2,7-CPI) was synthesized through the polymerization of pyromellitic dianhydride (PMDA) and a novel diamine (2,7-CDA) containing carbazole moiety. The synthesized diamine and polyimide were fully characterized by elemental analyses, FTIR and NMR. The 2,7-CPI displays very attractive
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