412287
Pyromellitic dianhydride
97%
Sinónimos:
Benzene-1,2,4,5-tetracarboxylic dianhydride, PMDA
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About This Item
Fórmula empírica (notación de Hill):
C10H2O6
Número de CAS:
Peso molecular:
218.12
Beilstein/REAXYS Number:
213583
EC Number:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
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.
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.
signalword
Danger
hcodes
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
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