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Pyromellitic Dianhydride (PMDA)

Pyromellitic Dianhydride (PMDA) is a white powder. It can be used as a repair agent and as a chain extender . It is mainly used in the production of thermoplastics and other coating applications.
  • 1,2,4,5-Benzenetetracarboxylic anhydride
  • White Power
  • 89-32-7
  • C10H2O6
  • 218.12
  • 201-898-9
  • 380℃
Availability:

SPECIFICATION

PYROMELLITIC DIANHYDRIDE SPECIFICATION


Test Description

Specification

Result

Purity

≥99.5%

99.96%

Residual Acetone

≤1500 ppm

974 ppm

Melting Point

286-287.5℃

286.1-287.1℃

Color

White

White

Acid(PMA)

≤0.5%

0.11%

Impurity Content

≤30 ppm

20 ppm

Particle Size

≤ 150-600μm(≥90%)

95%


COA - PMDA.pdf     MSDS  PMDA.pdf

DESCRIPTION

PYROMELLITIC DIANHYDRIDE DESCRIPTION


Pyromellitic Dianhydride (PMDA) is a white powder, soluble in some organic solvents; hydrolyzes to the acid when exposed to moisture. 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 Production Methods:


Pyromellitic Dianhydride is prepared by gas-phase oxidation of 1,2,4,5-tetramethylbenzene (or related tetrasubstituted benzene derivatives). An idealized equation is:

C6H2(CH3)4 + 6 O2 → C6H2(C2O3)2 + 6 H2O

In the laboratory, it can be prepared by dehydration of pyromellitic acid using acetic anhydride.


STORAGE

Pyromellitic Dianhydride Storage:


Tightly closed. Dry. Keep locked up or in an area accessible only to qualified or authorized persons.


Pyromellitic Dianhydride Package:


25kgs cardboard drum


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






APPLICATION

Pyromellitic Dianhydride application:


Pyromellitic Dianhydride (PMDA) has been used extensively as an important monomer in the preparation of a variety of thermoplastics such as polyesters, polycarbonates, polyethers polyethers, plasticizersplasticizers, expoxy resins, etc. Moreover, it is also useful in the preparation of high performance coatings that have been widely employed in many fields in our daily life beacuase of its excellent thermal, oxidative stability and excellent mechanical properties.



FAQ

Q1: May I get sample?

A1: Free sample is available, you only need to pay freight.


Q2: How long does it take for me to get sample?

A2: Usually it will cost about 5 days after delivery.


Q3: How can I place an order?

A3: You can contact us about your order details  by E-mail, WhatsApp, Skype, etc.


Q4: How can you guarantee your products are qualified?

A4: We will test the goods and issue COA before delivery

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