Pyromellitic Acid

pyromellitic acid

[‚pī·rō·mə′lid·ik ′as·əd]
(organic chemistry)
C6H2(COOH)4 A white powder with a melting point of 257-265°C; used as an intermediate for polyesters and polyamides. Abbreviated PMA.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Pyromellitic Acid


(1,2,4,5-benzenetetracarboxylic acid), colorless crystals. Melting point, 272°C. Moderately soluble in water, freely soluble in alcohol, and poorly soluble in ether.

Pyromellitic acid readily converts into an anhydride upon heating; hydrolysis of the anhydride, which is formed during dry distillation of mellitic acid, is used to obtain pyromellitic acid. The acid and anhydride are used in the preparation of thermally stable polymers, or polypyromellitimides.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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Taking into consideration the chemical properties of pyromellitic acid such as flexibility and the ability to form hydrogen bond, the researchers produced a stable modified electrode for the electrocatalytic oxidation of glucose by electrolyte deposition of pyromellitic acid - nickel composition on the surface of Au-Pt nanocomposite glass carbon electrode in an alkaline solution.
The capillary electrophoresis method recently under examination for the separation of poisonous anions in food consists of a 1.6-mM triethanolamine buffer (pH 7.7) containing 0.75 mM hexamethonium hydroxide and 2.25 mM pyromellitic acid (Harrold et al.