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.

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.

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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.
Results showed that the pyromellitic acid - nickel film stabilized on the nanocomposite electrode had a very good catalytic activity against the glucose oxidation.