Mellitic Acid


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Related to Mellitic Acid: palmitic acid, pyromellitic acid

mellitic acid

[mə′lid·ik ′as·əd]
(organic chemistry)
C6(COOH)6 A water-soluble compound forming colorless needles that melt at 287°C.

Mellitic Acid

 

(benzene-hexacarboxylic acid), colorless crystals that are readily soluble in water and alcohol; melting point, 288°C. Mellitic acid was named after the mineral mellite, C6(COO)6Al2. 18H2O, which occurs in brown coal deposits. Its structural formula is

Mellitic acid can be obtained by the oxidation (for example, with nitric acid) of charcoal, coal, soot, or graphite, as well as of hexamethylbenzene. This reaction serves as an interesting confirmation of the presence of benzene rings, discovered by physical methods, in graphite crystals.

References in periodicals archive ?
The charred residues seem to not be stable; subsequent oxidation results in the release of free mellitic acid and other benzenepolycarboxylic acids in subsoil SOM, resonating at 135 and 177 ppm in the [sup.