mellitic acid

Wiktionary

1. n. A hexacarboxylic acid, benzene hexacarboxylic acid, first discovered in the mineral mellite, which is its aluminium salt.

GNU Webster's 1913

1. adj. a white, crystalline, organic substance, C6(CO2H)6, occurring naturally in combination with aluminium in the mineral mellite, and produced artificially by the oxidation of coal, graphite, etc., and hence called also graphitic acid.