DefinitionA <NAPHTHENIC ACID COMPOUND> is a <Compound> mainly consisting of naphthenic acid, an unspecific mixture of several cyclopentyl and cyclohexyl carboxylic acids with molecular weight of 120 to well over 700 au. The main fraction are carboxylic acids with a carbon backbone of 9 to 20 carbons
The naphtha fraction of the crude oil raffination is oxidized and yields Naphthenic acid. The composition differs with the crude oil composition and the conditions during rafination and oxidation.