The Karvan-L Group of Companies has been producing natural naphthenic acids for more than 20 years. Our markets include Asian, European and South American countries. In addition to naphthenic acids, we produce technical naphthenic acids, deoiled and non-deoiled acidols, acidol-naphthenic soaps and naphthenic soaps.

It is important to note that demand for naphthenic acids is constantly increasing. To date, annual global demand for naphthenic acids is more than 50,000 tons.

In general, naphthenic acids and their derivatives are used in more than 40 industries.

In form of salts of lead, manganese, cobalt, zinc, iron, aluminum, chromium, and other derivatives, naphthenic acids are used in the production of drying agents, varnishes, and paints. In chemical industry naphthenic acids are also used for manufacturing synthetic products of different kind, such as polyesters.

Some salts of naphthenic acids are used as homogeneous catalysts in oxidation reactions of metals with variable valence.

Naphthenic acids are used to obtain rubber compounds as an intermediate product for the further use.

Naphthenic acids are used to obtain special purpose soaps.

Free naphthenic acids are added to printing inks to enhance fluidity and as an impregnator for wooden sleepers – to protect wood from rotting.

Lead, chromic, cobalt and manganese salts of naphthenic acids are used as antistatic, anti-knock and anti-foaming additives to fuels, including jet fuels, and oils.

Aluminum salts contained in naphthenic acids are used for napalm production.

Acid acids, both free and in the form of various derivatives, have effective fungicidal, insecticidal, bactericidal and anti-decay properties, and therefore are effectively used to fight weeds and pests.

Naphthenic acids are also used for impregnation of trees, sails, burlap, ropes, tarpaulin, fishing gears – items which are frequently exposed to moisture, that attracts bacteria and pests.

Naphthenic acids are used for production of lubricating and emulsifying materials that are applied to cool cutting machines, dye pastes, grease for pressurized machines, demulsifiers.

In radio-electronics, naphthenic acids are used to produce magnetic fluids.


Petroleum acids are related to acid containing compounds with general formula of СnН2n-2О2 : where n=5÷22. These acids represent natural mixture of organic acids with satisfied parameters and are represented in petroleum by acids of almost all classes of alcaic, aromatic hydrocarbons and naphthenes with straight and branched structures.

Composition and physiochemical parameters of petroleum acids extracted from Baku oil completely conform to naphthenic artificial (resin-based) acids. Therefore, they are usually called natural naphthenic acids.

The richest source of naphthenic acids is Baku oil produced in Binagadi, Bibi- Heybat, Romana, Sabunchi, Balakhan and other oil fields.

According to chemical parameters these acids are typical carbide acids. They easily generate different salts during deacidification. Alkaline salts generated from these acids are water-soluble. Industrial method of generation of naphthenic acids are based on above principle. In order to receive ecologically clean, light naphthenic acids cleared off neutral oils and peculiar odor with high, 99,0% – 99,5% of main basic substances, crude naphthenic acids will be distilled by selection of specified particles after special treatment.

Distilled naphthenic acids meet requirements of GOST 13302-77. They can also be produced in accordance with requirements of individual consumers.

Name of the indices DNA-1 DNA-2 DNA-3 DNA-4
Appearance Transparent homogeneous liquid of yellow color Transparent homogeneous liquid of yellow color Darkly brown fluid Transparent single liquid
Fraction of total mass of petroleum acids, % not below 99,0-99,5 99,0-99,5 97,0 95,0
Fraction of total mass of petroleum oil in conversion to organic matters, % not above (Unsap.) 2,5 4,55
Acids number, mg. KON for 1g. Of petroleum acids, within 190-270 270-300 205-210 300-320
Color by Iodine scale, mg. J/ 100sm3 1,0-2,0 1,0-2,0 1,0-2,5
Density, at 20 C g/cubic cm 0,950-0,960 0,950-0,960 0,956


Name of the indices Raw NA-1 Raw NA-2 Raw NA-3
Appearance Darkly brown liquid, viscous substance Darkly brown liquid Darkly brown liquid
Weight fraction of naphthenic acid, % by notless than, not less 45,7 82,4 96,47
Weight fraction of mineral oil % by mass, no more 1,2 13,7 1,35
Acid number, mg. KOH/g 235-250 235-260 235-260
Color by iodine scale, Mg.I/100sm3, not more