Metal naphthenates from Strem Chemicals are used for a variety of applications

Metal naphthenates from Strem Chemicals are used for a variety of applications

The metal naphthenate combination occurs naturally with mixtures of cycloaliphatic carboxylic acid moities (primarily cyclopentyl and cyclohexyl) with varying structures (10 to 16 carbons long) isolated from crude oil.  Metal naphthenates are salts of these naphthenic acids1  having the formula M(Naphthenate)2.2  They can be found naturally from the combination of naphthenic acids in crude oil with metal ions contained in water.

These naphthenate salts are soluble in certain organic carrier liquids and are an effective source of metal ions in organic media.  Traditional applications2 include use in paint drying, wood treatment, anti-fouling agents, detergents, insecticides, fungicides, wetting agents, lubricants, surfactants, and corrosion inhibitors.

Listed below are various metal naphthenates that Strem has available for purchase in the UK, we have many in stock, so phone us for advice

Item Number Metal % Metal Content Carrier Liquid
93-2027 Calcium 4 35% in mineral spirits
24-2427 Chromium 2-2.5 30-40% in heavy naphtha
93-2424 Chromium 2 30% in mineral spirits
93-2710 Cobalt 6 53% in mineral spirits
29-6750 Copper 8 77% in mineral spirits
93-2613 Iron 6 40% in mineral spirits
26-2600 Iron 12 80% in mineral spirits
93-1236 Magnesium 3.5-8.0
93-2516 Manganese 6 56% in mineral spirits
93-2829 Nickel 6-8 60% in toluene
93-6206 Samarium 8-10
23-4400 Vanadium 2.8-3.2 35% in naphthenic acid
93-3908 Yttrium 7-13 60% in toluene
93-3037 Zinc 10 65% in mineral spirits

These compounds are also related to a source of metal soaps: metal 2-ethyhexanoates  



  1.  Kirk‐Othmer Encyclopedia of chemical technology, 2000 (
  2.  For example see; Performance of copper naphthenate and its analogs as ground contact wood preservatives, Bioresource Technology, 2005, 96(10), 1135.

Example of cyclopentyl and cyclohexyl mixture comprising
Metal Naphthenate (n = 0-5 variable number of carbons).
(For different metals available see table)