Answers to Your Questions about Volatile Corrosion Inhibitors

What is volatile corrosion inhibition?

Volatile corrosion inhibition is a function of a combination of related factors:

  • Chemicals used;
  • Ratios of the chemicals in the formulation;
  • Compatibility;
  • Amount of chemical present (coat weight)

These factors do not work independent of each other, but are synergistic in making an effective VCI. For example, the best VCI formulation in the world will not be able to provide the 3 to 5 molecule layer barrier on the metal surface if the amount of VCI present in the paper or film is too low (the coatweight). The metal will corrode in spite of the presence of a highly effective VCI formulation.

Why does Daubert Cromwell offer so many VCI formulations?

Daubert Cromwell's product line offers different VCI formulations and products to accomplish a broad range of protection requirements. Some companies only offer a "multi-metal" inhibitor. However, to make a multi-metal inhibitor, the formulation must contain a range of corrosion inhibitors some of which are not ferrous inhibitors. Daubert Cromwell does not believe in this "one product fits all" approach. We tailor our formulations to meet the specific needs of each manufacturer and to maximize product performance.

Why does Daubert Cromwell test for compatibility?

When a product is packaged in VCI, it frequently is not completely dry or "bare" of any chemical or chemical residue. In fact, metal parts frequently have oils or chemical residues on their surfaces. These residual chemicals may interact with chemicals in the VCI formulation. The result of incompatible chemical systems can be either attack of the metal or loss of the effectiveness of the corrosion protection.

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Therefore, Daubert Cromwell always recommends testing for the compatibility of our recommended VCI formulation with the metal as it is going to be packaged. This ensures our product is compatible and will meet your expectations.

How long does Daubert Cromwell protect?

VCI will provide complete protection for years.

Daubert Cromwell offers a range of products to accommodate specific packaging requirements, from short term to long term, so you can get the corrosion protection you need.

Where should Daubert Cromwell be used?

Daubert Cromwell products should be used in any metal application where corrosion can occur. This includes in-process, while in storage, and during export over land, air or water. Unprotected metals begin to corrode immediately so even JIT (Just In Time) manufactured parts will benefit from the protection of Daubert Cromwell.

Daubert Cromwell offers the most comprehensive selection of protection in the industry. Whether your metal is steel, iron, zinc, silver, brass, copper, or virtually any other metal, Daubert Cromwell has a paper or film product which will give you total corrosion protection.

How can I purchase Daubert Cromwell products?

Daubert Cromwell sells through a worldwide network of Authorized Users. For the name of your nearest distributor, call +49-89-4522036-0, or send an e-mail to