Corrosion inhibitors

The REWOCOROS® brand comprises a broad range of multifunctional corrosion inhibitors for the formulation of metalworking fluids and non-flammable hydraulic fluids.

These products are being used in soluble oils, semi and full synthetic fluids as well as cleaners. They do not only provide excellent corrosion inhibition but additional benefits such as co-emulsifying or wetting properties or lubricity enhancement. We also offer products that are suitable for the processing of aluminum and other non-ferrous metals.

Our portfolio includes

  • Fatty acid amides
  • Boric acid blends 
  • Carboxylic acid derivatives 
  • Alkanol amides 
  • Phosphoric acid esters

In addition to the conventional test methods like the filter chip test or the bimetallic corrosion coupon test Evonik uses the impedance spectroscopy in order to evaluate customer needs and develop new solutions.



  • REWOCOROS® AL 200 - Excellent corrosion inhibiting performance even on sensitive Al alloys. Outperforms a number of competitive CI and shows, in addition EP properties
  • REWOCOROS® AC 261 - Ready-to-use CI especially for non-ferrous but also for ferrous metals with excellent co-emulsifying properties
  • REWOCOROS® O 3 - Single base component that offers formulators more flexibility to develop customized MWF formulations


Brochure "Corrosion Inhibitors for Metalworking Fluids"

Corrosion inhibitors marketed by Evonik under the trade name REWOCOROS® exhibit excellent corrosion inhibition properties for steel, iron, aluminum, and other metals. Typically REWOCOROS® products are offered as compounds based on fatty acid amides, alkanolamides, boric acid or imidazolines.


Product Overview "Additives for Metalworking and Industrial Fluids"

Overview about our product portfolio of antifoams, emulsifiers, wetting agents and corrosion inhibitors for metalworking and industrial fluids.