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Cortec M 235

Cortec M 235

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Cortec M 235 is an effective corrosion inhibitor for copper items, copper-based alloys, & other muntz metals.

M 235 works by interacting with copper oxides to generate a robust, impermeable polymeric compound. This complicated substance forms a thin film or layer on metal surfaces, acting as both a mechanical & electrochemical shield against acidic corrosion. This protective layer is highly thermal and oxidatively stable and cannot be easily removed.

M 235 binds yellow metallic ions in the solution, inhibiting the galvanic breakdown of other metals when in contact with copper. M 235 is soluble in some organic and water systems.

Suggested Uses

M 235 has a wide range of uses for protecting yellow metals.

  • Direct cleaning for brass sheets, rolled and coiled coppers.
  • Circulating air cooling systems such as Air conditioning and cooling towers,
  • Functional fluids include specialist lubricants, metalworking fluids, hydraulics, and automotive coolants,
  • Used box board and wrapping paper to protect brass and copper during shipping & storage.
  • Use corrosion-resistant coatings like waxes and lacquers.
  • Cleansers include detergents, soaps, and powerful acid/alkali cleansers.
  • Fabricated copper and brass goods.
  • Sculptures, artefacts, and decorative things.


When M 235 is added to liquids at concentrations ranging from 0.1 to 2.0%, the pH is nearly neutral. Liquids can be non-aqueous or aqueous. It can be utilised as a vapour or solid. For particular recommendations, reach out to a Cortec specialist.


M 235 packaging options are bulk and fiber drums. Sizes are in 5 pounds or 2.3 kg, 50 pounds or 23 kg, 100 pounds or 45 kg. 

Product Specifications (.PDF)

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