Corrosion is a natural process, which converts a refined metal to a more chemically-stable corroded form, such as its oxide, chloride, hydroxide, or sulphide. It is the gradual destruction of materials (usually metals) by chemical and/or electrochemical reaction with their environment. In the most common use of the word, this means electrochemical oxidation of metal in reaction with an oxidant such as oxygen or sulphur. Rusting, the formation of iron oxides, is a well-known example of electrochemical corrosion. This type of damage typically produces oxide(s) or salt(s) of the original metal, and results in a distinctive orange colouration. Corrosion can also occur in materials other than metals, such as ceramics or polymers, although in this context, the term "degradation" is more common. Corrosion degrades the useful properties of materials and structures including strength, appearance and permeability to liquids.

• Excellent corrosion & deposition control – Keeps heat transfer surfaces clean
• Good resistance to MB activity
• Compatible with MEG
• pH buffered