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Potassium Tripolyphosphate

Last updated: July 19, 2024

What Does Potassium Tripolyphosphate Mean?

Potassium tripolyphosphate (KTPP) is a chemical substance with the molecular formula K5O10P3. It is hygroscopic in nature and used to form protective films on metal surfaces to enhance corrosion resistance.

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Corrosionpedia Explains Potassium Tripolyphosphate

Some important physical properties of potassium tripolyphosphate related to corrosion prevention are:

  • Water resistance that prevents corrosion-causing moisture penetration
  • Occurs in a powdered form that increases the ease of dispersion and application
  • Soluble in water, giving it and increased alkalinity and pH

50% potassium tripolyphosphate (KTPP) is mainly used in the following industrial applications:

  • Metal surface treatment
  • Water soluble fertilizer production
  • Softening of hard water
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