MonoPotassium Phosphate MKP

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SizePrice ex VATPrice inc VAT
1Kg £13.33 £15.99
5Kg £19.58 £23.49
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Mono Potassium Phosphate


Technical grade

Monopotassium phosphate (MKP) with formula KH2PO4, is manufactured from phosphoric acid and potassium carbonate. It is a water soluble, hygroscopic, white, odourless powder. It is used as a buffering agent, fertiliser and as a fungicide.

PLEASE NOTE: This product is not for human or animal consumption.


Uses for Monopotassium phosphate

  • Agricultural chemicals (non-pesticidal)
  • Corrosion inhibitors and anti-scaling agents
  • Intermediates
  • Paint additives and coating additives not described by other categories
  • Plating agents and surface treating agents
  • Adhesives and Sealants
  • Agricultural Products (non-pesticidal)
  • Building/Construction Materials
  • Lawn and Garden Care Products
  • Paints and Coatings
  • Photographic Supplies, Film, and Photochemicals

  • Properties of Monopotassium phosphate: 

    • CAS No: 7778-77-0
    • EINECS No: 231-913-4
    • Other Names: Potassium dihydrogen phosphate; MKP; Potassium phosphate monobasic;; Phosphoric acid, monopotassium salt
    • Appearance: White powder
    • Formula: KH2PO4
    • Density: 2.338 g/cm3
    • Molar Mass: 136 g mol/1
    • Melting point: 252 oC
    • Solubility: soluble in water 22.6 g/L @20C - 83.5 g/L @90C
    • pH (1%): 4.5

    Health & Safety

    R-phrase(s): R36 Irritating to eyes

    S-phrase(s): S24/25 Avoid contact with eyes and skin


    Click here to view MSDS

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