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A note to our European Union customers
International shipping is currently disabled due to ongoing issues resulting from Brexit and changes with customs procedures. Please note, once resumed, international shipments will be subject to VAT and duties and orders can only be placed in acceptance of this.

Northern Ireland
We will only be able to ship to Northern Ireland where a Royal Mail postal option has been chosen.

Other UK orders are unaffected

Potassium dihydrogen Phosphate 99-102.00% Anhydrous ACS, FG

Price: £3.95

Stock Availability:

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Stock Availability
On Shelf - Approx. UK delivery date: Tuesday the 27th May 2025*
In bulk stock - ships within 4 - 8 Days (Excluding weekends and public holidays)
4 - 6 Weeks Approx.
* We will always try to ship as early as possible
  • Fertiliser
  • Fungicide
  • In aquariums to bring Phosphate Levels Up
  • Buffering Agent

Monopotassium phosphate, MKP, (also potassium dihydrogen phosphate, KDP, or monobasic potassium phosphate), KH2PO4, is a soluble salt of potassium and the dihydrogen phosphate ion which is used as a fertilizer, a food additive and a fungicide. It is a source of phosphorus and potassium. It is also a buffering agent. When used in fertilizer mixtures with urea and ammonium phosphates, it minimises escape of ammonia by keeping the pH at a relatively low level.

  • Minimum Assay: >100.2%
  • Molecular Formula: KH2PO4
  • Molecular Weight: 136.09 g/mol
  • Melting Point: 252.6 °C
  • pH (1% Solution): 4.2 - 4.8
  • Lead (Pb): <1ppm
  • Arsenic (As): <1ppm
  • Cadmium (Cd): <1ppm
  • Mercury (Hg): <1ppm
  • Fluroide (F): < 10ppm

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 7778-77-0
Einecs No: 231-913-4

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