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Monopotassium phosphate

  • Page ID
    81457
    • Main ChemSpider page
    • Molecular formula: H2KO4P
    • Molar mass: 136.086
    • CAS Registry Number: Not available
    • Appearance: Potassium dihydrogen phosphate, 98+%; Potassium dihydrogen phosphate, ACS, 99.0% min; Potassium dihydrogen phosphate, Puratronic®, 99.999% (metals basis), Si 10ppm max; Potassium dihydrogen phosphate, 98+%; Potassium dihydrogen phosphate, ACS, 99.0% min; Potassium dihydrogen phosphate, Puratronic®, 99.999% (metals basis), Si 10ppm max; odourless white crystals or powder
    • Melting point: 252.6 °C
    • Boiling point: Not available
    • Solubility: Slightly soluble in water. Insoluble in alcohol
    • Safety sheet: Not available
    • Spectra: Check on SDBS. Add Spectra (Help).

    From Wikipedia

    Monopotassium phosphate, MKP, (also potassium dihydrogenphosphate, 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 minimizes escape of ammonia by keeping the pH at a relatively low level.

    Single crystals are paraelectric at room temperature. At temperatures below they become ferroelectric.

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    Other names

    Potassium dihydrogen phosphate (IUPAC Name); Monopotassium dihydrogen phosphate; Monopotassium monophosphate; Monopotassium orthophosphate; Phosphoric acid monopotassium salt; Potassium salt phosphoric acid; potassium dihydrogen-phosphate; Potassium diphosphate; Potassium orthophosphate