Monopotassium phosphite

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Monopotassium phosphite
Names
IUPAC name
Potassium hydrogen phosphonate
Other names
Potassium dihydrogen phosphite; Mono potassium phosphite; Monopotassium dihydrogen phosphite; Potassium phosphite monobasic
Identifiers
3D model (JSmol)
ECHA InfoCard 100.116.175 Edit this at Wikidata
  • InChI=1S/K.H2O3P/c;1-4(2)3/h;1-2H/q+1;-1
    Key: BZHCGFBZBPVRFE-UHFFFAOYSA-N
  • OP(O)[O-].[K+]
Properties
H2KO3P
Molar mass 120.085 g·mol−1
Appearance white crystals
Density 2.14 g/cm3
2200 g/L
Solubility soluble in ethanol
Structure
monoclinic
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Monopotassium phosphite is an inorganic compound with the formula KH2PO3. A compositionally related compound has the formula H3PO3.2(KH2PO3). Both are white solids that contain salts of the phosphite anion H2PO3−, the conjugate base of phosphorous acid. These materials have been used in some fertilizers.[1]

References

  1. ^ "Crystal chemistry of inorganic phosphites", J. Loub, Acta Crystallogr. (1991), B47, 468–473, doi:10.1107/S0108768191002380


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