Monopotassium phosphite

Monopotassium phosphite

115px Ball-and-stick model of the component ions
Names
IUPAC name Potassium hydrogen phosphonate
Other names Potassium dihydrogen phosphite; Mono potassium phosphite; Monopotassium dihydrogen phosphite; Potassium phosphite monobasic
Identifiers
CAS Number	13977-65-6 Y
Jmol 3D model	Interactive image
PubChem	23701737
InChI InChI=1S/K.H2O3P/c;1-4(2)3/h;1-2H/q+1;-1 Key: BZHCGFBZBPVRFE-UHFFFAOYSA-N
SMILES OP(O)[O-].[K+]
Properties
Chemical formula	H2KO3P
Molar mass	120.09 g·mol−1
Appearance	white crystals
Density	2.14 g/cm3
Solubility in water	2200 g/L
Solubility	soluble in ethanol
Structure
Crystal structure	monoclinic
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Monopotassium phosphite in mixture with dipotassium phosphite is primarily a water-soluble fungicide.

Synthesis

It can be formed by the reaction of a potassium ion (e.g. from potassium hydroxide) with an equimolar amount of phosphorous acid.

See also

• Phosphorous acid
• Potassium