Monopotassium phosphite

Monopotassium phosphite  |

|

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

3D model (JSmol)

* Interactive image

PubChem CID

* 23701737

UNII |

* 59RSS63D8J Y

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 | 120.085 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

Tracking categories (test):

* PairSizeSet

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 consist of salts of the phosphite anion H2PO3−, the conjugate base of phosphorous acid.[1]

Phosphites of potassium are used as fungicides (in a loose sense) in agriculture to combat water mold infection. Confusingly, they have also been marketed as fertilizers to avoid a regulatory burden. While perfectly capable to supply potassium to the plant, the phosphorus in phosphite form is unavailable to plants, and may even inhibit the uptake of the normal phosphate form if used in excess.[2]

## References

1. ↑ J. Loub (1991). "Crystal Chemistry of Inorganic Phosphites". Acta Crystallogr. B47: 468–473. doi:10.1107/S0108768191002380.
2. ↑ Thao; Yamakawa (2008). "Phosphite (phosphorous acid): Fungicide, fertilizer or bio-stimulator?". Soil Science and Plant Nutrition 55 (2): 228–234. doi:10.1111/j.1747-0765.2009.00365.x.

* v
* t
* e

Potassium compounds

* KAsO2
* KBr
* KBrO3
* KCN
* KCNO
* KCl
* KClO
* KClO3
* KClO4
* KF
* KH
* KHCO2
* KHCO3
* KHF2
* KHS
* KHSO3
* KHSO4
* KH2AsO4
* KH2PO3
* KH2PO4
* KI
* KIO3
* KIO4
* KMnO4
* KNH2
* KN3
* K3N
* KNO2
* KNO3
* KOCN
* KOH
* KO2
* KPF6
* KSCN
* KCH3COO
* K2Al2O4
* K2CO3
* K2CrO4
* K2Cr2O7
* K2FeO4
* K2HPO4
* K2MnO4
* K2O
* K2O2
* K2PtCl4
* K2PtCl6
* K2S
* K2SeO4
* K2SO3
* K2SO4
* KHSO5
* K2S2O5
* K2S2O7
* K2S2O8
* K2Po
* K2SiO3
* K3[Fe(CN)6]
* K3[Fe(C2O4)3]
* K4[Fe(CN)6]
* K3PO4
* K4Mo2Cl8

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Monopotassium phosphite. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Chemistry:Monopotassium_phosphite&oldid=2867166"
*[CID]: Compound ID
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template