Phosphite de monopotassium

Phosphite de monopotassium
Image illustrative de l’article Phosphite de monopotassium
Structure du phosphite de monopotassium.
Identification
Nom UICPA dihydrogénophosphite de potassium
No CAS 13977-65-6
No ECHA 100.116.175
PubChem 23701737
SMILES
InChI
Apparence cristaux blancs
Propriétés chimiques
Formule H2KO3P
Masse molaire[1] 120,086 1 ± 0,001 1 g/mol
H 1,68 %, K 32,56 %, O 39,97 %, P 25,79 %,
Propriétés physiques
Masse volumique 2,14 g·cm-3
Cristallographie
Système cristallin Monoclinique
Précautions
SGH
SGH07 : Toxique, irritant, sensibilisant, narcotique
Attention
H319

Unités du SI et CNTP, sauf indication contraire.

Le phosphite de monopotassium ou dihydrogénophosphite de potassium est un composé inorganique de formule KH2PO3. Il se constitue de l'anion phosphite (H2PO3), la base conjuguée de l'acide phosphoreux[2], et d'un cation potassium. Il est utilisé dans certains engrais.

Références

  1. Masse molaire calculée d’après « Atomic weights of the elements 2007 », sur www.chem.qmul.ac.uk.
  2. J. Loub, « Crystal Chemistry of Inorganic Phosphites », Acta Crystallogr., vol. B47,‎ , p. 468–473 (DOI 10.1107/S0108768191002380)

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