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KCl

Potassium chloride

IUPAC : Potassium chloride
HalideSaltMineralEverydayFoodIndustrialPharmaceutical

Salt isostructural with NaCl (FCC lattice). The main potassium fertiliser (potash) and a low-sodium table-salt substitute. Also an essential injectable drug (correction of hypokalaemia).

3D ball-and-stick representation of Potassium chloride (formula KCl). Constituent atoms: K, Cl.
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Physical properties

Molar mass74.551 g/mol
State at 20 °Csolid
Density1.984 g/cm³
Melting point1043.00 K (770 °C)
Boiling point1693.00 K (1420 °C)
Solubility (H₂O)34 g/100 mL à 20 °C

Structure

Crystal systemCubic
3D render modeBall-and-stick

Uses and applications

  • Potassium fertiliser (potash, a major fertiliser)
  • Low-sodium salt substitute (food)
  • Medication (correction of hypokalaemia)
  • Road de-icer
  • Potassium source for the chemical industry

Constituent elements

19K
Potassium
17Cl
Chlorine

References

PubChem CID4873
CAS7447-40-7
SMILES[K+].[Cl-]
Sources : PubChem CID 4873 · CRC Handbook of Chemistry and Physics