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Potassium chloride

ReagentPlus®, ≥99.0%

Linear Formula:
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

product line





powder or crystals


5.5-8.5 (20 °C, 50 g/L)


770 °C (lit.)


1.98 g/mL at 25 °C (lit.)

SMILES string




InChI key


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General description

Potassium chloride (KCl) is an inorganic salt commonly used in fertilizer industry. Its generation via chlorination of microcline has been reported. The intrinsic and extrinsic conductivity of KCl crystals have been measured. The impact of KCl on the activity of mitochondrial membrane, cristae and matrix proteins has been investigated. It facilitates the preparation of isoxazolines in aqueous medium.


Potassium chloride has been used in the preparation of perfusion buffer stock solution (1X).
It has been used in the preparation of the following buffers for small unilamellar vesicles (SUVs) preparation:
  • Escherichia coli supported lipid bilayer (SLB) buffer
  • extract buffer (XB)
  • high-salt extract buffer (HS-XB)
May be used for the preparation of phosphate buffered saline, and for the extraction and solubilization of proteins.


500 g in poly bottle
1 kg in poly bottle
5 kg in poly drum

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Storage Class Code

13 - Non Combustible Solids

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Coculture between hMADS and Mouse Adult CM.
Figeac F, et al.
Bio-protocol, 4(14) (2014)
Using supported bilayers to study the spatiotemporal organization of membrane-bound proteins.
Nguyen PA, et al.
Methods in Cell Biology, 128, 223-241 (2015)
Electrical Conductivity of Potassium Chloride.
Fuller RG, et al.
Physical Review Letters, 20(13), 662-662 (1968)
Potassium chloride production by microcline chlorination.
Orosco P and del Carmen Ruiz M.
Thermochimica Acta, 613, 108-112 (2015)
An environmentally benign synthesis of isoxazolines and isoxazoles mediated by potassium chloride in water.
Han L, et al.
Tetrahedron Letters, 55(14), 2308-2311 (2014)

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