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Sigma-Aldrich

Potassium chloride

puriss. p.a., ≥99.5% (AT)

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About This Item

Linear Formula:
KCl
CAS Number:
7447-40-7
Molecular Weight:
74.55
EC Number:
231-211-8
MDL number:
MFCD00011360
UNSPSC Code:
12352302
PubChem Substance ID:
329758757
NACRES:
NA.21

grade

puriss. p.a.

assay

≥99.5% (AT)

form

powder or crystals

impurities

≤0.001% total nitrogen (N)

pH

5.5-8.0 (20 °C, 50 mg/mL in H2O)

mp

770 °C (lit.)

density

1.98 g/mL at 25 °C (lit.)

anion traces

bromide (Br-): ≤700 mg/kg
iodide (I-): ≤20 mg/kg
phosphate (PO43-): ≤5 mg/kg
sulfate (SO42-): ≤30 mg/kg

cation traces

Ca: ≤50 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤2 mg/kg
Mg: ≤10 mg/kg
Mn: ≤5 mg/kg
Na: ≤200 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

[Cl-].[K+]

InChI

1S/ClH.K/h1H;/q;+1/p-1

InChI key

WCUXLLCKKVVCTQ-UHFFFAOYSA-M

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General description

Potassium chloride, an alkali metal halide, is a colorless crystalline salt. Its solubility in water is directly proportional to increase in temperature. It can be prepared from potassium hydroxide, via neutralization reaction with HCl. Calorimetric estimation of the enthalpy of solution of potassium chloride in water has been described.

Application

Potassium chloride may be used in the preparation of fertilizer, potassium hydroxide, potassium carbonate and other potassium salts. It may be used in the calorimetric determination of enthalpy and heat capacity values during the deprotonation (loss of proton H+) of buffers. From these values temperature dependence of the pH of these buffers was calculated.
May be used for the preparation of phosphate buffered saline, and for the extraction and solubilization of proteins.

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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H Fukada et al.
Proteins, 33(2), 159-166 (1998-10-21)
Enthalpy and heat capacity changes for the deprotonation of 18 buffers were calorimetrically determined in 0.1 M potassium chloride at temperatures ranging from 5 to 45 degrees C. The values of the dissociation constant were also determined by means of
The use of potassium chloride and tris (hydroxymethyl) aminomethane as standard substances for solution calorimetry.
Rychly R and Pekarek V.
The Journal of Chemical Thermodynamics, 9(4), 391-396 (1977)
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Sedatives in the neurointensive care unit can strongly influence patients' risks of developing secondary brain damage. In particular, isoflurane, a volatile anesthetic, has been recently re-introduced to the neurointensive care unit, and first clinical studies suggest beneficial effects due to
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High-protein diets induce alterations in metabolism that may prevent diet-induced obesity. However, little is known as to whether different protein sources consumed at normal levels may affect diet-induced obesity and associated co-morbidities. We fed obesity-prone male C57BL/6J mice high-fat, high-sucrose
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