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Merck

P3911

Potassium chloride

ACS reagent, 99.0-100.5%

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About This Item

Linear Formula:
KCl
CAS Number:
7447-40-7
Molecular Weight:
74.55
NACRES:
NA.21
PubChem Substance ID:
329820194
UNSPSC Code:
12352302
EC Number:
231-211-8
MDL number:
MFCD00011360
Assay:
99.0-100.5%
Grade:
ACS reagent
Form:
powder
Solubility:
water: soluble (355 g/l at 25 °C (77 °F))

Key Documents

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Quality Level

200

InChI key

WCUXLLCKKVVCTQ-UHFFFAOYSA-M

InChI

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

SMILES string

[Cl-].[K+]

grade

ACS reagent

assay

99.0-100.5%

form

powder

impurities

≤0.005% Insoluble matter

pH

5.4-8.6 (25 °C, 5% in solution)

mp

770 °C (lit.)

solubility

water: soluble (355 g/l at 25 °C (77 °F))

density

1.98 g/mL at 25 °C (lit.)

anion traces

bromide (Br-): ≤0.01%, chlorate, nitrate (as NO3-): ≤0.003%, iodide (I-): ≤0.002%, phosphate (PO43-): ≤5 ppm, sulfate (SO42-): ≤0.001%

cation traces

Ba:, passes test (limit about 0.001%), Ca: ≤0.002%, Fe: ≤3 ppm, Mg: ≤0.001%, Na: ≤0.005%, heavy metals: ≤5 ppm (by ICP-OES )

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General description

Potassium chloride 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.

Application

May be used for the preparation of phosphate buffered saline, and for the extraction and solubilization of proteins.
Potassium chloride has been used in the preparation of the following:
  • Amorphous calcium phosphate (ACP) deposition solution, used for ACP coating on Ti coupons.
  • Modified methylene blue (MB) solution, utilized in the MB two-phase titration method.
  • 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES)-containing artificial cerebrospinal fluid (ACSF) solutions.
  • Artificial sea water.

Other Notes

Go to Redi-Dri™ Product Listing 746436

Legal Information

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

Storage Class

13 - Non Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
0000527098
0000527099
0000527099
0000527098
0000524162

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Stability of stearic acid monolayers on Artificial Sea Water.
Brzozowska AM, et al.
Colloids and Surfaces. A, Physicochemical and Engineering Aspects, 407, 38-48 (2012)
Comparison of titanium soaked in 5M NaOH or 5M KOH solutions.
Kim C, et al.
Materials Science and Engineering, C, 33(1), 327-339 (2013)
Electrical Conductivity of Potassium Chloride.
Fuller RG, et al.
Physical Review Letters, 20(13), 662-662 (1968)
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)
Leyu Cui et al.
Analytical chemistry, 86(22), 11055-11061 (2014-11-05)
The methylene blue (MB) two-phase titration method is a rapid and efficient method for determining the concentrations of anionic surfactants. The point at which the aqueous and chloroform phases appear equally blue is called Epton's end point. However, many inorganic
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