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60130

Sigma-Aldrich

Potassium chloride

puriss. p.a., ≥99.5% (AT)

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Linear Formula:
KCl
CAS Number:
Molecular Weight:
74.55
EC Number:
MDL number:
PubChem Substance ID:
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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1 of 4

This Item
126364093161.04933
Potassium chloride puriss. p.a., ≥99.5% (AT)

Sigma-Aldrich

60130

Potassium chloride

-
Potassium chloride puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E508, 99-100.5% (AT), ≤0.0001% Al

Sigma-Aldrich

12636

Potassium chloride

Essential Grade
Potassium chloride 99.999% trace metals basis

Sigma-Aldrich

409316

Potassium chloride

-
Potassium chloride for analysis (® ACS,ISO,Reag. Ph Eur

Supelco

1.04933

Potassium chloride

-
assay

≥99.5% (AT)

assay

99-100.5% (AT)

assay

99.999% trace metals basis

assay

99-100.5% dry basis (silver nitrate titration), 99.5-100.5% (silver nitrate titration)

form

powder or crystals

form

powder or crystals

form

solid

form

solid

impurities

≤0.001% total nitrogen (N)

impurities

acidity or alkalinity, complies, organic volatile impurities, complies (GC), residual solvents, complies, ≤0.0001% Al, ≤0.0005% heavy metals (as Pb), ≤0.003% free acid (as HCl), ≤0.005% free alkali (as KOH), ≤0.02% Mg, alkaline earth metals (as Ca)

impurities

≤15.0 ppm Trace Metal Analysis

impurities

≤0.005% Insoluble matter

pH

5.5-8.0 (20 °C, 50 mg/mL in H2O)

pH

7

pH

-

pH

5.5-8.0 (25 °C, 50 g/L in H2O)

mp

770 °C (lit.)

mp

770 °C (lit.)

mp

770 °C (lit.)

mp

770 °C (lit.)

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 Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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The Journal of Chemical Thermodynamics, 9(4), 391-396 (1977)
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