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60130 Sigma-Aldrich

Potassium chloride

puriss. p.a., ≥99.5% (AT)

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Properties

Related Categories Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, Essential Chemicals, O-P, Puriss p.a.,
InChI Key   WCUXLLCKKVVCTQ-UHFFFAOYSA-M
grade   puriss. p.a.
assay   ≥99.5% (AT)
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-): ≤500 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

Description

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.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
1
RTECS 
TS8050000

Documents

Certificate of Analysis (COA)

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Single- & multi-channel pipettes from BRAND
Protocols & Articles
Peer-Reviewed Papers
15

References

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