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12636 Sigma-Aldrich

Potassium chloride

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

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Properties

Related Categories Chemical Synthesis, Essential Chemicals, Inorganic Salts, Potassium, Potassium Salts,
InChI Key   WCUXLLCKKVVCTQ-UHFFFAOYSA-M
Quality Level   200
grade   puriss.
assay   99-100.5% (AT)
quality   meets analytical specification of Ph. Eur., BP, USP, FCC, E508
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)
loss   ≤0.5% loss on drying, 105 °C, 3 h
mp   770 °C (lit.)
density   1.98 g/mL at 25 °C (lit.)
anion traces   bromide (Br-): ≤1000 mg/kg
  iodide (I-): ≤50 mg/kg
  sulfate (SO42-): ≤100 mg/kg
cation traces   Al: ≤1 mg/kg
  As: ≤0.5 mg/kg
  Ba:, in accordance
  Ca: ≤50 mg/kg
  Cd: ≤1 mg/kg
  Cu: ≤10 mg/kg
  Fe: ≤10 mg/kg
  Hg: ≤1 mg/kg
  Mg: ≤50 mg/kg
  Na: ≤700 mg/kg
  Pb: ≤5 mg/kg
  Zn: ≤20 mg/kg
suitability   complies for appearance of solution

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 slats. 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.
Potassium chloride can be used as a fertilizer and as a regenerant to soften water. It has been used a buffer for the separation of major purine metabolites in the heart, using reverse phase ion pair chromatography(RPIPC).

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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