Potassium chloride, analkali metal halide, is a colorless crystalline salt. Its solubility in wateris 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 ofpotassium chloride in water has been described.
Potassium chloride maybe used in the preparation of fertilizer, potassium hydroxide, potassiumcarbonate 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 softenwater. It has been used a buffer for the separation of majorpurine metabolites in the heart, using reverse phase ion pairchromato graphy(RPIPC).
May be used for the preparation of phosphate buffered saline, and for the extraction andsolubilization of proteins.