Potassium Acetate

Description

Potassium acetate (CH3CO2K) is the potassium salt of acetic acid. It is generally used as an acidity regulator, buffer, preservative and firming agent.

Chemical properties

Potassium acetate, KC2H302, is a white, deliquescent solid, soluble in water and alcohol, insoluble in ether, that melts at 292°C. It is odorless or has a faint acetic odor and a saline taste. It is used as an analytical reagent, dehydrating agent, in medicine, and in crystal glass manufacture.

The Uses of Potassium Acetate

Potassium acetate is used in the manufacture of glass; as a softening agent for papers and textiles; as a dehydrating agent; and as a buffer. In medicine it is used as an expectorant and diuretic. In the food industry it is used as a food additive, an acidity regulator and a preservative. Potassium acetate is used as diuretic and urinary alkaliser, and acts by changing the physical properties of the body fluids and by functioning as an alkali after absortion.

Indications

Potassium is used to regulate hypokalemia as a primary condition or secondary to other medical conditions.

Definition

ChEBI: A potassium salt comprising equal numbers of potassium and acetate ions

Preparation

Potassium acetate is prepared by addition of potassium carbonate in a small volume of water to acetic acid solution, followed by evaporation and crystallization:
K2CO3+ 2CH3COOH →2CH3COOK + H2O