Potassium methanesulfonate is widely used as an electrolyte in electrochemical applications, particularly in supercapacitors and batteries, due to its high ionic conductivity and stability. It is also employed in electroplating processes to improve the quality and uniformity of metal coatings. In organic synthesis, it serves as a mild and non-corrosive reagent for various reactions, including esterifications and polymerizations. Additionally, it is utilized in the production of specialty chemicals and as a catalyst or additive in certain industrial processes. Its low toxicity and environmental friendliness make it a preferred choice in green chemistry applications.