Potassium chloride is an inorganic compound and is classified within the chloride group, acting as the potassium salt of hydrochloric acid.

One of its primary uses is as a potassium fertilizer, providing essential nutrients to crops. Additionally, potassium chloride is often mixed with salt to aid in the de-icing process of roads during winter conditions. In the medical field, formulations of potassium chloride are administered to treat deficiencies in potassium ions.