Potassium chloride (KCl) is an inorganic salt composed of potassium and chloride ions. It is commonly used in food processing as a salt substitute due to its ability to impart a salty flavor while containing less sodium than regular table salt. KCl is also utilized in fertilizers, medicine, and as a laboratory reagent. It is naturally found in mineral deposits and seawater. In culinary applications, it enhances flavor and can be used in low-sodium diets. KCl is recognized for its role in maintaining electrolyte balance in the body, making it significant for health and nutrition.