KCl is a water-soluble salt that is often used in cooking. It is also used in the production of soap and in the production of paper. It is a common ingredient in processed foods, such as canned corn. It is also a component of Epsom salt, as well as a natural mineral found in soil. When ingested, it can cause a significant loss of potassium. KCl is an essential mineral for plant life. When it is ingested, it can cause a significant loss of potassium.