The common name for potassium chloride is "muriate of potash."
Potassium chloride (KCl) is a salt that is commonly used as a fertilizer for plants. It is often referred to as muriate of potash because it was historically produced from the mineral sylvite, which was also known as muriate of potash. Potassium is an essential nutrient for plant growth and is necessary for many physiological processes such as water regulation, photosynthesis, and root development.