Potassium sulfate is a chemical compound often used in the manufacture of fertilizers, glass, and pharmaceuticals. It is also known by the synonym of sulphate of potash. Other synonyms for potassium sulfate include arcanite, dipotassium sulfate, and potassium sulfate anhydrous. Potassium sulfate is also referred to as potash, which is the common name for a group of potassium-containing minerals used in agriculture. Additionally, potassium sulfate is sometimes referred to by its chemical formula, K2SO4. Regardless of the name used, potassium sulfate is an important compound with a variety of applications across many different industries.