Potassium sulfate is most commonly used in agriculture as a fertilizer, providing potassium and sulfur. This substance is not harmful to plants due to the absence of chlorine in its composition. Potassium sulfate is also used in glassmaking. In the military industry, potassium sulfate is used to reduce the intensity of the flash of light resulting from the explosion of heavy artillery shells, such as cannon, tank, and mortar shells.

Raw materials for the production of potassium sulfate
are sulfuric acid, potassium chloride.