Calcium sulfate dihydrate, commonly known as gypsum, is a naturally occurring mineral composed of calcium, sulfur, and water. Its chemical formula is CaSO4·2H2O. Gypsum is widely used in construction, particularly in the production of drywall and plaster, due to its fire-resistant properties and ability to provide a smooth finish. In addition to construction, calcium sulfate dihydrate has applications in agriculture as a soil conditioner and in the food industry as a coagulant in products like tofu. It is also used in the production of cement and as a desiccant in various industrial processes.