Calcium sulfate, commonly known as CaSO4, is a chemical compound made up of calcium, sulfur, and oxygen. It appears as a white powder or crystalline solid and is often found in nature as the mineral gypsum. Calcium sulfate is widely used in construction, particularly in the production of drywall and plaster. In addition to its construction applications, CaSO4 is also utilized in the food industry as a coagulant in tofu production and as a food additive. It plays a role in agriculture as a soil conditioner, helping to improve soil structure and drainage.