Barium sulfate is a chemical compound with the formula BaSO4. It is a white, odorless powder that is insoluble in water. This compound is commonly used in various industries, including the production of paints, plastics, and rubber, due to its high density and brightness. In medicine, barium sulfate is used as a radiocontrast agent for X-ray imaging and CT scans. When ingested or administered, it helps to outline the gastrointestinal tract, allowing doctors to better visualize and diagnose conditions affecting the digestive system.