Barium sulfate (or sulphate) is the inorganic compound with the chemical formula BaSO4. It is a white crystalline solid that is odorless and insoluble in water. It occurs as the mineral barite, which is the main commercial source of barium and materials prepared from it.
Barium sulfate works by coating the inside of your esophagus, stomach, or intestines which allows them to be seen more clearly on a CT scan or other radiologic (x-ray) examination. Barium sulfate is used to help diagnose certain disorders of the esophagus, stomach, or intestines.
Physical properties: Pure barium sulfate is found as white, odorless powder or small crystals with a density of 4.49 g/mL, melting point of 1580 °C and boiling point of 1600 °C. Chemical properties: Barium sulfate is known for its poor solubility in water