BeSO4

Barium sulfate, with the chemical formula BeSO4, is an inorganic salt. It is a white, crystalline solid that is insoluble in water and most common solvents. This insolubility is a key characteristic of barium sulfate. It is formed from the reaction of barium ions (Ba2+) and sulfate ions (SO42-). While naturally occurring, it is often produced synthetically for industrial and medical applications. The natural mineral form is known as barite.

In medicine, barium sulfate is used as a contrast agent in X-ray imaging. When ingested or administered rectally, its high atomic number allows it to absorb X-rays, making the gastrointestinal tract visible on radiographs. This is crucial for diagnosing various conditions of the esophagus, stomach, and intestines. It is considered safe for medical use because it is not absorbed by the body.

Industrially, barium sulfate finds applications as a filler in plastics and paints due to its density and whiteness. It is also used in the production of other barium compounds and in drilling fluids for oil and gas exploration. Its inertness and density contribute to its utility in these diverse fields.