Used as a contrast agent in medical imaging, particularly in X-ray and CT scans of the gastrointestinal tract. It helps outline the esophagus, stomach, and intestines, providing clear images due to its high density and ability to block X-rays.

Commonly added to drilling fluids in oil and gas exploration to increase fluid density, which helps control well pressure and prevent blowouts.

Employed in the manufacturing of paints, coatings, and plastics as a filler to improve opacity, durability, and resistance to corrosion.

Utilized in the paper industry to produce high-gloss paper by filling pores and creating a smooth surface.

Found in some types of radiation shielding materials because of its ability to absorb ionizing radiation.