Used as a contrast agent in medical imaging, particularly in X-ray and CT scans of the gastrointestinal tract. It helps visualize the esophagus, stomach, and intestines due to its ability to block X-rays, creating clear outlines of internal structures.

Commonly employed in the oil and gas industry as a weighting agent in drilling fluids to control wellbore pressure and prevent blowouts.

Serves as a filler in the production of plastics, rubber, and paint, improving density, durability, and surface finish.

Utilized in the manufacture of paper as a coating pigment to enhance brightness, smoothness, and printability.

Found in some types of radiation shielding materials, taking advantage of its high density and low conductivity.