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, providing clear images of soft tissues and organ structures.

Commonly employed in oil and gas drilling as a weighting agent in drilling fluids. It increases the density of the mud, helping control wellbore pressure and prevent blowouts during drilling operations.

Serves as a filler in the production of plastics, rubber, and paints. It improves mechanical strength, enhances surface finish, and provides resistance to acids and weathering.

Utilized in the manufacture of photographic paper and textiles, where it acts as a coating material to improve brightness and opacity.

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