Barium sulfate

Barium sulfate is an important inorganic compound with the chemical formula BaSO₄. Due to its high density, chemical inertness, whiteness, and radiation absorption capability, it is widely used in industries such as chemical manufacturing, pharmaceuticals, coatings, plastics, and petroleum. Barium sulfate is categorized into natural barium sulfate, precipitated barium sulfate, and modified barium sulfate. Natural barium sulfate is low in cost but has relatively low purity (BaSO₄ content ranging from 90% to 95%), making it suitable for low-end filling applications. Precipitated barium sulfate offers high purity (≥98%) and fine particle size (0.5–10 μm), and is used in high-end applications.