Barium sulfate is the inorganic compound with the chemical formula BaSO4. It is a white crystalline solid that is odorless and insoluble in water. It occurs as the mineral barite, which is the main commercial source of barium and materials prepared from it. The white opaque appearance and its high density are exploited in its main applications.
Ultra-fine modified precipitated barium sulfate for general use is a kind of white powder without any taste.Its specific gravity is 4.20. It is the highest of the minerals. Ultra-fine modified precipitated barium sulfate for general use is chemically inert and insoluble in water, Alcohol,or many other solvents,except hot concentrated sulfuric acid.Although soluble salts of barium are moderately toxic to humans, barium sulfate is nontoxic due to its insolubility. The most common means of inadvertent barium poisoning arises from the consumption of soluble barium salts mislabeled as BaSO4. In the Celobar incident (Brazil, 2003), nine patients died from improperly prepared radiocontrast agent.
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