Noun
a white insoluble radiopaque powder used as a pigment
Source: WordNetHowever, oral alternatives to iodinated contrast exist, such as very dilute (0.5–1% w/v) barium sulfate suspensions. Source: Internet
The remaining residue was then treated with sodium carbonate to convert the barium sulfate into barium carbonate carrying the radium, thus making it soluble in hydrochloric acid. Source: Internet
Barium sulfate It is an inorganic compound, its chemical formula is BaSO. Source: Internet
The residues also contained rather substantial amounts of barium sulfate which thus acted as a carrier for the radium sulfate. Source: Internet
The uranium had been extracted by dissolution in sulfuric acid leaving radium sulfate, which is similar to barium sulfate but even less soluble in the residues. Source: Internet