It is administered, orally or by enema, as a suspension of fine particles in an aqueous solution (often with sweetening agents added). Although barium is a heavy metal, and its water-soluble compounds are often highly toxic, the extremely low solubility of barium sulfate protects the patient from absorbing harmful amounts of the metal. Barium sulfate is also readily removed from the body, unlike Thorotrast, which it replaced. Due to the relatively high atomic number (Z = 56) of barium, its compounds absorb X-rays more strongly than compounds derived from lighter nuclei.
It is used in brake linings, anacoustic foams and powder coatings
Barium sulfate is also used during the procedure of the soil pH test. In this test it is used so that it precipitates out any particles (usually clay particles) which would otherwise 'cloud' solution preventing one from seeing the colour of the pH indicator i.e. the result of the test.
It is used in root canal filling.
In colorimetry barium sulfate is used as a near-perfect diffuser when measuring light sources.
In photography it is used as a coating for certain photographic papers.
In metal casting, the moulds used are often coated with barium sulphate in order to prevent the molten metal from bonding with the mould.
Nanometer barium sulfate starts commercialization.(New Products)(Shanxi Nanfeng Group Technical Center and North China College of Technology)(Brief Article)
May 16, 2004; Nanometer barium sulfate and sub-micron barium sulfate developed by Shanxi Nanfeng Group Technical Center and North China College...
Evaluation of gastrointestinal tract transit times using barium-impregnated polyethylene spheres and barium sulfate suspension in a domestic pigeon (Columba livia) model.(Original Studies)(Report)
Mar 01, 2010; Abstract: Barium impregnated polyethylene spheres (BIPS) are used in small animal medicine as an alternative to barium sulfate...