barium sulfate

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barium sulfate:

see baritebarite
, barytes
[New Lat., from barium], or heavy spar,
a white, yellow, blue, red, or colorless mineral. It is a sulfate of barium, BaSO4, found in nature as tabular crystals or in granular or massive form and has a high specific gravity.
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Barium Sulfate


BaSO4, a salt; colorless crystals with a density of 4.5 g/cm3 and a melting point of 1580° C. This compound is virtually insoluble in water (2 mg per liter at 18° C) but is highly soluble in concentrated H2SO4 as a result of the formation of a complex compound. Barium sulfate is found in nature in the form of the mineral barite, which is the principal raw material for production of barium and its compounds. It is a component of the white pigment lithopone and is included in high-quality paper (which gives it its whiteness and smoothness). Petroleum workers use barium sulfate as a weighting material in drilling deep wells. This compound absorbs X rays well and is therefore used in fluoroscopic examinations, particularly of the gastrointestinal tract.

barium sulfate

[′bar·ē·əm ′səl‚fāt]
(inorganic chemistry)
BaSO4 A salt occurring in the form of white, rhombic crystals, insoluble in water; used as a white pigment, as an opaque contrast medium for roentgenographic processes, and as an antidiarrheal.


A mineral used in concrete as an aggregate, esp. for the construction of high-density radiation shielding; also called barium sulfate.
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Late changes in barium sulfate aspiration: HRCT features.
2,3) In pet and captive avian species, barium sulfate suspension has been used to assess GI structure, as well as to observe GI transit.
Premium grades of highly pure, low-iron, platy talcs, high-purity calcium carbonates, phlogopite micas, and ground white barium sulfate for high-density compounds.
Combined with the strength of our Barium Sulfate and other product groups, for the year we were able to more than offset the tough market conditions and lower utilization levels of our TiO2 business.
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Contract awarded for barium sulfate suspension for high density in individual with granules 340g pack included sparkling; studies for gastric double contrast.
Barium sulfate, commonly used as a radio-opaque filler in medical plastics, has now been precipitated in nano-sized particles of 10 to 50 microns by Solvay Barium Strontium GmbH in Hannover, Germany.
MED2-4800 (unrestricted) and MED2-4900 (restricted) contain 50% barium sulfate, and MED3-4800 (unrestricted) and MED3-4900 (restricted) contain 50% titanium dioxide by weight.
The polyvinyl alcohol has a polymerization degree ranging from 900 to 1100 and a saponification degree ranging from 86 mol percent to 90 mol percent, wherein the barium sulfate has a purity degree of 99.
Other new products are 1040S and 2010S, which are specialty surface-treated grades of barium sulfate designed to reduce dusting, increase filler loadings, and increase throughput in the extrusion process.
Its inorganic science and product modification techniques have resulted in advancing the art in specialty silica and silicates, alumina trihydrate, magnesium hydroxide, barium sulfate and natural calcium carbonate.
Net sales increased 15 percent during the second quarter of 2014, as sales growth in the Specialty Alumina and Barium Sulfate products was somewhat offset by a decrease in TiO2 Pigment Sales.