barium sulfate
barium sulfate
bar′ium sul′fate
n.
barium sulfate
| Noun | 1. |  barium sulfate - a white insoluble radiopaque powder used as a pigment |
n.
barium sulfate
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]barite
barium sulfate
barium
(Ba) [bar´e-um]Barium sulfate is a harmless chalky, water-insoluble compound that does not permit x-rays to pass through it. Taken before or during an examination, it causes the intestinal tract to stand out in silhouette when viewed through a fluoroscope or seen on an x-ray film.
Two main types of tests are conducted with the use of barium: the barium meal or barium swallow, for radiologic examination of the upper gastrointestinal tract, and the barium enema for examination of the lower gastrointestinal tract.
bar·i·um sul·fate
See also: barium meal.
Barium sulfate
barium sulfate
- noun
Synonyms for barium sulfate
noun a white insoluble radiopaque powder used as a pigment
Synonyms
- barium sulphate
- blanc fixe
Related Words
- sulfate
- sulphate
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