Barium Carbonate


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barium carbonate

[′bar·ē·əm ′kär·bə·nət]
(inorganic chemistry)
BaCO3 A white powder with a melting point of 174°C; soluble in acids (except sulfuric acid); used in rodenticides, ceramic flux, optical glass, and television picture tubes.

Barium Carbonate

 

BaCO3, a salt; colorless crystals with a density of 4.3–4.4 g/cm3 and a melting point of 1740° C. Poorly soluble in water (20 mg per liter at 18° C) and highly soluble in hydrochloric and nitric acids. Barium carbonate is found in nature in the form of the mineral witherite. It is produced from barium sulfide by the reaction BaS + H2O + CO2 = BaCO3 + H2S. It is used in producing other barium compounds, in softening water, and in the manufacture of optical glass, enamels, and glazes.

References in periodicals archive ?
Barium compounds, such as barium sulfate and barium carbonate, which do not dissolve well in water, can last a long time in the environment.
When thoroughly mixed into the clay body, barium carbonate will precipitate soluble salts from solution yielding barium sulphate, which is insoluble.
Traces of barium carbonate were detected in the 25: 2 (CW : BT ratio) sample.
White or gray powder microstrip, in the air to absorb carbon dioxide emits oxygen generation barium carbonate, with the formation of acid salt and hydrogen peroxide.
(16.) MSDS: Nitrocellulose, available at http://hazard.com/msds/ f2/bdm/bdmvk.html (accessed October 2, 2009); MSDS: Nitroguanidine, 99%, Moistened with ca 25% Water, available at http://fscimage.fishersci.com/msds/07334.htm (accessed October 4, 2009); MSDS: Ammonium Perchlorate, available at http://hazard.com/msds/f2/bnr/bnrmk.html (accessed October 4, 2009); MSDS: Barium Carbonate, available at http://www.jtbaker/com/msds/englishhtml/b0348.htm (accessed October 4, 2009); MSDS: Titanium, Powder, available at http://fscimage.fishersci.com/msds/24016.htm (accessed October 4, 2009); MSDS: Polyvinyl Chloride, available at http://hazard.com/msds/ files/ cjn/cjnzh.html (accessed October 4, 2009).
Lines covered in the deal include salts, sulphur (except sublimed, precipitated and colloidal sulphur), natural graphite, quartz, silica and quartz sands, kaolin or other kaolinitic clays, bentonite, decolourising earths and Fuller's earth, fire-clay, andalusite, mullite, chamotte, microdol, natural calcium phosphates, natural barium sulphate, natural barium carbonate, gypsum, white asbestos, talc, natural arsenite, strontianite (not stronitium oxide), natural cryolite and chiolite, fluorspar, vermiculite, perlite and chlorites (unexpanded), and others.
The process of making the chemical composition comprises the steps of filling a mixer with 30-60% by weight of hot water and adding 10-20% by weight of barium carbonate or strontium carbonate, 10-20% by weight of phosphoric acid (75%), 5-15% by weight of lime, and 10-20% by weight of boric acid; mixing the contents for 10-15 minutes to create a wet slurry; pouring the wet slurry into an attrition mill for 15-60 minutes; drying the wet slurry and milling it to an average particle size of one to two microns to form a dry pigment; and pushing the dry pigment through a 325 mesh sieve.
In addition, runs were made with barium carbonate, calcium carbonate and silica with walstromite resulting only at temperatures above 425 [degrees]C at 2 kilobars pressure.
A dose of barium carbonate, oatmeal, dripping and salt should do the trick.
The experimenter, wishing to fabricate his or her own superconductive tiles may wonder where from to obtain such esoteric materials as barium carbonate and yttrium oxide, as well as the magnetic materials, crucibles and other components and tools for a successful experiment.
[USPRwire, Wed May 01 2019] Barium carbonate is a water-insoluble salt which is primarily used for the removal of efflorescence from bricks and tiles.