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 ?
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.
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 apparent upturn in the economies of many industrialized countries should see an improvement in markets for barium carbonate in glass and ceramics and for barite as fillers/extenders in paints, plastics, rubber, and brake linings.
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.
com/research/5e0d37/the_world_market_f) has announced the addition of the "The World Market for Natural Barium Sulfate (Barytes) and Natural Barium Carbonate (Witherite) Excluding Purified Barium Oxide: A 2011 Global Trade Perspective" report to their offering.
Tenders are invited for Supply of barium carbonate tank 050 to dcl
When thoroughly mixed into the clay body, barium carbonate will precipitate soluble salts from solution yielding barium sulphate which is insoluble.
com/research/4f6a29/the_2011_world_for) has announced the addition of the "The 2011 World Forecasts of Natural Barium Sulfate (Barytes) and Natural Barium Carbonate (Witherite) Excluding Purified Barium Oxide Export Supplies" report to their offering.
Tenders are invited for Unloading of hydrated lime, Soda ash, Barium carbonate, Sodium sulphite etc from truck/trailors and subsequent stacking at the godown as per direction.