calcium chloride

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calcium chloride,

CaCl2, chemical compound that is crystalline, lumpy, or flaky, is usually white, and is very soluble in water. The anhydrous compound is hygroscopic; it rapidly absorbs water and is used to dry gases by passing them through it. Calcium chloride is commercially available usually as the dihydrate, CaCl2·2H2O; it is used to melt ice on roads, to control dust, in brines for refrigeration, and as a preservative in foods. It is also used in the monohydrate and hexahydrate forms. Calcium chloride is a byproduct of the Solvay processSolvay process
[for Ernest Solvay], commercial process for the manufacture of sodium carbonate (washing soda). Ammonia and carbon dioxide are passed into a saturated sodium chloride solution to form soluble ammonium hydrogen carbonate, which reacts with the sodium chloride to
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 (a major source of the compound) and is present in natural brines.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Calcium Chloride


CaCl2, a salt; colorless crystals with a density of 2.51 g/cm3 and melting point of 772°C. Calcium chloride easily absorbs water vapor, subsequently deliquescing. Its solubility per 100 g H2O is 74 g at 20°C and 159 g at 100°C. Aqueous solutions of calcium chloride freeze at low temperatures (20-percent solution at — 18.5°C and 30-percent solution at — 48°C). Calcium chloride forms the hydrate CaCl2 • 6H2O, which remains stable up to 29.8°C;at high temperatures, crystalline hydrates are precipitated from the saturated solution with four, two, and one molecules of H2O. When CaCl2⋅6H2O (58.8 percent) is mixed with snow or ice (41.2 percent), the temperature drops to — 55°C (cryohydric point).

Calcium chloride is obtained as a byproduct in the manufacture of soda and is used for the preparation of calcium metal, in the drying of gases and liquids, in refrigeration, and in medicine.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

calcium chloride

[′kal·sē·əm ′klȯr‚īd]
(inorganic chemistry)
CaCl2 A colorless, deliquescent powder that is soluble in water and ethanol; used as an antifreeze and as an antidust agent.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

calcium chloride

A chemical salt used in plastic concrete as an accelerator.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Treatment 10 which was Calcium chloride at the concentration 0.1% was highly significant.
The calcium chloride from the chemical plant will be supplied mostly for the purposes of the markets of North and South America, Western Europe, Middle East, and Africa.
A solution of calcium chloride and fulvic acid and a solution of calcium chloride and humic acid were prepared.
The company has received the contract to provide engineering and project management services for the construction of USD300m soda ash and calcium chloride production facility in Jubail's Second Industrial City, the Royal Kingdom of Saudi Arabia.
To decrease the consequences of corrosion caused by chlorides when spreading roads with these mixtures, already in the 1970's the Federal Highway Administration (FHWA) of USA identified the mixture of calcium magnesium acetates as the low-corrosion chemical, compared to chlorides, alternative to rock salts and calcium chloride salts in a cold period of the year (Holleman, Wiberg 2001).
* A new QR Code-enabled website helps consumers understand why premium ice melters such as Safe Step Extreme 8300 are a better value than commodity ice melters such as calcium chloride.
That is then mixed with a calcium chloride brine to treat roads in the winter.
The targeted end use market is initially automotive, with applications foreseen as charge air coolers, exhaust mufflers, turbo air ducts, engine mounts, resonators, cylinder head covers, oil pans, EGR coolers, oil modules, thermostats, transmission components such as front covers, and radiator end tanks where calcium chloride resistance is essential to withstand road treatments.
TETRA's primary raw material to produce calcium chloride is hydrochloric acid (HCl), which is a coproduct of other chemical processes.
Headquartered in The Woodlands, Texas, Tetra is the world's largest vertically integrated producer, marketer and distributor of calcium chloride.
When the sodium alginate contacted the calcium chloride, the calcium displaced the sodium and formed a network of bonds between chains of the polysaccharide, explains McQuade.
Hydrogen Peroxide and Calcium Chloride Added to Irrigation Water as a Strategy to Reduce Bacterial Populations and Improve Quality of Fresh Mushrooms by Naveen Chikthimmah, Luke F.

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