Calcium bromide . Bromides, like chlorides, are found in nature as part of seawater and rock salt. The Bromide Calcium is an inorganic salt formed white crystals granular corresponds to formula CaBr 2 .
Summary
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- 1 Properties
- 2 Applications
- 1 Industrial Applications
- 2 Medical Applications
- 3 See also
- 4 Source
Properties
Calcium Bromide is a hydrated salt, that is, there are water molecules attached to the compound; This water constitutes between 6% and 16% of the total composition. For this reason the more general form to represent is CaBr 2 • H 2 O .
It has no odor (it is odorless), no color (it is colorless) and it has a bitter taste. It takes yellow coloring due to prolonged exposure to air. It is soluble in water and alcohol and insoluble in chloroform and ether .
It obtained by ation the Hydrogen bromide on calcium oxide , the calcium carbonate or calcium hydroxide by no redox reactions whose equations are:
2HBr (ac) + CaO (s) = CaBr 2 (ac) + H 2 O
2HBr (ac) + CaCO 3 (s) = CaBr 2 (ac) + CO 2 (g) + H 2 O
2HBr (ac) + Ca (OH) 2 (s) = CaBr 2 (ac) + 2H 2 O
The resulting substance (CaBr 2 (ac) ) is subsequently subjected to a crystallization process, consisting of evaporating the contained water until the salt is completely dry (anhydrous).
It should be stored in tightly covered jars, avoiding humidity, since it easily absorbs ambient water and hydrates.
Applications
Calcium Bromide, due to its properties, is used in both industry and medicine.
Industrial applications
- Elaboration of mineral waters.
- As a dehydrating agent.
- Food preservative.
- Refrigeration mixes.
- Wood preservatives .
Medical Applications
- Nervous sedative.