Calcium bromide
Synonym(s):Hydrobromic acid calcium salt
- CAS NO.:7789-41-5
- Empirical Formula: Br2Ca
- Molecular Weight: 199.89
- MDL number: MFCD00010902
- EINECS: 232-164-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-05-24 15:44:31
What is Calcium bromide?
Description
Calcium bromide has the chemical formula CaBr2. It
was first prepared by Pfeiffer, Klossmann and Angern
in 1924. It is a deliquescent salt that has the form of
colorless hexagonal crystals that are soluble in water and absolute alcohol. Its molecular weight is 199.90 g/
mol for the anhydride. When strongly heated in air,
calcium bromide will produce CaO (lime) and Br2. It
is generally obtained as the dihydrate, CaBr2·2H2O,
in the form of a white crystalline powder. A hexahydrate,
CaBr2·6H2O, is also known. Anhydrous calcium
bromide is obtained by dehydration (250°C, vacuum)
of the dihydrate CaBr2·2H2O. On contact with hot
surfaces or flames, CaBr2 decomposes forming
bromine as a toxic and corrosive fume. It also reacts
with strong acids to produce corrosive fumes of
bromine.
In its solid anhydrous state, it is a white powder.
CaBr2 can be found in drilling muds, neuroses medication,
freezing mixtures, food preservatives, photography
and fire retardants. The anhydride has a melting point
of 730°C and a boiling point of 810°C where it decomposes.
Its density is 3.41 g/cm3. It is moderately soluble
in water at 142 g/100 ml of water.
The Uses of Calcium bromide
Made by the action of hydrobromic acid on calcium oxide and crystallization. The white granular crystals are soluble in water. Calcium bromide was used in making collodion emulsions, particularly for dye-sensitized plates.
Properties of Calcium bromide
Melting point: | 730°C |
Boiling point: | 806-812°C |
Density | 3.353 g/mL at 25 °C (lit.) |
Flash point: | 806-812°C |
form | beads |
color | White to off-white |
Water Solubility | Soluble in water, methanol, ethanol and acetone. Insoluble in dioxane, chloroform and ether. |
Sensitive | Hygroscopic |
Safety information for Calcium bromide
Signal word | Danger |
Pictogram(s) |
Corrosion Corrosives GHS05 |
GHS Hazard Statements |
H318:Serious eye damage/eye irritation |
Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Calcium bromide
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PACIFIC ORGANICS PVT LTD
JSK Chemicals
Global Drilling Fluids and Chemicals Limited
Agrocel Industries Pvt Ltd
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