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Calcium bromide

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Calcium bromide Basic information

Product Name:
Calcium bromide
CAS:
7789-41-5
MF:
Br2Ca
MW:
199.89
EINECS:
232-164-6
Mol File:
7789-41-5.mol
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Calcium bromide Chemical Properties

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
Specific Gravity
3.353
Water Solubility 
Soluble in water, methanol, ethanol and acetone. Insoluble in dioxane, chloroform and ether.
Sensitive 
Hygroscopic
Merck 
14,1654
Stability:
hygroscopic
CAS DataBase Reference
7789-41-5(CAS DataBase Reference)
NIST Chemistry Reference
Calcium dibromide(7789-41-5)
EPA Substance Registry System
Calcium bromide (CaBr2) (7789-41-5)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
38-41
Safety Statements 
22-24/25-39-26
WGK Germany 
2
RTECS 
EV9328000
TSCA 
Yes

MSDS

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Calcium bromide Usage And Synthesis

Uses

Calcium bromide (CaBr2) is used as a developer for photographic film and paper and as a dehydrating agent (drying agent), food preservative, and fire retardant.

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.

Chemical Properties

Calciumbromide, CaBr2, is a colorless crystalline solid with a melting point of 765°C. It is deliquescent and is soluble in water and absolute alcohol. Calcium bromide is used in medicine. Calcium bromide(hydrated), CaBr2·3H20, has a meiting point of 80.5℃.

Uses

In photography for making dry plates and light-sensitive papers; manufacture of mineral waters, NH4Br, fire-extinguishing compositions.

Uses

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.

Uses

Calcium bromide has a number of useful applications. Used in the oil and gas fields, the compound is a true working example. At almost every stage of the oil and gas extraction process, calcium bromide has found extensive usage. Stability, dependability and ease of use distinguish calcium bromide in the drilling process. There, it is used in “drilling muds” worldwide.

Preparation

CaBr2·2H2O has a melting point of 38°C where it dissolves in its own waters of hydration. Its density is 2.290 g/cm3. It can be prepared by reaction in solution with HBr on the carbonate:
CaCO3 (solid)+HBr (liq)→CaBr2 (liq)+ CO2 (gas)
An improve

Calcium bromide Preparation Products And Raw materials

Raw materials

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Calcium bromideSupplierMore

Tianjin Zhongxin Chemtech Co., Ltd.
Tel:
022-66880623;022-89880623
Email:
sales@tjzxchem.com;sales@tjzxchem.com
J & K SCIENTIFIC LTD.
Tel:
010-82848833- ;010-82848833-
Email:
jkinfo@jkchemical.com;market6@jkchemical.com
3B Pharmachem (Wuhan) International Co.,Ltd.
Tel:
821-50328103-801
Email:
3bsc@sina.com
Alfa Aesar
Tel:
400-610-6006; 021-67582000
Email:
saleschina@alfa-asia.com
BeiJing Hwrk Chemicals Limted
Tel:
010-57411839-
Email:
bjsales@hwrkchemical.com
Basic information Uses Safety Related Supplier