Calcium Bromide

Base Information

• Chemical Name: Calcium Bromide
• CAS No.: 7789-41-5
• Molecular Formula: CaBr2
• Molecular Weight: 199.886
• Hs Code.: 2827.59
• European Community (EC) Number: 232-164-6
• ICSC Number: 1628
• UNII: 87CNY2EEBH
• DSSTox Substance ID: DTXSID0044577
• Nikkaji Number: J43.725E
• Wikipedia: Calcium bromide,Calcium_bromide
• Wikidata: Q409739
• NCI Thesaurus Code: C76741
• ChEMBL ID: CHEMBL2105852
• Mol file: 7789-41-5.mol

Synonyms:calcium bromide

Chemical Property of Calcium Bromide

Chemical Property:

• Appearance/Colour: white powder
• Vapor Pressure: 0Pa at 25℃
• Melting Point: 730 °C
• Boiling Point: 806-812°C
• Flash Point: 806-812°C
• PSA: 0.00000
• Density: 3.353 g/cm³
• LogP: -5.99200
• Sensitive.: Hygroscopic
• Water Solubility.: Soluble in water, methanol, ethanol and acetone. Insoluble in dioxane, chloroform and ether.
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 0
• Exact Mass: 199.79722
• Heavy Atom Count: 3
• Complexity: 0

Purity/Quality:

99% ^*data from raw suppliers

Calcium bromide, anhydrous (99.5%-Ca) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 38-41
• Safety Statements: 22-24/25-39-26

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Metals -> Metals, Inorganic Compounds
• Canonical SMILES: [Ca+2].[Br-].[Br-]
• Inhalation Risk: A nuisance-causing concentration of airborne particles can be reached quickly when dispersed.
• Effects of Short Term Exposure: The substance is irritating to the eyes, skin and respiratory tract.
• Effects of Long Term Exposure: Repeated or prolonged contact with skin may cause dermatitis. Ingestion may cause effects on the central nervous system.
• 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. In photography for making dry plates and light-sensitive papers; manufacture of mineral waters, NH4Br, fire-extinguishing compositions. 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. 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.
• 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.

Technology Process of Calcium Bromide

There total 36 articles about Calcium Bromide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 92.0%

bromine (7726-95-6) + calcium hydroxide → calcium bromide (7789-41-5)

Guidance literature:

With tribromophenol; In neat (no solvent); at 600°C in presence of NaOH and Br2;; CaBr2 contaminated with CaCO3 and CaO;;

Reference yield:

calcium bromide * 3 benzyl alcohol → calcium bromide (7789-41-5) + benzyl alcohol (100-51-6,185532-71-2)

Guidance literature:

In not given; decomposition at touching the satd. solution at 32°C in its components;;

DOI:10.1039/JR9280000658

Reference yield:

bromine (7726-95-6) + calcium carbide (75-20-7) → calcium bromide (7789-41-5)

Guidance literature:

In neat (no solvent); passing of a mixture of Br2 and air over CaC2 forms CaBr2 at heating;;

DOI:10.1021/ja02159a012

upstream raw materials:

bromine

calcium

formic acid

calcium(II) oxalate

Downstream raw materials:

(+/-)-4-Bromo-2-(2,4-difluorophenyl)tetrahydrofuran

potassium bromide

sodium bromide

lithium bromide

Refernces

• 1、 Baxter,Warren. "". . p. 340. Retrieved 1911.
• 2、 Kumar, S Shyam,Ghosh, Sajal,Sahu, Manjulata,Ganesan, Rajesh. "Molar heat capacity measurement of CaHCl and CaHBr". . . Retrieved 2019.
• 3、 Wilks, W. A. R.. "". . p. 366. Retrieved 1912.
• 4、 Nair, S. M. K.,Jacob, P. Daisamma. "". . p. 69 - 76. Retrieved 1990.