From Surf Wiki (app.surf) — the open knowledge base

Barium bromide

BaBr2·2H2O (dihydrate) 3.58 g/cm3 (dihydrate) |NFPA-H = 3 |NFPA-F = 0 |NFPA-R = 0 Barium chloride Barium iodide Magnesium bromide Calcium bromide Strontium bromide Radium bromide Lead bromide

Barium bromide is the chemical compound with the formula BaBr2. It is ionic and hygroscopic in nature.

Structure and properties

BaBr2 crystallizes in the lead chloride (cotunnite) motif, giving white orthorhombic crystals that are deliquescent.

Ion	Ba2+	Br− (tetrahedral)	Br− (trigonal)	Coordination sphere	Ball-and-stick model
{BaBr9}	{BrBa4}	{BrBa3}
[[File:Barium-bromide-xtal-Ba-coordination-3D-bs-17.png	150px]]	[[File:Barium-bromide-xtal-Br1-coordination-3D-bs-17.png	150px]]	[[File:Barium-bromide-xtal-Br2-coordination-3D-bs-17.png	150px]]
9	4	3
(7+2) coordination
distorted tricapped trigonal prismatic	distorted tetrahedral	trigonal pyramidal

In aqueous solution BaBr2 behaves as a simple salt.

Solutions of barium bromide reacts with the sulfate salts to produce a solid precipitate of barium sulfate. :BaBr2 + → BaSO4 + 2 Br− Similar reactions occur with oxalic acid, hydrofluoric acid, and phosphoric acid, giving solid precipitates of barium oxalate, fluoride, and phosphate, respectively.

Preparation

Barium bromide can be prepared by treating barium sulfide or barium carbonate with hydrobromic acid: :BaS + 2 HBr → BaBr2 + H2S :BaCO3 + 2 HBr → BaBr2 + CO2 + H2O Barium bromide crystallizes from concentrated aqueous solution in its dihydrate, BaBr2·2H2O. Heating this dihydrate to 120 °C gives the anhydrous salt. | access-date = 2007-12-03

Uses

Barium bromide is a precursor to chemicals used in photography and to other bromides. Historically, barium bromide was used to purify radium in a process of fractional crystallization devised by Marie Curie. Since radium precipitates preferentially in a solution of barium bromide, the ratio of radium to barium in the precipitate would be higher than the ratio in the solution. | author-link =Ruth Lewin Sime | access-date = 2007-12-03

Safety

Barium bromide, along with other water-soluble barium salts (e.g. barium chloride), is toxic. However, there is no conclusive data available on its hazards.https://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=en&productNumber=413607&brand=ALDRICH |

In popular culture

The compound appears in the intro title card of Breaking Bad, where the first pairs of letters are replaced with Br35 and Ba56, the symbols and atomic numbers of bromine and barium respectively.

References

(1963). "The Crystal Structures of Barium Chloride, Barium Bromide, and Barium Iodide". [[Journal of Physical Chemistry.
{{Greenwood&Earnshaw
. (1963). ["Information card for entry 1527183"](http://www.crystallography.net/cod/1527183.html). **.
. ["ICSD 15706 : ICSD Structure : Ba Br₂"](https://www.ccdc.cam.ac.uk/structures/Search?Ccdcid=1596411&DatabaseToSearch=Published). *[[Cambridge Crystallographic Data Centre]]*.
{{Greenwood&Earnshaw

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

bromides alkaline-earth-metal-halides barium-compounds

Want to explore this topic further?

Ask Mako anything about Barium bromide — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report