Chem Explorers

Unveiling the Properties and Applications of Magnesium Bromide

Magnesium Bromide: Chemical Properties and SynthesisMagnesium Bromide, a chemical compound with the molecular formula MgBr2, is a white crystalline substance formed by the reaction between Magnesium and Bromine. Beyond its use as a chemical reactant, Magnesium Bromide is critical in medicine and useful for a variety of chemical reactions, including in organic chemistry.

This article aims to explore the basic facts, chemical characteristics, and synthesis pathways of Magnesium Bromide, providing the reader with a comprehensive understanding of this important compound.

Basic facts about Magnesium Bromide

Magnesium Bromide’s chemical formula is MgBr2, which is short for Magnesium and Bromine. The IUPAC name for Magnesium Bromide is Magnesium dibromide.

Furthermore, Magnesium Bromide is an ionic compound, meaning it forms an electronic bond, a Lewis acid, a magnesium halide, an inorganic bromide, and an inorganic magnesium salt.

Physical and Chemical Properties

Magnesium Bromide is a white crystalline compound with a molar mass of 184.113 g/mol. At standard temperature and pressure, Magnesium Bromide is a solid with cubic crystal structures.

Magnesium Bromide has a melting point of 651C and a boiling point of 1150C. The molar density of Magnesium Bromide is 3.72 g/cm.

Magnesium Bromide is soluble in water, and its conductivity increases with increasing concentration, with a polarity described as polar. Magnesium Bromide’s electronic configuration is [Ne]3s2, and it has an ionic radius of 72pm.

Magnesium Bromide has an oxidation state of +2 and acts as a weak acid.


Magnesium Bromide is present in hexahydrate (MgBr2.6H2O) and decahydrate (MgBr2.10H2O) forms. Magnesium dibromide hexahydrate is typically called dibromomagnesium hexahydrate.

Magnesium dibromide decahydride is commonly referred to as dibromo magnesium decahydride.


The most common methods of Magnesium Bromide synthesis are via reaction between Hydrobromic acid and Magnesium oxide and electrolyzing Magnesium Bromide solutions. The reaction between Hydrobromic acid (HBr) and Magnesium oxide (MgO) produces Magnesium Bromide and Water (H2O).

MgO + 2HBr MgBr2 + H2O

Electrolyzing Magnesium Bromide solutions is an alternative method for synthesizing Magnesium Bromide. The magnesium and bromine ions in the Magnesium Bromide solution are separated and then allowed to combine as solid Magnesium Bromide crystals.


When Magnesium Bromide is dissolved in Water, it becomes a weak acid solution with a pH slightly less than 7. There are several reactions that Magnesium Bromide can undergo to transform into other compounds, such as sodium bromide, Sodium Carbonate and Magnesium Carbonate via reactions with bases.

Furthermore, Magnesium Bromide can react with sodium carbonate to produce magnesium oxide, carbon dioxide and sodium bromide.

2MgBr2 + Na2CO3 MgO + CO2 + 2NaBr

Magnesium Bromide also serves as a Grignard reagent used in organic synthesis reactions because of its ability to act as a nucleophile towards carbon-containing compounds.

Uses of Magnesium Bromide

One primary application of Magnesium Bromide is as a catalyst in organic reactions such as the Grignard reaction. It is also useful in the synthesis of a variety of organic compounds.

Its hydrates, Magnesium dibromide hexahydrate and Magnesium dibromide decahydrate, used in electrolytic cells, an extraction of aluminum, and various other industrial applications.


In conclusion, Magnesium Bromide is a valuable compound with diverse applications in a range of fields. Understanding its basic properties and synthesis pathways is vital, given its importance in chemical synthesis and medicine.

This article has provided an in-depth look at these aspects of Magnesium Bromide and serves as an informative resource for students, professionals, and enthusiasts alike. Properties of Magnesium Bromide in ApplicationsMagnesium Bromide, a chemical compound with the molecular formula MgBr2, has a wide range of applications due to its unique properties.

This article will delve into the properties of Magnesium Bromide in different applications, including nanowires and superconductors. Additionally, the occurrence of Magnesium Bromide in nature, and some miscellaneous facts about this substance will be discussed.

Use in Nanowires and Superconductors

One of the most prominent applications of Magnesium Bromide is in nanowires and superconductors. Nanowires are tiny wires whose diameter is on the order of a single nanometer (10-9 m) and exhibit unique properties distinct from those of bulk materials.

Researchers study nanowires to explore their unique properties and study their potential for use in novel devices such as quantum computers, solar cells, and sensors. Researchers can synthesize Magnesium Bromide nanowires using vapour-deposition onto a surface or by solution-phase nanowire synthesis methods.

Magnesium Bromide provides structural support to the nanowires as well as increases their stability and conductivity.

Magnesium Bromide is also a crucial component of some types of superconductors.

Superconductivity is the phenomenon of zero electrical resistance exhibited by certain materials at extremely low temperatures. Magnesium diboride (MgB2) is an example of a superconductor that includes Magnesium Bromide.

When Magnesium diboride is exposed to temperatures colder than 39 Kelvin (-234.15 degrees Celsius) and subjected to a sufficiently high magnetic field, it becomes a superconductor. The presence of Magnesium Bromide plays a critical role in stabilizing and reinforcing the MgB2 structure, which increases its durability and superconducting properties.

Natural Occurrence

Magnesium Bromide can also be found in nature. The primary natural source of Magnesium Bromide is bischofite, commonly found in seawater, natural springs, and carnallite.

Bischofite is a mineral composed of Magnesium Chloride and Magnesium Bromide and is commonly mined from underground deposits. Bischofite is used in many applications, including the production of Magnesium metal, antifreeze, and road salt.

Miscellaneous Facts about Magnesium Bromide

Magnesium Bromide appears as a white crystalline solid with no color. It also has no odor, making Magnesium Bromide a substance that does not release any harmful gases or fumes.

Additionally, Magnesium Bromide is non-paramagnetic, meaning it does not exhibit magnetic properties under normal circumstances. However, under certain physical conditions, the substance becomes paramagnetic, allowing researchers to manipulate it using magnetic fields.

Magnesium Bromide’s ionic conductivity is a fascinating characteristic that mainly determines its applications. When Magnesium Bromide is present in a molten state, it conducts electricity because of the free movement of the ions.

Its ability to conduct electricity is highly dependent on its chemical properties, specifically the presence of ionic bonds. Magnesium Bromide has a high ionic conductivity that contributes to its effectiveness in different applications.


In conclusion, Magnesium Bromide finds widespread use in many applications, including nanowires and superconductors. It also occurs naturally in bischofite and is odorless and non-paramagnetic, making it a desirable material to use in different processes and applications.

Magnesium Bromide demonstrates both ionic conductivity and chemical stability in its various forms, which provides researchers with much-needed flexibility when working with this substance. Magnesium Bromide’s properties and applications have been explored in this article, highlighting its usefulness in areas such as superconductivity, nanowires, and its natural occurrence in bischofite.

Various properties, including its ionic conductivity and chemical stability, have led to its widespread use in different fields. It is an odorless and non-paramagnetic substance that exhibits no color and conducts electricity in a molten state.

The cumulative information on Magnesium Bromide presented in this article underscores the substance’s importance in varied fields.


Q: What is Magnesium Bromide used for?

A: Magnesium Bromide is used in nanowires and superconductors, acts as a Grignard reagent in organic reactions, and has industrial applications such as the extraction of aluminum. Q: What is the natural occurrence of Magnesium Bromide?

A: Magnesium Bromide occurs naturally in bischofite, a mineral found in seawater, natural springs, and carnallite. Q: Can Magnesium Bromide conduct electricity?

A: Magnesium Bromide can conduct electricity in a molten state due to its ionic conductivity.

Q: Is Magnesium Bromide paramagnetic?

A: Magnesium Bromide is typically non-paramagnetic, except under certain physical conditions. Q: Does Magnesium Bromide have a color or odor?

A: Magnesium Bromide is odorless and appears white with no color.

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