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HomeProduct name listMagnesium bromide hexahydrate

Magnesium bromide hexahydrate

Synonym(s):Magnesium dibromide hexahydrate

  • CAS NO.:13446-53-2
  • Empirical Formula: Br2H2MgO
  • Molecular Weight: 202.13
  • MDL number: MFCD00149780
  • EINECS: 603-827-0
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-11-14 14:09:35
Magnesium bromide hexahydrate Structural

What is Magnesium bromide hexahydrate?

Chemical properties

Magnesium Bromide Hexahydrate which crystallizes from an aqueous solution at temperatures above 0°C, is highly hygroscopic and isomorphous with MgCl2·6H2O. Magnesium Bromide has two different forms - anhydrous and hexahydrate forms. It appears as white hygroscopic crystals in the anhydrous form and as colorless monoclinic crystals in the hexahydrate form.

The Uses of Magnesium bromide hexahydrate

Magnesium bromide occurs in sea water, surface and subterranean brines, and salt deposits. It is an electrolyte component in certain dry cells. In medicine, it is a sedative and anticonvulsant for treatment of nervous disorder. It also is used in organic synthesis forming several addition compounds.

Production Methods

It is also formed by the reaction of magnesium carbonate and hydrobromic acid. The solubility of magnesium bromide is 101 g/ 100 mL of water at 20 °C; the solubility of the hexahydrate is 160 g/ 100 mL of 95% ethanol at 20 °C.

Preparation

Magnesium bromide is prepared by treating MgO with hydrobromic acid and then crystallization above 0.0°C in solution. The product is the hexahydrate salt:
MgO+2HBr→MgBr2+H2O→MgBr2·6H2O
The anhydrous form may also be prepared by heating the hexahydrate with dry HBr gas. This compound can also be formed directly from the elements:
Mg+Br2→MgBr2

What are the applications of Application

Magnesium bromide hexahydrate is used as flame retardant. Used as source of magnesium ion and a co-factor for many enzymes including deoxyribonuclease (DNase) and various restriction enzymes.

Properties of Magnesium bromide hexahydrate

Melting point: 165 °C
Density  2 g/mL at 25 °C(lit.)
storage temp.  Hygroscopic, Room Temperature, under inert atmosphere
solubility  Methanol, Water
form  Crystalline Powder
color  White
Specific Gravity 2
Water Solubility  soluble
Sensitive  Hygroscopic
Stability: Very Hygroscopic
CAS DataBase Reference 13446-53-2(CAS DataBase Reference)

Safety information for Magnesium bromide hexahydrate

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P271:Use only outdoors or in a well-ventilated area.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
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 Magnesium bromide hexahydrate

InChIKey OTCKOJUMXQWKQG-UHFFFAOYSA-L

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