Magnesium Bromide

HCID 82241CAS 7789-48-2

Basic information

Standard SMILES
[Br-].[Br-].[Mg+2]
InChIKey
OTCKOJUMXQWKQG-UHFFFAOYSA-L
Molecular formula
Br2Mg
Average molar mass
184.11 g/mol

Overview

Magnesium bromide is a chemical compound of magnesium and bromine. It is often used as a mild sedative and as an anticonvulsant for treatment of nervous disorders. Bromine is a halogen element with the symbol Br and atomic number 35. Diatomic bromine does not occur naturally, but bromine salts can be found in crustal rock. (L625, L657)

Names & identifiers

Preferred name
Magnesium Bromide
IUPAC
magnesium dibromide
English name
Magnesium bromide
Molecular formula
Br2Mg
Molecular weight
184.11

Names & synonyms

Magnesium bromide7789-48-2MgBr2RefChem:155178DTXCID9048069232-170-92VC6P60SLNDTXSID7064865Magnesium bromide (MgBr2)Magnesium bromide, anhydrousmagnesiumbromideMagnesium Dibromide;
Show more names
finechemicalMagnesium dibromideMagnesium bromide 98 %magnesiumbromide(mgbr2)Magnesium bromide 7789-48-2Magnesiumbromide,anhydrous,98%
Br2MgMagnesiumbromidmagnesium-bromidemagnesium bromide saltmagnesium(II) bromidestarbld0009615magnesium bromide 6-hydrateSCHEMBL19000

Database identifiers

CAS
7789-48-2
PubChem CID
82241
UNII
2VC6P60SLN
EC Number
232-170-9
Nikkaji
J43.879K

Properties

Computed structural properties

Topological polar surface area
0 Ų
Hydrogen bond donors
0
Hydrogen bond acceptors
2
Rotatable bonds
0
Heavy atoms
3

Experimental & physicochemical properties

Chemical ClassesMetals -> Metals, Inorganic Compounds
CosmeticsViscosity controlling
Physical DescriptionHexahydrate: Colorless or white solid; Highly deliquescent; [Merck Index] Hygroscopic solid; [Sigma-Aldrich MSDS]

Physicochemical properties

Melting point
711 °C · 711 °C (lit.)
Boiling point
1248.47 °C · 1248.47°C (estimate)
Density
3.72 g/mL · 3.72 g/mL at 25 °C (lit.)
solubility
DMSO (Slightly, Heated), Methanol (Slightly), Water (Slightly)
form
Powder
color
off-white

Safety & regulation

GHS classification

GHS Classification · 6 items

This chemical does not meet GHS hazard criteria for 8.2% (4 of 49) of reports.

Warning

H315 (91.8%): Causes skin irritation [Warning Skin corrosion/irritation]

P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 49 reports by companies from 9 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Warning

Hazard information

Regulatory Information · 2 items

Chemical: Magnesium bromide (MgBr2)

Magnesium bromide (MgBr2): Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.

Hazards SummaryA moderate irritant; Targets the CNS and kidney; [Sigma-Aldrich MSDS] See Magnesium chloride. See Bromine.
Hazard Classes and Categories · 2 items

Skin Irrit. 2 (100%)

Skin Irrit. 2 (91.8%)

Toxicology

Treatment · 1 item

EYES: irrigate opened eyes for several minutes under running water. INGESTION: do not induce vomiting. Rinse mouth with water (never give anything by mouth to an unconscious person). Seek immediate medical advice. SKIN: should be treated immediately by rinsing the affected parts in cold running water for at least 15 minutes, followed by thorough washing with soap and water. If necessary, the person should shower and change contaminated clothing and shoes, and then must seek medical attention. INHALATION: supply fresh air. If required provide artificial respiration.

Health Effects · 1 item

Bromine vapour causes irritation and direct damage to the mucous membranes. Elemental bromine also burns the skin. The bromide ion is a central nervous system depressant and chronic exposure produces neuronal effects. This is called bromism and can result in central reactions reaching from somnolence to coma, cachexia, exicosis, loss of reflexes or pathologic reflexes, clonic seizures, tremor, ataxia, loss of neural sensitivity, paresis, papillar edema of the eyes, abnormal speech, cerebral edema, delirium, aggressiveness, and psychoses. (L625, L626, L627)

Adverse EffectsNeurotoxin - Other CNS neurotoxin
Exposure RoutesOral (L626) ; inhalation (L626) ; dermal (L626)
Toxicity Summary · 1 item

Bromine is a powerful oxidizing agent and is able to release oxygen free radicals from the water in mucous membranes. These free radicals are also potent oxidizers and produce tissue damage. In additon, the formation of hydrobromic and bromic acids will result in secondary irritation. The bromide ion is also known to affect the central nervous system, causing bromism. This is believed to be a result of bromide ions substituting for chloride ions in the in actions of neurotransmitters and transport systems, thus affecting numerous synaptic processes. (L626, L627, A543)

Signs and Symptoms · 1 item

Bromine vapour causes irritation and direct damage to the mucous membranes. Symptoms include lacrimation, rhinorrhoea, eye irritation with mucous secretions from the oropharyngeal and upper airways, coughing, dyspnoea, choking, wheezing, epistaxis, and headache. The bromide ion is a central nervous system depressant producing ataxia, slurred speech, tremor, nausea, vomiting, lethargy, dizziness, visual disturbances, unsteadiness, headaches, impaired memory and concentration, disorientation and hallucinations. This is called bromism. (L626, L627)

Safety data

PPE
dust mask type N95 (US), Eyeshields, Gloves
wgk
1
tsca
TSCA listed
hs_code
28275900
risk_code
36/37/38
Signal word
Warning

Chemistry & industry

Pharmacology

Metabolism/Metabolites · 1 item

Bromine is mainly absorbed via inhalation, but may also enter the body through dermal contact. Bromine salts can be ingested. Due to its reactivity, bromine quickly forms bromide and may be deposited in the tissues, displacing other halogens. (L626)

Uses & manufacturing

UsesUsed in organic syntheses; Has been used as a therapeutic sedative and anticonvulsant; [Merck Index]
Use ClassificationCosmetics -> Viscosity controlling
General Manufacturing InformationMagnesium bromide (MgBr2): ACTIVE
Applications · 2 items

OccurrenceMagnesium bromide occurs in seawater, some mineral springs, natural brines, inland seas and lakes such as the Dead Sea and the Great Salt Lake, and salt deposits such as the Stassfurt deposits. In seawater, it is the primary source of bromine. By the action of chlorine gas upon seawater or seawater bitterns, bromine is formed. 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.

UsesMagnesium Bromide is an inorganic salt used in the synthesis of superconductors and nanowires. Also present in polymer nanocomposites to improve conductivity.

Preparation methods · 1 item

PreparationMagnesium 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

Upstream & downstream products

Suppliers50 total

北京华美互利生物化工010-56205725 · [email protected]
上海阿拉丁生化科技股份有限公司400-6206333 13167063860 · [email protected]
湖南韵邦生物科技股份有限公司85561037 15386497078 · [email protected]
Career Henan Chemica Co+86-0371-86658258 +86-13203830695 · [email protected]
毕佳索(上海毕得医药科技股份有限公司)400-6005915 · [email protected]

Related reactions

208 records

Linked notes

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