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
Show more names
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
- Formal charge
- 0
- Complexity
- 0
Experimental & physicochemical properties
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
- Specific Gravity
- 3.72 · 3.72
- Water Solubility
- 100 g · g/100g H2O: 100.6 (25°C), 125.4 (100°C); solid phase, MgBr2 ·6H2O [KRU93]
- Merck
- 13 · 13,5681
- Stability
- hygroscopic
- Cosmetics Ingredients Functions
- VISCOSITY CONTROLLING
- InChI
- InChI=1S/2BrH.Mg/h2*1H;/q;;+2/p-2
- InChIKey
- OTCKOJUMXQWKQG-UHFFFAOYSA-L
- SMILES
- [Mg+2].[Br-].[Br-]
- CAS DataBase Reference
- 7789 · 7789-48-2(CAS DataBase Reference)
- FDA UNII
- 2 VC6P60SLN · 2VC6P60SLN
- NIST Chemistry Reference
- Magnesium dibromide(7789-48-2)
- EPA Substance Registry System
- Magnesium bromide (MgBr2) (7789-48-2)
- UNSPSC Code
- 12352302 · 12352302
- NACRES
- 23 · NA.23
- Symbol(GHS)
- 7 · GHS07
- Signal word
- Warning
- Hazard statements
- 315 · H315-H319-H335
- Precautionary statements
- 261 · P261-P271-P280
- PPE
- 95 · dust mask type N95 (US), Eyeshields, Gloves
- Hazard Codes
- Xi
- Risk Statements
- 36 · 36/37/38
- Safety Statements
- 26 · 26-36
- WGK Germany
- 1 · 1
- TSCA
- TSCA listed
- HS Code
- 28275900 · 28275900
- Storage Class
- 11 · 11 - Combustible Solids
Safety & regulation
GHS classification
GHS Classification
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
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.
Hazard Classes and Categories
Skin Irrit. 2 (100%)
Skin Irrit. 2 (91.8%)
Toxicology
Treatment
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
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)
Toxicity Summary
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
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
- Symbol(GHS)
- GHS07
- hazard_code
- Xi
- safety_code
- 26-36
- Storage Class
- 11 - Combustible Solids
- Hazard statements
- H315-H319-H335
- Precautionary statements
- P261-P271-P280
Chemistry & industry
Pharmacology
Metabolism/Metabolites
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
Applications
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
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
Upstream raw materials
Downstream products
Suppliers50 total
Related reactions
Linked notes
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