Grundinformationen
- Standard-SMILES
[Br-].[Br-].[Mg+2]- InChIKey
OTCKOJUMXQWKQG-UHFFFAOYSA-L- Summenformel
- Br2Mg
- Durchschnittliche Molmasse
- 184,11 g/mol
Überblick
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)
Namen und Bezeichner
- Bevorzugter Name
- Magnesium Bromide
- IUPAC
- magnesium dibromide
- Lokaler Name
- Magnesiumbromid
- Englischer Name
- Magnesium bromide
- Summenformel
- Br2Mg
- Molmasse
- 184.11
Namen und Synonyme
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Datenbank-Bezeichner
- CAS
7789-48-2- PubChem CID
- 82241
- UNII
- 2VC6P60SLN
- EC Number
- 232-170-9
- Nikkaji
- J43.879K
Eigenschaften
Berechnete Struktureigenschaften
- Polarare Oberfläche (TPSA)
- 0 Ų
- H-Brücken-Donoren
- 0
- H-Brücken-Akzeptoren
- 2
- Frei drehbare Bindungen
- 0
- Schwere Atome
- 3
- Formalladung
- 0
- Komplexität
- 0
Experimentelle und physikochemische Eigenschaften
Physikochemische Eigenschaften
- Schmelzpunkt
- 711 °C · 711 °C (lit.)
- Siedepunkt
- 1248.47 °C · 1248.47°C (estimate)
- Dichte
- 3.72 g/mL · 3.72 g/mL at 25 °C (lit.)
- Löslichkeit
- DMSO (Slightly, Heated), Methanol (Slightly), Water (Slightly)
- Aggregatzustand
- Powder
- Farbe
- off-white
- Wichte
- 3.72 · 3.72
- Wasserlöslichkeit
- 100 g · g/100g H2O: 100.6 (25°C), 125.4 (100°C); solid phase, MgBr2 ·6H2O [KRU93]
- Merck
- 13 · 13,5681
- Stabilität
- hygroscopic
- Kosmetik-Inhaltsstoffe Funktionen
- VISCOSITY CONTROLLING
- InChI
- InChI=1S/2BrH.Mg/h2*1H;/q;;+2/p-2
- InChIKey
- OTCKOJUMXQWKQG-UHFFFAOYSA-L
- SMILES
- [Mg+2].[Br-].[Br-]
- CAS Datenbank
- 7789 · 7789-48-2(CAS DataBase Reference)
- NIST chemische Informationen
- Magnesium dibromide(7789-48-2)
- EPA chemische Informationen
- Magnesium bromide (MgBr2) (7789-48-2)
Sicherheit und Regulatorisches
GHS-Klassifizierung
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
Gefahrenhinweise
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%)
Toxikologische Informationen
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)
Sicherheitsdaten
- wgk
- 1
- tsca
- TSCA listed
- hs_code
- 28275900
- risk_code
- 36/37/38
- hazard_code
- Xi
- safety_code
- 26-36
- Speicherklasse
- 11 - Combustible Solids
Chemie und Industrie
Pharmakologische Informationen
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)
Verwendung und Herstellung
Anwendungen
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.
Darstellung
synthetischeMagnesium 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
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