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Magnesiumbromid
MgBr2 · finechemical · Magnesiumbromid · MAGNESIUM BROMIDE · Magnesium dibromide · Magnesium bromide 98 % · magnesiumbromide(mgbr2) · Magnesium bromide (MgBr2)
Identifikatoren & physikalische Daten
| CAS No. | 7789-48-2 |
|---|---|
| Summenformel | Br2Mg |
| Durchschnittliche Molmasse | 184,11 g/mol |
| SMILES | [Br-].[Br-].[Mg+2] |
| InChIKey | OTCKOJUMXQWKQG-UHFFFAOYSA-L |
| PubChem CID | 82241 |
| EC No. | 232-170-9 |
| Lokaler Name | Magnesiumbromid |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 0 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 2 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 3 |
| Formalladung | 0 |
| Komplexität | 0 |
| Stoffklassen | Metals -> Metals, Inorganic Compounds |
| Kosmetika | Viscosity controlling |
| Physical Description | Hexahydrate: Colorless or white solidHighly deliquescent[Merck Index] Hygroscopic solid[Sigma-Aldrich MSDS] |
| Schmelzpunkt | 711 °C (lit.) |
| Siedepunkt | 1248.47°C (estimate) |
| Dichte | 3.72 g/mL at 25 °C (lit.) |
| Löslichkeit | DMSO (Slightly, Heated), Methanol (Slightly), Water (Slightly)g/100g H2O: 100.6 (25°C), 125.4 (100°C)solid phase, MgBr2 ·6H2O [KRU93] |
| Aggregatzustand | Powder |
| Farbe | off-white |
| Wichte | 3.72 |
| Merck | 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 | 7789-48-2(CAS DataBase Reference) |
| NIST chemische Informationen | Magnesium dibromide(7789-48-2) |
| EPA chemische Informationen | Magnesium bromide (MgBr2) (7789-48-2) |
Sicherheit & Vorschriften
| GHS-Einstufung | This chemical does not meet GHS hazard criteria for 8.2% (4 of 49) of reports.WarningH315 (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. |
|---|---|
| Regulatorische Informationen | 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. |
| Gefahrenübersicht | A moderate irritantTargets the CNS and kidney[Sigma-Aldrich MSDS] See Magnesium chloride. See Bromine. |
| Hazard Classes and Categories | Skin Irrit. 2 (100%)Skin Irrit. 2 (91.8%) |
| 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. |
| Gesundheitliche Auswirkungen | 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) |
| Unerwünschte Wirkungen | Neurotoxin - Other CNS neurotoxin |
| Expositionspfade | Oral (L626)inhalation (L626)dermal (L626) |
| Toxizitätsübersicht | 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) |
| Carcinogen Classification | No indication of carcinogenicity to humans (not listed by IARC). |
| Wassergefährdungsklasse (WGK) | 1 |
| TSCA-Inventar-Status | TSCA listed |
| Zollcode | 28275900 |
| R-Sätze (R) | 36/37/38 |
| Gefahrensymbole | Xi |
| Sicherheitshinweise (S) | 26-36 |
| Lagerklasse | 11 - Combustible Solids |
Anwendungen & Verwendung
Occurrence
Magnesium 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.
Herstellung & Synthese
synthetische
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