7789-48-2[Br-].[Br-].[Mg+2]OTCKOJUMXQWKQG-UHFFFAOYSA-LMagnesium 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)
7789-48-2マグネシウムブロマイドは化学式がMgBr2で表される無機化合物ですこの白色または無色の固体は水に非常に溶けやすい特性を持ち多湿環境では吸湿性を示しますマグネシウムブロマイドは主に工業的な用途や化学研究において利用されています
安全情報は参考情報です。供給元の安全データシート(SDS)、適用法令、専門家による評価に代わるものではありません。
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.
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)
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)
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)
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)
解説MgBr2(184.11).水酸化マグネシウムを臭化水素酸で中和して濃縮すると六水和物が得られる.六水和物は無色の六方晶系針状晶.密度2.00 g cm-3.融点172.4 ℃.臭化マグネシウムは,臭化水素気流中で脱水し,乾燥窒素気流中で熱すると無水物となる.無水物は無色の三方晶系結晶.密度3.72 g cm-3.融点711 ℃,沸点1230 ℃.いずれも潮解性で,水に易溶.エタノール,アンモニアには付加物をつくって溶ける.有機合成,医薬品などに用いられる.[CAS 7789-48-2:MgBr2][CAS 13446-53-2:MgBr2・6H2O]森北出版「化学辞典(第2版)
用途マグネシウムブロマイドはその高い溶解度と化学的安定性のため多くの工業的応用に利用されています例えば有機合成における触媒や反応媒介としてまたは火炎抑制剤としての使用が知られていますさらに高等教育機関や研究所における化学実験において重要な試薬としても用いられます
天然物の起源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.
製造方法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
純化方法Crystallise it from EtOH or H2O (3.3g/mL). Dry it in a vacuum at ~150o, or heat the hydrate in a stream of HCl. It is very deliquescent. [Ehrlich in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 909 1963.]
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DTXSID7064865化学的特性Magnesium Bromide is a colorless, very deliquescent crystals or white solid; bitter taste. Soluble in water; slightly soluble in alcohol. It formed by reaction of magnesium carbonate and hydrobromic acid.