ブロモトリクロロメタン

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Warning

• 危険有害性情報

  H302：飲み込むと有害

  H315：皮膚刺激

  H319：強い眼刺激

• 注意書き

  P264：取扱い後は皮膚をよく洗うこと。

  P264：取扱い後は手や顔をよく洗うこと。

  P270：この製品を使用する時に、飲食または喫煙をしないこ と。

  P280：保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。

  P301+P312：飲み込んだ場合：気分が悪い時は医師に連絡する こと。

  P302+P352：皮膚に付着した場合：多量の水と石鹸で洗うこと。

  P305+P351+P338：眼に入った場合：水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。

ブロモトリクロロメタン 価格

MSDS Information

• Bromotrichloromethane

ブロモトリクロロメタン 化学特性,用途語,生産方法

• 外観

  無色～黄褐色, 澄明の液体

• 溶解性

  エタノール及びアセトンに極めて溶けやすく、水にほとんど溶けない。

• 使用上の注意

  紫外線により分解してヘキサクロルエタンを生ずる。塩素と光の存在で反応して四塩化炭素を生成する。

• 説明

  Bromotrichloromethane (BrCCl3) is practically insoluble in water, but it is soluble in all proportions in alcohol and ether, and miscible with many organic liquids. Uncatalyzed addition of bromotrichloromethane to ethylene can lead to violent explosion. It is frequently used in organic synthesis and as a flame retardant. The general population may be exposed to bromotrichloromethane via ingestion of food and drinking water. Bromotrichloromethane has been identified as a volatile compound in both bacon and pork. Production of bromotrichloromethane has been banned in the United States, and therefore occupational exposure would only occur when using BrCCl3 for organic synthesis. The acute lethal dose in humans is 500–5000 mg kg^-1. Inhalation of 20 000 ppm for 60 min will result in surgical anesthesia and possibly death. Based on effects in monkeys and rats, this compound may induce coma and possibly death in humans exposed to 20 000 ppm for 60 min; 10 000 ppm for 30 min will provoke marked incoordination; 2000 ppm for 5 min may produce disturbance of equilibrium. BrCCl3 exposure to cells can cause destruction of CYP450 (drug-metabolizing enzymes), making cells resistant to toxicity. This compound is considered a prolific inducer of lipid peroxidation as measured by MDA (malondialdehyde production) and 4-HNE (4-hydroxynonenal concentration).

• 化学的特性

  Clear colourless to slightly yellow liquid

• 使用

  Although bromotrichloromethane is no longer produced in the United States, it is still used in organic syntheses of various compounds.

• 危険性

  Toxic by ingestion and inhalation of fumes.

• 安全性プロファイル

  Poison by ingestion and intraperitoneal routes. Narcotic in high concentration. Mutation data reported. See also CHLOROFORM. Incompatible with ethylene. When heated to decomposition it emits very toxic fumes of Cland Br-.

• 環境運命予測

  With the loss of bromide ion, mediated by cytochrome P450 enzyme in the liver, the trichlorocarbon free radical is responsible for lipid peroxidation, which is the predominant mechanism of hepatotoxicity. BrCCl3, when metabolized in vitro and in vivo, produces phosgene (COCl2) and trichloromethyl free radicals that ultimately cause massive lipid peroxidation and depletion of cellular glutathione. Both these events contribute to toxicity. Activation of membrane phospholipase A2 has also been considered as another prime suspect contributing to toxic outcomes. It is also known to cause cerebellar degeneration in rodents. It is cytotoxic to the sperm in the testes at the time of exposure. Renal tumors are induced in male mice due to depletion of glutathione, increased lipid peroxidation, and DNA lesions.

• 純化方法

  Wash it with aqueous NaOH solution or dilute Na2CO3, then with H2O, and dry with CaCl2, BaO, MgSO4 or P2O5 before distilling in diffuse light and storing in the dark. It has also been purified by treatment with charcoal and fractional crystallisation by partial freezing. It is purified also by vigorous stirring with portions of conc H2SO4 until the acid did not discolour during several hours stirring. Wash with Na2CO3 and water, dry with CaCl2 and then illuminate it with a 1000W projection lamp at 15cm for 10hours, after making it 0.01M in bromine. Pass it through a 30 x 1.5cm column of activated alumina and fractionally redistil it through a 12-in Vigreux column (p 11). [Firestone & Willard J Am Chem Soc 83 3511 1961; see also Cadogan & Duell J Chem Soc 4154 1962, Beilstein 1 IV 77.]

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