四臭化炭素

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 危険有害性情報

  H302：飲み込むと有害

  H315：皮膚刺激

  H318：重篤な眼の損傷

  H335：呼吸器への刺激のおそれ

• 注意書き

  P261：粉じん/煙/ガス/ミスト/蒸気/スプレーの吸入を避ける こと。

  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。

  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。

四臭化炭素 価格

MSDS Information

• Carbon tetrabromide

四臭化炭素 化学特性,用途語,生産方法

• 外観

  白色の結晶

• 溶解性

  水に不溶, エタノール, アセトンに易溶。

• 解説

  CBr4(331.63)．CHBr3またはCS2に臭化ヨウ素を作用させて得られる．四臭化炭素は，淡黄色の固体で2形がある．α形は単斜晶系．融点90 ℃，沸点189 ℃(やや分解する)．密度2.96 g cm－3(99.5 ℃)．β形は立方晶系結晶．融点94.3 ℃．転移点46.7 ℃．正四面体構造で，原子間距離C-Br0.1942 nm．エタノール，エーテル，クロロホルムに可溶，水に不溶．有機合成の臭素化剤，半導体基板のエッチング剤，写真材料の製造などに用いられる．森北出版「化学辞典（第2版）

• 用途

  有機合成原料、電子工業材料。

• 用途

  有機合成中間体 感光性物質用

• 説明

  Carbon tetrabromide is considered a highly toxic chemical, may be fatal if inhaled, swallowed, or absorbed through skin. It is metabolized in vitro to produce carbon monoxide but the in vivo significance has not been established. Under anaerobic reducing conditions it forms complexes with ferrous cytochrome P450. Carbon monoxide is detected as a metabolic product of the interaction. Carbon tetrabromide’s production and use in organic syntheses may result in its release to the environment through various waste streams. Carbon tetrabromide has been isolated from red algae, Asparagopsis toxiformis, found in the ocean near Hawaii. It was detected in water from treated chlorinated seawater used for drinking at oil platforms. Occupational exposure to carbon tetrabromide may occur through inhalation and dermal contact with this compound at workplaces where it is produced or used. The general population may be exposed to carbon tetrabromide via ingestion of drinking water. Acute exposures to high concentrations may cause upper respiratory tract irritation and injury to lungs, liver (hepatotoxicity) and kidneys (nephrotoxicity). Chronic exposure effects at very low levels will be almost entirely limited to liver injury. It is a potent lachrymator even at low exposure concentrations. Although carbon tetrabromide may release bromine ions during metabolism, clinical bromism is not expected to occur.

• 化学的特性

  Carbon tetrabromide, is a colorless powder, white crystalline solid, or yellow-brown crystals. Slight odor

• 使用

  Carbon tetrabromide is used to a limited extent as a chemical intermediate. It has been isolated from red algae, Asparagopsis toxiformis, found in the ocean near Hawaii.

• 定義

  ChEBI: A one-carbon compound substituted by 4 bromo groups.

• 主な応用

  Carbon tetrabromide (CBr4) is a multifunctional chemical reagent widely used in chemical and pharmaceutical industries. It mainly includes:
  (1) As a thiophilic reagent, it promotes the one-pot oxidative condensation of amines with N,N'-disubstituted thioureas to give a variety of guanidine derivatives^[1].
  (2) As a bromine radical precursor, used in the electrochemical radical bromination and cyclisation sequence of enoic acid to prepare bromomethylated γ-lactone derivatives^[2].
  (3) As a precursor of hydrogen atom transfer reagent, used to generate aromatic carbonyl compounds^[3].
  (4) As raw materials or intermediates for organic synthesis. Synthesis of N-sulfonylformamidine from CBr4 and formamide under UVA irradiation. Activated imine intermediates (Vilsmeier-Haack reagent derivatives) were obtained via a photoinduced reaction between CBr4 and formamide^[4].

• 一般的な説明

  A colorless crystalline solid. Much more dense than water and insoluble in water. Toxic by ingestion. Vapors are narcotic in high concentration. Used to make other chemicals.

• 空気と水の反応

  Insoluble in water.

• 反応プロフィール

  Carbon tetrabromide is incompatible with the following: Strong oxidizers, hexacyclohexyldilead, lithium .

• 危険性

  A poison; narcotic in high concentration. Liver damage, eye, skin, and upper respiratory tract irritant.

• 健康ハザード

  Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

• 火災危険

  Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways.

• 安全性プロファイル

  Poison by subcutaneous and intravenous routes. Narcotic in high concentration. Mixture with Li particles is an impact-sensitive explosive. Explodes on contact with hexacyclohexylddead. When heated to decomposition it emits toxic fumes of Br-. See also CHLORINATED HYDROCARBONS, ALIPHATIC.

• 環境運命予測

  Carbon tetrabromide inhibits protein synthesis and causes lipid peroxidation, both of which may be involved in cell injury or death mediated by free radicals.

• 合成方法

  ブロモホルムまたは二硫化炭素と臭化ヨウ素の反応から合成される

• 輸送方法

  UN2516 Carbon tetrabromide, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.

• 純化方法

  Reactive bromide is removed from CBr4 by refluxing with dilute aqueous Na2CO3, then steam distilling, crystallising from EtOH, and drying in the dark under vacuum. [Sharpe & Walker J Chem Soc 157 1962.] It can be sublimed at 70o and low pressure. [Beilstein 1 IV 85.]

• 不和合性

  Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, lithium and hexacyclohexyldiilead, since violent reactions may occur.

• 廃棄物の処理

  Purify by distillation and return to suppliers.

四臭化炭素 上流と下流の製品情報

四臭化炭素 生産企業

Global(298)Suppliers

四臭化炭素 スペクトルデータ(¹³CNMR、IR1、IR2、IR3、MS、Raman)

558-13-4, 四臭化炭素 キーワード