コバルト(II)ジブロミド 化学特性,用途語,生産方法
外観
緑色, 粉末又は塊
溶解性
水に溶ける。
解説
臭化コバルト(Ⅱ),加熱したコバルトに臭素および臭化水素の混合気体を通じると無水物が得られる.緑色の結晶.密度4.91 g cm-3.融点678 ℃(窒素中).強潮解性で,水に易溶.酸化コバルト(Ⅱ)あるいは炭酸コバルト(Ⅱ)を臭化水素酸に溶かして濃縮すると六水和物が得られる.
森北出版「化学辞典(第2版)
用途
触媒原料。
化学的特性
Reddish violet crystalline powder
使用
Cobalt(II) bromide is used as a catalyst in organic synthesis. It is used as a precursor in the production of ethylsulfanyl)porphyrazinato)cobalt(II), which gives the possibility of intermolecular ferromagnetic interactions.
製造方法
Cobalt(II) bromide (CoBr2) is on its anhydrous form a green solid that is soluble in water, used primarily as a catalyst in some processes. Cobalt(II) bromide can be formed as a hydrate by the reaction of cobalt hydroxide with hydrobromic acid.
Co (OH) 2 (s)+2HBr (aq)→CoBr2.6H2O(aq)
一般的な説明
COBALT(II) BROMIDE is a red violet crystalline solid. COBALT(II) BROMIDE is soluble in water. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. COBALT(II) BROMIDE is used as a catalyst in the production of other chemicals.
空気と水の反応
Water soluble.
反応プロフィール
Acidic salts, such as COBALT(II) BROMIDE, are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions. When heated to decomposition can give off highly toxic fumes of Br [USCG, 1999].
健康ハザード
SOLID: Irritating to skin and eyes. Harmful if swallowed.
火災危険
Not flammable. POISONOUS FUMES ARE PRODUCED WHEN HEATED TO DECOMPOSITION. When heated to decomposition can give off highly toxic fumes of Br.
純化方法
Crystallise it from water (1mL/g) by partial evaporation in a desiccator. The anhydrous salt is soluble in EtOH, Me2CO, MeOAc to form blue-coloured solutions. [Glemser in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1517 1965.]
コバルト(II)ジブロミド 上流と下流の製品情報
原材料
準備製品