トリフルオロ鉄(III) 化学特性,用途語,生産方法
応用
鉄フッ化物の独特な特性はその応用範囲を非常に広くしています既に触れた電池材料や触媒としての利用に加えその他にも多くの分野で鉄フッ化物は価値を見出されています例えば光学材料としての利用ではFeF2は紫外線を効果的に吸収する能力があるためサングラスや窓ガラスのコーティング材料として研究されていますまたFeF3は磁性材料としての応用も可能であり高密度記録媒体の開発に寄与する可能性があります
化学的特性
鉄フッ化物は鉄Feとフッ素Fが結合してできる化合物で化学式はFeFFeF2などが存在しますこれらは無機化合物の一種でありその特性や用途は多岐にわたりますフッ素は非常に反応性が高い元素であるためこれらの化合物は高い化学的安定性を持ち多くの産業分野で利用されています
化学的特性
Iron(III) fluoride is only sparingly soluble in water and insoluble in alcohol and ether.
When heated in hydrogen it is reduced to iron(II) fluoride and thence to the metal. In
aqueous solution the hydrolysis appears to be very slight ; in the presence of alkali metal
fluorides, complex fluorides of types MFeF4, M2FeF5.xH2O and M3FeF6 can be crystallized.
The magnetic behaviour of FeF3 is complicated; between 63° and 293°K the
susceptibility is field strength dependent. The trihydrate has a magnetic moment μ = 2-25 B.M. at 300°K.
使用
As catalyst in organic reactions.
製造方法
This can be prepared by the action of fluorine on the metal,
iron(II), or iron(III) chloride or by dehydration of the hydrate (obtained from aqueous
solution) by heating in a current of hydrogen fluoride. A convenient laboratory preparation involves the reaction of hydrogen fluoride with anhydrous iron(III) chloride
at room temperature :
FeCl3+3HF→ FeF3+3HCl
When crystallized from aqueous solution (iron(III) "hydroxide" and aqueous hydrofluoric acid) it forms the pale pink 4?-hydrate (room temperature evaporation) and the pink 3-hydrate (evaporation by heating).
一般的な説明
IRON (II) FLUORIDE is a green crystalline solid. IRON (II) FLUORIDE is slightly soluble in water. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. IRON (II) FLUORIDE is used in ceramics.
空気と水の反応
Slightly soluble in water forming acidic solutions.
反応プロフィール
Acidic salts, such as IRON (II) FLUORIDE, 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. IRON (II) FLUORIDE is used to catalyze organic reactions.
危険性
Strong irritant.
健康ハザード
INHALATION: Inorganic fluorides are generally irritating. INGESTION: Ingestion of iron compounds can cause: lethargy, retching, vomiting, tarry stools, fast and weak pulse, low blood pressure, and coma.
火災危険
Behavior in Fire: May give off fumes or vapors of fluorides; hydrofluoric acid.
化学性质
鉄フッ化物はその組成に応じて異なる物理的および化学的特性を示しますFeF3は黄色から茶色の結晶で高い融点を持ち水には溶けにくい性質を持っています一方FeF2は無色から白い結晶でありFeF3に比べるとやや水に溶けやすいです
安全性プロファイル
Moderately toxic by
intraperitoneal route. Mutation data
reported. When heated to decomposition it
emits toxic fumes of F-. See also FLUORIDES.
参考文献
M.A. Hepworth, et al., Acta Crystallogr., 10, 63 (1957), DOI: 10.1107/S0365110X57000158.
トリフルオロ鉄(III) 上流と下流の製品情報
原材料
準備製品