酸化鉄(Ⅱ)〔第一〕 化学特性,用途語,生産方法
定義
本品は、鉄の酸化物であり、ベンガラ、黄酸化鉄、黒酸化鉄などを含む。
化粧品の成分用途
着色剤
説明
When iron is heated in a low partial pressure of oxygen above 575°C,
FeO is formed. However, this is only stable at high temperatures and decomposes into iron
and Fe304 when it is cooled slowly. To obtain crystalline FeO the high temperature product
must be quenched rapidly to stop this disproportionation.
化学的特性
solid
物理的性質
Black cubic crystal; density 5.7g/cm
3; melts at 1,377°C; insoluble in water and alkalies; dissolves in acids.
天然物の起源
Iron(II) oxide occurs in the mineral, wustite. It is used in the manufacture of heat-absorbing green glasses. It also is used in ceramic mixtures and enamels; and as a catalyst.
使用
In manufacture of green, heat-absorbing glass; in steel manufacture; in enamels; as catalyst.
製造方法
Iron(II) oxide may be prepared by thermal decomposition of iron(II) oxalate:
FeC
2O
4 → FeO + CO + CO
2 The product obtained above is impure, that may contain small quantities of triiron tetroxide, Fe3O4 and carbon.
The oxide is stable above 575°C. Thus, it can be prepared by heating iron with oxygen under appropriate pressure at 575°C. Also, iron(II) oxide has been prepared by saturating the fused triiron tetroxide with iron, powdering the mixture, followed by magnetic separation of the oxide from excess iron (Sidgwick, N.V. 1950. The Chemical Elements and Their Compounds, Vol.2, pp 1328, Oxford: Clarendon Press).
酸化鉄(Ⅱ)〔第一〕 上流と下流の製品情報
原材料
準備製品