ironIIoxo
Iron(II) oxide, commonly called ferrous oxide, is a binary oxide of iron with the chemical formula FeO. In nature it occurs as the mineral wüstite and is best described as a non-stoichiometric solid, often written as Fe1−xO, with iron vacancies and lattice defects. It adopts a rock-salt crystal structure and is typically a black or dark brown powder.
FeO is stable only under reducing conditions or at high temperatures; in air it readily oxidizes to
Physical properties of FeO include a high melting point (around 1370–1400 °C) and a density near 5.7
Applications of FeO are mostly as a chemical intermediate and research material rather than a primary industrial