An iron oxide is a chemical compound composed of iron and oxygen. Several iron oxides are recognized. Often they are non-stoichiometric. Ferric oxyhydroxides are a related class of compounds, perhaps the best known of which is rust. [1]

Iron (III) oxide or ferric oxide is the inorganic compound with the formula Fe2O3. It occurs in nature as the mineral hematite, which serves as the primary source of iron for the steel industry. It is also known as red iron oxide, especially when used in pigments.

Iron oxides are chemical compounds. They are made of iron and oxygen. There are sixteen known iron oxides. Iron oxides are used in pigments. It is used in both man-made and natural pigments. Iron oxides are often non-stoichiometric. Ferric oxyhydroxides are a related class of compounds, perhaps the best known of which is rust. [1]

Iron (II,III) oxide, or black iron oxide, is the chemical compound with formula Fe 3 O 4. It occurs in nature as the mineral magnetite. It is one of a number of iron oxides, the others being iron (II) oxide (FeO), which is rare, and iron (III) oxide (Fe 2 O 3) which also occurs naturally as the mineral hematite.

Iron (III) oxide, also known as rust, is a reddish substance, an iron oxide. It has a chemical formula of Fe 2 O 3. It is made by the reaction of iron with oxygen. It is found naturally in the ground as hematite, the major ore which blast furnaces use to smelt iron. It dissolves in acids.

Iron oxide, also called ferric oxide is an inorganic compound with the chemical formula Fe 2 O 3. It occurs in nature very abundantly and is widely distributed. It is a chemical complex which occurs naturally comprising iron and oxygen.

2025年1月21日 · iron oxide (countable and uncountable, plural iron oxides) Either of two compounds obtained by the reaction of oxygen on iron. Generally known as rust when hydrated. Synonym: E172 (when used as a food coloring) Hyponyms: iron(II) oxide, ferrous oxide, iron(III) oxide, ferric oxide

Iron oxides are chemical compounds composed of iron and oxygen. Several iron oxides are recognized. Often they are non-stoichiometric. Ferric oxyhydroxides are a related class of compounds, perhaps the best known of which is rust.

Iron-oxide earth pigments yield ochres (yellow-browns), siennas (orange-browns), and umbers (browns). Certain compounds of chromium are used to provide chrome yellows, oranges, and greens, while various compounds of cadmium yield brilliant yellows, oranges, and reds.

2024年10月3日 · Rust is the common name of the chemical called iron oxide. Technically, it's iron oxide hydrate, because pure iron oxide isn't rust. Rusting occurs when iron or its alloys are exposed to moist air. The oxygen and water in air react with the metal to form the hydrated oxide.