Iron oxide

Iron oxide
Iron oxide pigment
Role of iron oxides

Iron oxides are chemical compounds composed of iron and oxygen. All together, there are three hundred known iron oxides and oxyhydroxides.[1]

Iron oxides and oxide-hydroxides are widespread in nature, play an important role in many geological and biological processes, and are widely utilized by humans, e.g., as iron ores, pigments, catalysts, in thermite (see the diagram). Common rust is a form of iron(III) oxide.





  • high-pressure FeOOH
  • schwertmannite (ideally Fe8O8(OH)6(SO)·nH2O or Fe3+16O16(OH,SO4)12-13·10-12H2O)[2]
  • green rusts (FeIIIxFeIIy(OH)3x+2y-z(A-)z; where A- is Cl- or 0.5SO42-)

See also


  1. ^ Cornell, RM; Schwertmann, U (2003). The iron oxides: structure, properties, reactions, occurrences and uses. Wiley VCH. ISBN 3-527-30274-3. 
  2. ^ Mindat

External links

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Look at other dictionaries:

  • iron oxide — n. any oxide of iron, esp. ferric oxide or ferrous oxide …   English World dictionary

  • Iron oxide — I ron ox ide, n. (Chem.) Any of the oxides of iron, especially {ferric oxide}. [PJC] …   The Collaborative International Dictionary of English

  • iron oxide — n any of several oxides of iron esp FERRIC OXIDE …   Medical dictionary

  • iron oxide — noun : any of several natural or synthetic oxides or hydrated oxides of iron: as a. : anhydrous or hydrated ferric oxide varying in color from red, brown, or black to orange or yellow depending in part on the degree of hydration and the purity… …   Useful english dictionary

  • Iron oxide adsorption — is a water treatment process that is used to remove arsenic from drinking water. Arsenic is a common natural contaminant of well water and is highly carcinogenic. Iron oxide adsorption treatment for arsenic in groundwater is a commonly practiced… …   Wikipedia

  • iron-oxide mask — geležies oksido kaukė statusas T sritis radioelektronika atitikmenys: angl. iron oxide mask vok. Eisenoxidmaske, f rus. шаблон из оксида железа, m pranc. masque à oxyde de fer, m …   Radioelektronikos terminų žodynas

  • iron oxide — noun The compound obtained by the reaction of oxygen on iron. Either iron(II) oxide (old term ferrous oxide, chemical formula FeO) or iron(III) oxide (old term ferric oxide, chemical formula FeO). Generally known as rust when hydrated. Syn: E172 …   Wiktionary

  • iron oxide — noun Date: 1864 any of several oxides of iron: as a. ferric oxide b. the monoxide FeO of iron …   New Collegiate Dictionary

  • iron oxide — Chem. See ferric oxide. * * * …   Universalium

  • iron oxide — i′ron ox′ide n. mir chem. ferric oxide …   From formal English to slang

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