iron(III) oxide

chemical compound
ChemicalSubstance type_of_chemical_entity Q419170
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iron(III) oxide

Summary

iron(III) oxide is a type of chemical entity[1]. It ranks in the top 3% of type_of_chemical_entity entities by monthly Wikipedia readership (1,066 views/month).[2]

Key Facts

  • iron(III) oxide's instance of is recorded as type of chemical entity[3].
  • iron(III) oxide's canonical SMILES is recorded as [Fe+3].[Fe+3].[O-2].[O-2].[O-2][4].
  • iron(III) oxide's chemical formula is recorded as Fe₂O₃[5].
  • iron(III) oxide is a type of iron oxide[6].
  • iron(III) oxide is used for food additive[7].
  • iron(III) oxide's Commons category is recorded as Iron(III) oxide[8].
  • iron(III) oxide's crystal system is recorded as trigonal crystal system[9].
  • iron(III) oxide's point group is recorded as ditrigonal scalahedral[10].
  • iron(III) oxide's space group is recorded as space group R-3c[11].
  • iron(III) oxide's described by source is recorded as Meyers Konversations-Lexikon, 4th edition (1885–1890)[12].
  • iron(III) oxide's described by source is recorded as Great Soviet Encyclopedia (1926–1947)[13].
  • iron(III) oxide's NIOSH Pocket Guide ID is recorded as 0549[14].
  • iron(III) oxide's NIOSH Pocket Guide ID is recorded as 0344[15].
  • iron(III) oxide's density is recorded as {'amount': '+5.24'}[16].
  • iron(III) oxide's mass is recorded as {'amount': '+159.85461886'}[17].
  • iron(III) oxide's melting point is recorded as {'amount': '+2664'}[18].
  • iron(III) oxide's melting point is recorded as {'amount': '+2849'}[19].
  • iron(III) oxide's boiling point is recorded as {'amount': '+1987'}[20].
  • iron(III) oxide's vapor pressure is recorded as {'amount': '+0'}[21].
  • iron(III) oxide's immediately dangerous to life or health is recorded as {'amount': '+2500'}[22].
  • iron(III) oxide's time-weighted average exposure limit is recorded as {'amount': '+5'}[23].
  • iron(III) oxide's time-weighted average exposure limit is recorded as {'amount': '+10'}[24].
  • iron(III) oxide's time-weighted average exposure limit is recorded as {'amount': '+15'}[25].
  • iron(III) oxide's has part is recorded as oxygen[26].
  • iron(III) oxide's has part is recorded as iron[27].

Body

Works and Contributions

Things named for iron(III) oxide include rust[28], a color[29].

Why It Matters

iron(III) oxide ranks in the top 3% of type_of_chemical_entity entities by monthly Wikipedia readership (1,066 views/month).[2] It has Wikipedia articles in 26 language editions, a strong signal of global cultural recognition.[30] It is known by 100 alternative names across languages and contexts.[31]

Entities named for it include rust[28], a color[29].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . wikidata.org.
  20. [22] ↑ . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.
  24. [26] ↑ . wikidata.org.
  25. [27] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [28] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [29] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [30] ↑ . Wikidata sitelinks. wikidata.org.
  3. [31] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). iron(III) oxide. Retrieved October 4, 2026, from https://4ort.xyz/entity/iron-iii-oxide
MLA “iron(III) oxide.” 4ort.xyz Knowledge Graph, 4ort.xyz, 4 Oct. 2026, https://4ort.xyz/entity/iron-iii-oxide.
BibTeX @misc{4ortxyz_iron-iii-oxide_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{iron(III) oxide}}, year = {2026}, url = {https://4ort.xyz/entity/iron-iii-oxide}, note = {Accessed: 2026-10-04}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): iron(III) oxide — https://4ort.xyz/entity/iron-iii-oxide (retrieved 2026-10-04)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 9d ago · KrBot bot · 2026-09-26 view diff on Wikidata ↗
    Zvg number → 1860
    "/* wbsetclaimvalue:1| */ [[Property:P679]]: 1860, см. / see [[Template:Autofix|autofix]] на / on [[Property talk:P679]]"
  2. 12d ago · Mrwdat3 · 2026-09-23 view diff on Wikidata ↗
    Zvg number → 1860
    "/* wbcreateclaim-create:1| */ [[Property:P679]]: 001860, [[:toollabs:quickstatements/#/batch/275042|batch #275042]]"
  3. 6w ago · Baum64 · 2026-08-23 view diff on Wikidata ↗
    Point group → ditrigonal scalahedral
    Has part(s) → —
    Has part(s) of the class → oxygen, iron
    "/* wbcreateclaim-create:1| */ [[Property:P2670]]: [[Q629]], [[:toollabs:quickstatements/#/batch/269324|batch #269324]]"
  4. 6w ago · KrBot bot · 2026-08-19 view diff on Wikidata ↗
    Crystal system → trigonal crystal system
    "/* wbsetreference-set:2| */ [[Property:P690]]: [[Q15040836]], см. / see [[Template:Autofix|autofix]] на / on [[Property talk:P356]]"
  5. 6w ago · Baum64 · 2026-08-18 view diff on Wikidata ↗
    Cod id → 1546383
    Space group → space group R-3c
    "/* wbcreateclaim-create:1| */ [[Property:P9824]]: 1546383, [[:toollabs:quickstatements/#/batch/269136|batch #269136]]"
  6. 15w ago · Nabbegat · 2026-06-19 view diff on Wikidata ↗
    Density → {'amount': '+5.24'}
    Vapor pressure → {'amount': '+0'}
    Has parts → —
    Instance of → type of chemical entity
    + 14 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update-languages-short:0||tr */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/37300|batch #37300]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.