iron(II) oxide

chemical compound
ChemicalSubstance type_of_chemical_entity Q196680
iron(II) oxide
http://en.wikipedia.org/w/index.php?title=User:Fuzic&action=edit · Public Domain · Wikimedia
Press Enter · cited answer in seconds

iron(II) oxide

Summary

iron(II) oxide is a type of chemical entity[1]. It ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (179 views/month).[2]

Key Facts

  • iron(II) oxide's image is recorded as Iron(II) oxide.jpg[3].
  • iron(II) oxide's instance of is recorded as type of chemical entity[4].
  • iron(II) oxide's CAS Registry Number is recorded as 1345-25-1[5].
  • iron(II) oxide's EC number is recorded as 215-721-8[6].
  • iron(II) oxide's canonical SMILES is recorded as O=[Fe][7].
  • iron(II) oxide's InChI is recorded as InChI=1S/Fe.O[8].
  • iron(II) oxide's InChIKey is recorded as UQSXHKLRYXJYBZ-UHFFFAOYSA-N[9].
  • iron(II) oxide's chemical formula is recorded as FeO[10].
  • iron(II) oxide's subclass of is recorded as iron oxide[11].
  • iron(II) oxide's has part is recorded as iron[12].
  • iron(II) oxide's has part is recorded as oxygen[13].
  • iron(II) oxide's PDB structure ID is recorded as 2YJK[14].
  • iron(II) oxide's PDB structure ID is recorded as 2YJJ[15].
  • iron(II) oxide's Freebase ID is recorded as /m/02ddb0[16].
  • iron(II) oxide's ChemSpider ID is recorded as 14237[17].
  • iron(II) oxide's PubChem CID is recorded as 14945[18].
  • iron(II) oxide's PubChem CID is recorded as 168499111[19].
  • iron(II) oxide's ZVG number is recorded as 1190[20].
  • iron(II) oxide's ChEBI ID is recorded as 50820[21].
  • iron(II) oxide's described by source is recorded as Meyers Konversations-Lexikon, 4th edition (1885–1890)[22].
  • iron(II) oxide's Encyclopædia Britannica Online ID is recorded as science/ferrous-oxide[23].
  • iron(II) oxide's Gmelin number is recorded as 13590[24].
  • iron(II) oxide's density is recorded as {'unit': 'Q13147228', 'amount': '+6.0'}[25].
  • iron(II) oxide's HSDB ID is recorded as 464[26].
  • iron(II) oxide's mass is recorded as {'unit': 'Q483261', 'amount': '+71.93'}[27].

Why It Matters

iron(II) oxide ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (179 views/month).[2] It has Wikipedia articles in 26 language editions, a strong signal of global cultural recognition.[28] It is known by 15 alternative names across languages and contexts.[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] . ChEBI. Retrieved . wikidata.org.
  4. [6] . ECHA Substance Infocard database. Retrieved . wikidata.org.
  5. [7] . PubChem. Retrieved . wikidata.org.
  6. [8] . PubChem. Retrieved . wikidata.org.
  7. [9] . PubChem. Retrieved . wikidata.org.
  8. [10] . PubChem. Retrieved . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . Protein Data Bank. Retrieved . wikidata.org.
  13. [15] . Protein Data Bank. Retrieved . wikidata.org.
  14. [16] . Freebase Data Dumps. wikidata.org.
  15. [17] . Q2311683. Retrieved . wikidata.org.
  16. [18] . PubChem. Retrieved . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . ChEBI. Retrieved . wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . CRC Handbook of Chemistry and Physics (97th edition). wikidata.org.
  24. [26] . Hazardous Substances Data Bank. Retrieved . wikidata.org.
  25. [27] . PubChem. Retrieved . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] . Wikidata sitelinks. wikidata.org.
  3. [29] . 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(II) oxide. Retrieved May 3, 2026, from https://4ort.xyz/entity/iron-ii-oxide
MLA “iron(II) oxide.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/iron-ii-oxide.
BibTeX @misc{4ortxyz_iron-ii-oxide_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{iron(II) oxide}}, year = {2026}, url = {https://4ort.xyz/entity/iron-ii-oxide}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): iron(II) oxide — https://4ort.xyz/entity/iron-ii-oxide (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/iron-ii-oxide · Last refreshed: