calcium oxide

chemical compound
ChemicalSubstance type_of_chemical_entity Q185006
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calcium oxide

Summary

calcium oxide is a type of chemical entity[1]. It ranks in the top 2% of type_of_chemical_entity entities by monthly Wikipedia readership (21,613 views/month).[2]

Key Facts

  • calcium oxide's instance of is recorded as type of chemical entity[3].
  • calcium oxide's canonical SMILES is recorded as O=[Ca][4].
  • calcium oxide's chemical formula is recorded as CaO[5].
  • calcium oxide is a type of chemical compound[6].
  • calcium oxide's Commons category is recorded as Calcium oxide[7].
  • calcium oxide comprises calcium[8].
  • calcium oxide comprises oxygen[9].
  • calcium oxide's described by source is recorded as Armenian Soviet Encyclopedia, vol. 5[10].
  • calcium oxide's has effect is recorded as calcium oxide exposure[11].
  • calcium oxide's different from is recorded as lime (mineral)[12].
  • calcium oxide's NIOSH Pocket Guide ID is recorded as 0093[13].
  • calcium oxide's density is recorded as {'amount': '+3.34'}[14].
  • calcium oxide's mass is recorded as {'amount': '+55.958'}[15].
  • calcium oxide's melting point is recorded as {'amount': '+4662'}[16].
  • calcium oxide's melting point is recorded as {'amount': '+2570'}[17].
  • calcium oxide's melting point is recorded as {'amount': '+2927'}[18].
  • calcium oxide's boiling point is recorded as {'amount': '+5162'}[19].
  • calcium oxide's boiling point is recorded as {'amount': '+2850'}[20].
  • calcium oxide's vapor pressure is recorded as {'amount': '+0'}[21].
  • calcium oxide's immediately dangerous to life or health is recorded as {'amount': '+25'}[22].
  • calcium oxide's ionization energy is recorded as {'amount': '+6.90'}[23].
  • calcium oxide's time-weighted average exposure limit is recorded as {'amount': '+2'}[24].
  • calcium oxide's time-weighted average exposure limit is recorded as {'amount': '+5'}[25].
  • calcium oxide's subject has role is recorded as dental material[26].
  • calcium oxide's standard enthalpy of formation is recorded as {'amount': '-635.09'}[27].

Why It Matters

calcium oxide ranks in the top 2% of type_of_chemical_entity entities by monthly Wikipedia readership (21,613 views/month).[2] It has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[28] It is known by 136 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] ↑ . 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.

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). calcium oxide. Retrieved October 2, 2026, from https://4ort.xyz/entity/calcium-oxide
MLA “calcium oxide.” 4ort.xyz Knowledge Graph, 4ort.xyz, 2 Oct. 2026, https://4ort.xyz/entity/calcium-oxide.
BibTeX @misc{4ortxyz_calcium-oxide_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{calcium oxide}}, year = {2026}, url = {https://4ort.xyz/entity/calcium-oxide}, note = {Accessed: 2026-10-02}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): calcium oxide — https://4ort.xyz/entity/calcium-oxide (retrieved 2026-10-02)

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

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 → 1200
    "/* wbsetclaimvalue:1| */ [[Property:P679]]: 1200, см. / see [[Template:Autofix|autofix]] на / on [[Property talk:P679]]"
  2. 12d ago · Mrwdat3 · 2026-09-23 view diff on Wikidata ↗
    Zvg number → 1200
    "/* wbcreateclaim-create:1| */ [[Property:P679]]: 001200, [[:toollabs:quickstatements/#/batch/275042|batch #275042]]"
  3. 15w ago · Nabbegat · 2026-06-19 view diff on Wikidata ↗
    Has effect → calcium oxide exposure
    Instance of → type of chemical entity
    Subclass of → —
    Subclass of → chemical compound
    + 19 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.