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ketene

any organic compound having a carbonyl group connected by a double bond to an alkylidene group
ChemicalSubstance structural_class_of_chemical_entities Q368158
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ketene

Summary

ketene is a structural class of chemical entities[1]. ketene draws 371 Wikipedia views per month (structural_class_of_chemical_entities category, ranking #158 of 1,029).[2]

Key Facts

  • ketene's instance of is recorded as structural class of chemical entities[3].
  • ketene's canonical SMILES is recorded as []C([])=C=O[4].
  • ketene is a type of carbonyl compound[5].
  • ketene is a type of olefinic compound[6].
  • ketene's Commons category is recorded as Ketenes[7].
  • ketene's topic's main category is recorded as Category:Ketenes[8].
  • ketene's described by source is recorded as Encyclopædia Britannica 11th edition[9].
  • ketene's described by source is recorded as Armenian Soviet Encyclopedia, vol. 5[10].
  • ketene's described by source is recorded as National Encyclopedia of Uzbekistan[11].
  • ketene's different from is recorded as ketene[12].
  • ketene's different from is recorded as ketone[13].
  • ketene's associated hazard is recorded as ketene exposure[14].
  • ketene's CXSMILES is recorded as []C([])=C=O |$R;;R$|[15].

Why It Matters

ketene draws 371 Wikipedia views per month (structural_class_of_chemical_entities category, ranking #158 of 1,029).[2] ketene has Wikipedia articles in 21 language editions, a strong signal of global cultural recognition.[16]

References

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

Direct Wikidata claims

  1. [3] ↑ . Glossary of Class Names of Organic Compounds and Reactive Intermediates Based on Structure (IUPAC Recommendations 1995). wikidata.org.
  2. [4] ↑ . ChEBI release 2021-07-01. wikidata.org.
  3. [5] ↑ . Glossary of Class Names of Organic Compounds and Reactive Intermediates Based on Structure (IUPAC Recommendations 1995). wikidata.org.
  4. [6] ↑ . Glossary of Class Names of Organic Compounds and Reactive Intermediates Based on Structure (IUPAC Recommendations 1995). 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.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [16] ↑ . Wikidata sitelinks. 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). ketene. Retrieved May 3, 2026, from https://4ort.xyz/entity/ketene
MLA “ketene.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/ketene.
BibTeX @misc{4ortxyz_ketene_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{ketene}}, year = {2026}, url = {https://4ort.xyz/entity/ketene}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): ketene — https://4ort.xyz/entity/ketene (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/ketene · 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. 3d ago · InternetArchiveBot bot · 2026-05-17 view diff on Wikidata ↗
    Aliases → —
    Topic's main category → Category:Ketenes
    Subclass of → —
    Great russian encyclopedia online id (2017) → 2062120
    + 6 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-references:1||1|2 */ [[Property:P10283]]: C2778874822, Rescuing 1 sources and submitting 0 for archiving. #IABot (v2.0.9.5)"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.