nitrogen dioxide

chemical compound
ChemicalSubstance type_of_chemical_entity Q207895
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nitrogen dioxide

Summary

nitrogen dioxide is a type of chemical entity[1]. It ranks in the top 2% of type_of_chemical_entity entities by monthly Wikipedia readership (1,534 views/month).[2]

Key Facts

  • nitrogen dioxide's instance of is recorded as type of chemical entity[3].
  • nitrogen dioxide's canonical SMILES is recorded as N(=O)[O][4].
  • nitrogen dioxide's chemical formula is recorded as NO₂[5].
  • nitrogen dioxide is a type of nitrogen oxide[6].
  • nitrogen dioxide is part of response to nitrogen dioxide[7].
  • nitrogen dioxide is part of cellular response to nitrogen dioxide[8].
  • nitrogen dioxide's Commons category is recorded as Nitrogen dioxide[9].
  • nitrogen dioxide comprises nitrogen[10].
  • nitrogen dioxide comprises oxygen[11].
  • nitrogen dioxide's described by source is recorded as Brockhaus and Efron Encyclopedic Dictionary[12].
  • nitrogen dioxide's different from is recorded as Nitryl[13].
  • nitrogen dioxide's different from is recorded as nitronium ion[14].
  • nitrogen dioxide's NIOSH Pocket Guide ID is recorded as 0454[15].
  • nitrogen dioxide's density is recorded as {'unit': 'Q13147228', 'amount': '+1.44'}[16].
  • nitrogen dioxide's mass is recorded as {'unit': 'Q483261', 'amount': '+45.993'}[17].
  • nitrogen dioxide's melting point is recorded as {'unit': 'Q42289', 'amount': '+15'}[18].
  • nitrogen dioxide's boiling point is recorded as {'unit': 'Q42289', 'amount': '+70'}[19].
  • nitrogen dioxide's vapor pressure is recorded as {'unit': 'Q6859652', 'amount': '+720'}[20].
  • nitrogen dioxide's immediately dangerous to life or health is recorded as {'unit': 'Q21077820', 'amount': '+37.6'}[21].
  • nitrogen dioxide's electric dipole moment is recorded as {'unit': 'Q40603', 'amount': '+0.316'}[22].
  • nitrogen dioxide's ionization energy is recorded as {'unit': 'Q83327', 'amount': '+9.75'}[23].
  • nitrogen dioxide's ceiling exposure limit is recorded as {'unit': 'Q21077820', 'amount': '+9'}[24].
  • nitrogen dioxide's short-term exposure limit is recorded as {'unit': 'Q21077820', 'amount': '+1.8'}[25].
  • nitrogen dioxide's subject has role is recorded as photochemical oxidant[26].
  • nitrogen dioxide's standard molar entropy is recorded as {'unit': 'Q20966455', 'amount': '+240.1'}[27].

Why It Matters

nitrogen dioxide ranks in the top 2% of type_of_chemical_entity entities by monthly Wikipedia readership (1,534 views/month).[2] It has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[28] It is known by 35 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] . PubChem. Retrieved . wikidata.org.
  3. [5] . PubChem. Retrieved . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . Gene Ontology release 2020-05-02. wikidata.org.
  6. [8] . Gene Ontology release 2020-05-02. 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] . cdc.gov. cdc.gov. Provenance: wikidata.org.
  15. [17] . PubChem. Retrieved . wikidata.org.
  16. [18] . cdc.gov. cdc.gov. Provenance: wikidata.org.
  17. [19] . cdc.gov. cdc.gov. Provenance: wikidata.org.
  18. [20] . cdc.gov. cdc.gov. Provenance: wikidata.org.
  19. [21] . cdc.gov. cdc.gov. Provenance: wikidata.org.
  20. [22] . Basic laboratory and industrial chemicals: A CRC quick reference handbook. wikidata.org.
  21. [23] . Basic laboratory and industrial chemicals: A CRC quick reference handbook. cdc.gov. Provenance: wikidata.org.
  22. [24] . cdc.gov. cdc.gov. Provenance: wikidata.org.
  23. [25] . cdc.gov. cdc.gov. Provenance: wikidata.org.
  24. [26] . Medical Subject Headings. Retrieved . wikidata.org.
  25. [27] . chem.libretexts.org. Retrieved . chem.libretexts.org. Provenance: 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). nitrogen dioxide. Retrieved May 3, 2026, from https://4ort.xyz/entity/nitrogen-dioxide
MLA “nitrogen dioxide.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/nitrogen-dioxide.
BibTeX @misc{4ortxyz_nitrogen-dioxide_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{nitrogen dioxide}}, year = {2026}, url = {https://4ort.xyz/entity/nitrogen-dioxide}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): nitrogen dioxide — https://4ort.xyz/entity/nitrogen-dioxide (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/nitrogen-dioxide · 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. 2d ago · Twofivesixbot bot · 2026-05-18 view diff on Wikidata ↗
    Short-term exposure limit {'unit': 'Q21077820', 'amount': '+1.8'}
    Ceiling exposure limit {'unit': 'Q21077820', 'amount': '+9'}
    Boiling point {'unit': 'Q42289', 'amount': '+70'}
    Described by source Brockhaus and Efron Encyclopedic Dictionary
    + 23 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|6 */ [[Property:P2347]]: 18929, mv to monolingual text names on YSO statements"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.