nitrous acid

chemical compound
ChemicalSubstance type_of_chemical_entity Q211891
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nitrous acid

Summary

nitrous acid is a type of chemical entity[1]. It ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (167 views/month).[2]

Key Facts

  • nitrous acid's instance of is recorded as type of chemical entity[3].
  • nitrous acid's chemical structure is recorded as Salpetrige Säure.png[4].
  • nitrous acid's GND ID is recorded as 4178975-1[5].
  • nitrous acid's CAS Registry Number is recorded as 7782-77-6[6].
  • nitrous acid's EC number is recorded as 231-963-7[7].
  • nitrous acid's canonical SMILES is recorded as N(=O)O[8].
  • nitrous acid's InChI is recorded as InChI=1S/HNO2/c2-1-3/h(H,2,3)[9].
  • nitrous acid's InChIKey is recorded as IOVCWXUNBOPUCH-UHFFFAOYSA-N[10].
  • nitrous acid's Library of Congress authority ID is recorded as sh85092096[11].
  • nitrous acid's chemical formula is recorded as HNO₂[12].
  • nitrous acid's subclass of is recorded as monoprotic acid[13].
  • nitrous acid's subclass of is recorded as mineral acid[14].
  • nitrous acid's subclass of is recorded as nitrogen oxoacid[15].
  • nitrous acid's Commons category is recorded as Nitrous acid[16].
  • nitrous acid's MeSH descriptor ID is recorded as D009608[17].
  • nitrous acid's BNCF Thesaurus ID is recorded as 37367[18].
  • nitrous acid's has part is recorded as nitrogen[19].
  • nitrous acid's has part is recorded as hydrogen[20].
  • nitrous acid's has part is recorded as oxygen[21].
  • nitrous acid's ChEMBL ID is recorded as CHEMBL1161681[22].
  • nitrous acid's Freebase ID is recorded as /m/021d3p[23].
  • nitrous acid's UNII is recorded as T2I5UM75DN[24].
  • nitrous acid's ChemSpider ID is recorded as 22936[25].
  • nitrous acid's PubChem CID is recorded as 24529[26].
  • nitrous acid's KEGG ID is recorded as C00088[27].

Why It Matters

nitrous acid ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (167 views/month).[2] It has Wikipedia articles in 25 language editions, a strong signal of global cultural recognition.[28] It is known by 14 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] . ChEBI. Retrieved . commonchemistry.cas.org. Provenance: wikidata.org.
  5. [7] . Global Substance Registration System. Retrieved . wikidata.org.
  6. [8] . PubChem. Retrieved . wikidata.org.
  7. [9] . PubChem. Retrieved . wikidata.org.
  8. [10] . PubChem. Retrieved . wikidata.org.
  9. [11] . Integrated Authority File. wikidata.org.
  10. [12] . PubChem. Retrieved . 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] . ChEMBL. Retrieved . wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . Global Substance Registration System. Retrieved . wikidata.org.
  23. [25] . Q2311683. Retrieved . wikidata.org.
  24. [26] . PubChem. Retrieved . wikidata.org.
  25. [27] . ChEBI. 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). nitrous acid. Retrieved May 3, 2026, from https://4ort.xyz/entity/nitrous-acid
MLA “nitrous acid.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/nitrous-acid.
BibTeX @misc{4ortxyz_nitrous-acid_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{nitrous acid}}, year = {2026}, url = {https://4ort.xyz/entity/nitrous-acid}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): nitrous acid — https://4ort.xyz/entity/nitrous-acid (retrieved 2026-05-03)

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