hypophosphorous acid

chemical compound
ChemicalSubstance type_of_chemical_entity Q409658
Press Enter · cited answer in seconds

hypophosphorous acid

Summary

hypophosphorous acid is a type of chemical entity[1]. It ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (100 views/month).[2]

Key Facts

  • hypophosphorous acid's instance of is recorded as type of chemical entity[3].
  • hypophosphorous acid's chemical structure is recorded as Hypophosphorous-acid-2D.png[4].
  • hypophosphorous acid's CAS Registry Number is recorded as 6303-21-5[5].
  • hypophosphorous acid's EC number is recorded as 228-601-5[6].
  • hypophosphorous acid's canonical SMILES is recorded as O[PH2]=O[7].
  • hypophosphorous acid's InChI is recorded as InChI=1S/H3O2P/c1-3-2/h3H2,(H,1,2)[8].
  • hypophosphorous acid's InChIKey is recorded as ACVYVLVWPXVTIT-UHFFFAOYSA-N[9].
  • hypophosphorous acid's Library of Congress authority ID is recorded as sh2005008190[10].
  • hypophosphorous acid's chemical formula is recorded as H₃O₂P[11].
  • hypophosphorous acid's subclass of is recorded as phosphorus oxoanion[12].
  • hypophosphorous acid's Commons category is recorded as Hypophosphorous acid[13].
  • hypophosphorous acid's BNCF Thesaurus ID is recorded as 34590[14].
  • hypophosphorous acid's has part is recorded as hydrogen[15].
  • hypophosphorous acid's has part is recorded as oxygen[16].
  • hypophosphorous acid's has part is recorded as phosphorus[17].
  • hypophosphorous acid's Freebase ID is recorded as /m/07rvr1[18].
  • hypophosphorous acid's UNII is recorded as 8B1RL9B4ZJ[19].
  • hypophosphorous acid's ChemSpider ID is recorded as 10449263[20].
  • hypophosphorous acid's PubChem CID is recorded as 4124402[21].
  • hypophosphorous acid's KEGG ID is recorded as C05339[22].
  • hypophosphorous acid's ZVG number is recorded as 5210[23].
  • hypophosphorous acid's ChEBI ID is recorded as 29031[24].
  • hypophosphorous acid's Encyclopædia Britannica Online ID is recorded as science/hypophosphorous-acid[25].
  • hypophosphorous acid's Gmelin number is recorded as 25147[26].
  • hypophosphorous acid's HSDB ID is recorded as 8373[27].

Why It Matters

hypophosphorous acid ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (100 views/month).[2] It has Wikipedia articles in 24 language editions, a strong signal of global cultural recognition.[28] It is known by 23 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] . CAS Common Chemistry. Retrieved . commonchemistry.cas.org. Provenance: wikidata.org.
  4. [6] . ECHA Substance Infocard database. Retrieved . wikidata.org.
  5. [7] . PubChem. Retrieved . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . ChEBI release 2020-09-01. wikidata.org.
  8. [10] . Nuovo soggettario. Retrieved . thes.bncf.firenze.sbn.it. Provenance: wikidata.org.
  9. [11] . PubChem. Retrieved . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . Nuovo soggettario. wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . Freebase Data Dumps. wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . Q2311683. Retrieved . 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] . Hazardous Substances Data Bank. 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). hypophosphorous acid. Retrieved May 3, 2026, from https://4ort.xyz/entity/hypophosphorous-acid
MLA “hypophosphorous acid.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/hypophosphorous-acid.
BibTeX @misc{4ortxyz_hypophosphorous-acid_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{hypophosphorous acid}}, year = {2026}, url = {https://4ort.xyz/entity/hypophosphorous-acid}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): hypophosphorous acid — https://4ort.xyz/entity/hypophosphorous-acid (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/hypophosphorous-acid · Last refreshed: