hypophosphorous acid

chemical compound
ChemicalSubstance type_of_chemical_entity Q409658
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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 (550 views/month).[2]

Key Facts

  • hypophosphorous acid's instance of is recorded as type of chemical entity[3].
  • hypophosphorous acid's canonical SMILES is recorded as O[PH2]=O[4].
  • hypophosphorous acid's chemical formula is recorded as H₃O₂P[5].
  • hypophosphorous acid is a type of phosphorus oxoanion[6].
  • hypophosphorous acid's Commons category is recorded as Hypophosphorous acid[7].
  • hypophosphorous acid comprises hydrogen[8].
  • hypophosphorous acid comprises oxygen[9].
  • hypophosphorous acid comprises phosphorus[10].
  • hypophosphorous acid's mass is recorded as {'amount': '+65.987065966'}[11].
  • hypophosphorous acid's melting point is recorded as {'amount': '+26.5'}[12].
  • hypophosphorous acid's boiling point is recorded as {'amount': '+130'}[13].
  • hypophosphorous acid's permanent duplicated item is recorded as Q21086615[14].

Why It Matters

hypophosphorous acid ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (550 views/month).[2] It has Wikipedia articles in 24 language editions, a strong signal of global cultural recognition.[15] It is known by 46 alternative names across languages and contexts.[16]

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.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [15] ↑ . Wikidata sitelinks. wikidata.org.
  3. [16] ↑ . 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 October 8, 2026, from https://4ort.xyz/entity/hypophosphorous-acid
MLA “hypophosphorous acid.” 4ort.xyz Knowledge Graph, 4ort.xyz, 8 Oct. 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: 2026-10-08}}
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 2026-10-08)

Canonical URL: https://4ort.xyz/entity/hypophosphorous-acid · 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. 14d ago · KrBot bot · 2026-09-26 view diff on Wikidata ↗
    Zvg number → 5210
    "/* wbsetclaimvalue:1| */ [[Property:P679]]: 5210, см. / see [[Template:Autofix|autofix]] на / on [[Property talk:P679]]"
  2. 17d ago · Mrwdat3 · 2026-09-23 view diff on Wikidata ↗
    Zvg number → 5210
    "/* wbcreateclaim-create:1| */ [[Property:P679]]: 005210, [[:toollabs:quickstatements/#/batch/275042|batch #275042]]"
  3. 19w ago · Twofivesixbot bot · 2026-05-25 view diff on Wikidata ↗
    Boiling point → {'amount': '+130'}
    Instance of → —
    Permanent duplicated item → Q21086615
    Subclass of → phosphorus oxoanion
    + 7 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|1 */ [[Property:P8189]]: 987007535027505171, mv to monolingual text names on J9U statements"
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