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law of definite proportions

statement that a given chemical compound always contains its elements in fixed ratio (by mass) and does not depend on its source and method of preparation
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law of definite proportions

Summary

law of definite proportions is a chemical law[1]. It has Wikipedia articles in 23 language editions, a strong signal of global cultural recognition.[2]

Key Facts

  • law of definite proportions is credited with the discovery of Joseph Proust[3].
  • law of definite proportions's instance of is recorded as chemical law[4].
  • law of definite proportions is part of ponderal laws[5].
  • law of definite proportions's time of discovery or invention is recorded as 1794[6].
  • law of definite proportions's described by source is recorded as Armenian Soviet Encyclopedia, vol. 6[7].

Body

Definition and Type

law of definite proportions's instance of is recorded as chemical law[4].

Use and Application

law of definite proportions is part of ponderal laws[5].

Why It Matters

law of definite proportions has Wikipedia articles in 23 language editions, a strong signal of global cultural recognition.[2] It is known by 18 alternative names across languages and contexts.[8]

Related Entities

Joseph Proust

References

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

Direct Wikidata claims

  1. [4] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikidata sitelinks. wikidata.org.
  2. [8] ↑ . Wikidata aliases. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). law of definite proportions. Retrieved May 3, 2026, from https://4ort.xyz/entity/law-of-definite-proportions
MLA “law of definite proportions.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/law-of-definite-proportions.
BibTeX @misc{4ortxyz_law-of-definite-proportions_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{law of definite proportions}}, year = {2026}, url = {https://4ort.xyz/entity/law-of-definite-proportions}, note = {Accessed: 2026-05-03}}
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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. 1d ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    Part of → ponderal laws
    Discoverer or inventor → Joseph Proust
    Part of → —
    Described by source → Armenian Soviet Encyclopedia, vol. 6
    + 4 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
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