Phosphorous acid

en

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Phosphorous acid

Quality:

Phosphonic acid - chemical compound, tautomer of phosphorous acid. Article “Phosphorous acid” in English Wikipedia has 48.9 points for quality (as of July 1, 2025). The article contains 15 references and 10 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that (English) language version.

Since the creation of article “Phosphorous acid”, its content was written by 114 registered users of English Wikipedia and edited by 536 registered Wikipedia users in all languages.

The article is cited 296 times in English Wikipedia and cited 1827 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #31767 in December 2021
  • Global: #25164 in September 2011

The highest popularity rank from 2008:

  • Local (English): #81212 in September 2011
  • Global: #82971 in September 2011

There are 27 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1English (en)
Phosphorous acid
48.884
2German (de)
Phosphonsäure
42.1319
3Italian (it)
Acido fosforoso
41.585
4Malay (ms)
Asid fosforus
34.9222
5Korean (ko)
아인산
32.7833
6Finnish (fi)
Fosforihapoke
32.7595
7Catalan (ca)
Àcid fosforós
32.4443
8Polish (pl)
Kwas fosfonowy
31.9625
9Spanish (es)
Ácido fosforoso
28.5381
10Romanian (ro)
Acid fosforos
26.4986
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Phosphorous acid" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Phosphorous acid
1 319 744
2German (de)
Phosphonsäure
441 912
3Italian (it)
Acido fosforoso
305 837
4Spanish (es)
Ácido fosforoso
280 328
5Japanese (ja)
亜リン酸
267 020
6Russian (ru)
Фосфористая кислота
222 806
7Polish (pl)
Kwas fosfonowy
179 782
8Portuguese (pt)
Ácido fosforoso
162 715
9Chinese (zh)
亞磷酸
105 189
10French (fr)
Acide phosphoreux
71 034
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Phosphorous acid" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Phosphorous acid
3 174
2German (de)
Phosphonsäure
926
3Japanese (ja)
亜リン酸
582
4Russian (ru)
Фосфористая кислота
533
5Chinese (zh)
亞磷酸
444
6Spanish (es)
Ácido fosforoso
272
7Italian (it)
Acido fosforoso
264
8Polish (pl)
Kwas fosfonowy
218
9Korean (ko)
아인산
208
10Czech (cs)
Kyselina fosforitá
186
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Phosphorous acid" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Phosphorous acid
114
2German (de)
Phosphonsäure
70
3Italian (it)
Acido fosforoso
54
4French (fr)
Acide phosphoreux
36
5Russian (ru)
Фосфористая кислота
34
6Polish (pl)
Kwas fosfonowy
31
7Vietnamese (vi)
Acid phosphorơ
28
8Chinese (zh)
亞磷酸
23
9Czech (cs)
Kyselina fosforitá
20
10Dutch (nl)
Fosforigzuur
17
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Phosphorous acid" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Arabic (ar)
حمض الفسفوروز
0
2Catalan (ca)
Àcid fosforós
0
3Czech (cs)
Kyselina fosforitá
0
4German (de)
Phosphonsäure
0
5English (en)
Phosphorous acid
0
6Spanish (es)
Ácido fosforoso
0
7Persian (fa)
فسفرو اسید
0
8Finnish (fi)
Fosforihapoke
0
9French (fr)
Acide phosphoreux
0
10Hindi (hi)
फास्फोरस अम्ल
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Phosphorous acid" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Phosphorous acid
296
2Chinese (zh)
亞磷酸
197
3Korean (ko)
아인산
128
4Japanese (ja)
亜リン酸
122
5French (fr)
Acide phosphoreux
106
6Arabic (ar)
حمض الفسفوروز
97
7Polish (pl)
Kwas fosfonowy
96
8Vietnamese (vi)
Acid phosphorơ
77
9German (de)
Phosphonsäure
74
10Serbian (sr)
Фосфораста киселина
74
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
حمض الفسفوروز
caCatalan
Àcid fosforós
csCzech
Kyselina fosforitá
deGerman
Phosphonsäure
enEnglish
Phosphorous acid
esSpanish
Ácido fosforoso
faPersian
فسفرو اسید
fiFinnish
Fosforihapoke
frFrench
Acide phosphoreux
hiHindi
फास्फोरस अम्ल
itItalian
Acido fosforoso
jaJapanese
亜リン酸
koKorean
아인산
msMalay
Asid fosforus
nlDutch
Fosforigzuur
plPolish
Kwas fosfonowy
ptPortuguese
Ácido fosforoso
roRomanian
Acid fosforos
ruRussian
Фосфористая кислота
shSerbo-Croatian
Fosforasta kiselina
simpleSimple English
Phosphorous acid
skSlovak
Kyselina fosforitá
srSerbian
Фосфораста киселина
svSwedish
Fosforsyrlighet
ukUkrainian
Фосфітна кислота
viVietnamese
Acid phosphorơ
zhChinese
亞磷酸

Popularity rank trends

Best Rank English:
#81212
09.2011
Global:
#82971
09.2011

AI rank trends

Best Rank English:
#31767
12.2021
Global:
#25164
09.2011

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Phosphonic acid from Wikipedia articles about Phosphoric acid, Hypophosphorous acid, Sarin, Phosphonate and Phosphorus. Whereas reading the article about Phosphonic acid people most often go to Wikipedia articles on Phosphoric acid, Phosphonate, Hypophosphorous acid, Phosphine and Phosphonic acid.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 15 February 2026

On 15 February 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Jeffrey Epstein, Wuthering Heights, 2026 Winter Olympics, Epstein files, Ilia Malinin, Wuthering Heights, Ghislaine Maxwell, Lucas Pinheiro Braathen, 2026 Winter Olympics medal table, Valentine's Day.

In English Wikipedia the most popular articles on that day were: Jeffrey Epstein, Wuthering Heights, Wuthering Heights (2026 film), 2026 Winter Olympics, Lucas Pinheiro Braathen, Ice hockey at the 2026 Winter Olympics – Men's tournament, Epstein files, John F. Kennedy Jr., Anthony Kim, James Van Der Beek.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information