also: ありんさん
noun, noun which may take the genitive case particle 'no'
phosphonic acid; phosphorous acid
Chemical term for H₃PO₃. In modern IUPAC nomenclature, 'phosphonic acid' is preferred, but 'phosphorous acid' is still widely used in older literature and some contexts. Compare with ホスホン酸, which may refer to organophosphonic acids.
See also: ホスホン酸
Phosphonic acid is sometimes used as a reducing agent.
In this reaction, a phosphonic acid ester is produced.
Standard modern spelling for phosphonic acid.
Older spelling using the traditional kanji 燐 for phosphorus; now largely replaced by リン in scientific contexts.
Compound of 亜 (a, 'sub-') + リン (rin, 'phosphorus') + 酸 (san, 'acid'), reflecting its lower oxidation state compared to phosphoric acid.