hyposulfurous acid

== English == === Noun === hyposulfurous acid (uncountable) (inorganic chemistry) An unstable acid, H2S2O2, only known in solution, used as a reducing agent; its salts are hyposulfites). ==== Synonyms ==== hyposulphurous acid hydrosulfurous acid (archaic) hydrosulphurous acid (archaic) ==== Translations ==== === See also === thiosulfuric acid