Category:Dithionic

Di`thi*on"ic, a. Etym: [Pref. di- + -thionic.] (Chem.)

Defn: Containing two equivalents of sulphur; as, dithionic acid. Dithionic acid (Chem.), an unstable substance, H2S2O6, known only in its solutions, and in certain well-defined salts.