Hyposulfite

Not to be confused with hydrosulfite, which is another name for the dithionite anion (S
2O2−
4).

Hyposulfite may refer to:

  • The thiosulfate anion (S
    2    O2−
    3    )
  • S
    2    O2−
    2    , a reported sulfur oxyanion. However salts containing S
    2    O2−
    2     and HS
    2    O−
    2     are not well characterized; they would be conjugate bases derived from the parent hyposulfurous acid (H
    2    S
    2    O
    2    ), which is also of doubtful existence.[1]
  • Dithionite (S
    2    O2−
    4    ) as in sodium dithionite.[2]

References
  1. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
  2. Williamson, Kenneth L. (1989). "Reduction of Indigo: Sodium Hydrosulfite as a Reducing Agent". Journal of Chemical Education. 66 (4): 359. Bibcode:1989JChEd..66..359W. doi:10.1021/ed066p359.2.
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