Hyposulfite may refer to:

  • The sulfoxylate anion (SO2−
    2
    )
  • 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 thiosulfurous 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

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  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.