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Hyposulfite
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<p>Hyposulfite may refer to: </p> <ul><li>The <a href="/facts/Sulfoxylate/bnH3c7d0">sulfoxylate</a> anion (SO2−2)</li> <li>The <a href="/facts/Thiosulfate/LYu0KhDu">thiosulfate</a> anion (S2O2−3) <ul><li><a href="/facts/Sodium_thiosulfate/qAMvfeuv">Sodium thiosulfate</a>, a salt containing the thiosulfate anion</li></ul></li> <li>S2O2−2, a reported <a href="/facts/Sulfur/IK0amTfM">sulfur</a> <a href="/facts/Oxyanion/0GuWXr6D">oxyanion</a>. However salts containing S2O2−2 and HS2O−2 are not well characterized; they would be conjugate bases derived from the parent <a href="/facts/Thiosulfurous_acid/dEyMFxlB">thiosulfurous acid</a> (H2S2O2), which is also of doubtful existence.</li> <li>Dithionite (S2O2−4) as in sodium dithionite.</li></ul>