<p><b>硫代硫酸鉀</b>是一種無機化合物，化學式為K<sub>2</sub>S<sub>2</sub>O<sub>3</sub>。可以用於製備其它硫代硫酸根配合物，或用作提供鉀和硫的肥料。它可以由碳酸鉀和硫反應得到：</p>
<dl><dd>3 K<sub>2</sub>CO<sub>3</sub> + 8 S → K<sub>2</sub>S<sub>2</sub>O<sub>3</sub> + 2 K<sub>2</sub>S<sub>3</sub> + 3 CO<sub>2</sub></dd></dl><p>無水硫代硫酸鉀是單斜晶系的晶體，空間群<i>P</i>2<sub>1</sub>/c。它也能形成1/3水合物。</p>
<h2><span id=".E5.8F.82.E8.80.83.E6.96.87.E7.8C.AE"></span><span id="参考文献">參考文獻</span></h2>

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**硫代硫酸鉀**是一種無機化合物，化學式為 K2S2O3。可以用於製備其它硫代硫酸根配合物，或用作提供鉀和硫的肥料。它可以由碳酸鉀和硫反應得到：

　
: 3 K2CO3 + 8 S → K2S2O3 + 2 K2S3 + 3 CO2

無水硫代硫酸鉀是單斜晶系的晶體，空間群 _P_21/c。它也能形成 1/3 水合物。

## 參考文獻
10294-66-3