Sodium dithionate (Na₂S₂O₆) was synthesized and characterized by complementary solid‐state analyses. The obtained results enabled to describe the dehydration and decomposition phenomena under heating and reversible hydration and dehydration phenomena at relative humidity. The important role of water in the dihydrate crystalline structure is highlighted by dynamic vapor sorption (DVS) analysis, differential scanning calorimetry (DSC) analysis, and structural description.

中文翻译：

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二硫代硫酸钠及其二水合物的合成与表征

合成了二硫代硫酸钠（Na ₂ S ₂ O ₆），并通过互补的固态分析对其进行了表征。获得的结果使得能够描述在加热下的脱水和分解现象以及在相对湿度下的可逆水合作用和脱水现象。动态蒸气吸附（DVS）分析，差示扫描量热法（DSC）分析和结构说明突出了水在二水合物晶体结构中的重要作用。