Abstract

Anhydrous magnesium methanesulfonate (Mg(SO₃CH₃)₂) and calcium methanesulfonate (Ca(SO₃CH₃)₂) as well as hydrates Mg(SO₃CH₃)₂ · 2H₂O and Mg(SO₃CH₃)₂ · 12H₂O have been prepared and identified. Thermal degradation of the salts in air has been studied by thermogravimetric analysis. Parameters of phase transformations of Ca(SO₃CH₃)₂ and Mg(SO₃CH₃)₂ · 2H₂O observed at –62.7 and –119°С, respectively, have been found by differential scanning calorimetry. Melting point of Mg(SO₃CH₃)₂ · 12H₂O (45.4°С) synthesized immediately in DSC instrument because of compound instability in air has been determined. Incongruent melting has been shown for Mg(SO₃CH₃)₂ · 12H₂O.

中文翻译：

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镁磺酸钙和甲磺酸钙的相变热分析研究

摘要

无水甲磺酸镁（Mg（SO ₃ CH ₃）₂）和甲磺酸钙（Ca（SO ₃ CH ₃）₂）以及水合物Mg（SO ₃ CH ₃）₂ ·2H ₂ O和Mg（SO ₃ CH ₃）₂ ·12H ₂ ö已经制备和鉴定。通过热重分析研究了空气中盐的热降解。Ca（SO ₃ CH ₃）₂和Mg（SO ₃ CH ₃）的相变参数₂ ·2H ₂ ö观察到的在-62.7和-119°С，已经分别通过差示扫描量热找到。由于空气中化合物的不稳定性，已经确定了在DSC仪器中立即合成的Mg（SO ₃ CH ₃）₂ ·12H ₂ O（45.4°С）的熔点。已显示Mg（SO ₃ CH ₃）₂ ·12H ₂ O的熔融不一致。