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硫酸钪

硫酸钪
IUPAC名
Scandium(III) sulfate
识别
CAS号 13465-61-7  ☒N
SMILES
 
  • [Sc+3].[O-]S(=O)(=O)[O-].[Sc+3].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-]
性质
化学式 Sc2(SO4)3
摩尔质量 378.09 g mol−1 g·mol⁻¹
外观 白色潮解性晶体[1]或粉末[2]
溶解性 64.6(12 °C);32.2(25 °C)
危险性
警示术语 R:R36/37/38
安全术语 S:S26, S36
NFPA 704
0
1
1
 
相关物质
其他阴离子 硒酸钪
其他阳离子 硫酸钇
硫酸镧
相关化学品 氧化钪
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

硫酸钪是一种无机化合物,化学式为Sc2(SO4)3

制备

硫酸钪可以通过蒸发硫酸硝酸钪的混合物得到。[3]

氧化钪氢氧化钪稀硫酸反应,也能制得硫酸钪:

2 Sc + 3 H2SO4 → Sc2(SO4)3 + 3 H2
Sc2O3 + 3 H2SO4 → Sc2(SO4)3 + 3 H2O

性质

硫酸钪是无色晶体,易溶于水。[4]然而,在硫酸的存在下,硫酸钪的溶解度会大大减小。[5]硫酸钪属于三方晶系空间群R3(编号148)。[6]。它在室温可以形成五水合物,100℃时脱水为二水合物。[5]它的八水合物也是已知的。[7]硫酸钪在600℃开始分解,850℃完全分解,形成氧化钪[8]

硫酸钪和六次甲基四胺在溶液中反应,可以制得碱式硫酸钪Sc(OH)2.2(SO4)0.4[9]硫酸钪和硫酸羟胺按1:1化学计量比混合后结晶,可以得到无色的三斜晶系晶体Sc(NH3OH)(SO4)2·1.5H2O。[10]

参考文献

  1. ^ Alfa Aesar: Material Safety Data Sheet
  2. ^ Sigma-Aldrich.com: Material Safety Data Sheet
  3. ^ Albert Ladenburg: Handwörten der chemie. E. Trewendt, 1892, S. 472 (eingeschränkte Vorschau in der Google-Buchsuche).
  4. ^ Eintrag zu Scandium-Verbindungen. In: Römpp Online. Georg Thieme Verlag, abgerufen am 15. September 2015.
  5. ^ 5.0 5.1 F. Wirth: Über das Sulfat und Oxalat der Scandinerde. In: Zeitschrift für anorganische Chemie. 87, 1914, S. 9, doi:10.1002/zaac.19140870104.
  6. ^ R. Blachnik: Taschenbuch für Chemiker und Physiker Band 3: Elemente, anorganische Verbindungen und Materialien, Minerale. Springer-Verlag, 2013, ISBN 978-3-642-58842-6, S. 718 (eingeschränkte Vorschau in der Google-Buchsuche).
  7. ^ Dale L. Perry: Handbook of Inorganic Compounds, Second Edition. CRC Press, 2011, ISBN 978-1-4398-1462-8, S. 357 (eingeschränkte Vorschau in der Google-Buchsuche).
  8. ^ C.T. Horovitz: Scandium Its Occurrence, Chemistry Physics, Metallurgy, Biology and Technology. Elsevier, 2012, ISBN 0-323-14451-9, S. 231 (eingeschränkte Vorschau in der Google-Buchsuche).
  9. ^ 王毅, 孙旭东, 徐鸿. 均匀沉淀法制备Sc2O3纳米粉[J]. 功能材料, 2007, 38(6):1007-1008.
  10. ^ Mirceva A, Golic L. Hydroxylammonium Scandium Sulfate Sesquihydrate, Sc(NH3OH)(SO4)2·1.5H2O. Acta Crystallographica, 1995, 51(2):175–177. DOI: 10.1107/S0108270194003203
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硫酸钪
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