砷酸钪

砷酸钪是一种无机化合物,化学式为ScAsO4。它可由硝酸钪砷酸氢二铵反应得到,[2]它的2.5水合物可从pH 2.0~7.1的溶液中沉淀出来,并于50~130 °C失去半分子水,得到ScAsO4·2H2O,在250~370 °C得到无水物。[1]其二水合物也能由氢氧化钪砷酸在25 °C反应得到。[3]它的溶度积(pKsp,c)为26.72±0.27。[4]

砷酸钪
识别
CAS号 15479-88-6(无水)  checkY
32825-50-6(二水)  checkY
性质
化学式 ScAsO4
183.88 g·mol¹
外观 白色晶体(2.5水)[1]
溶解性 难溶
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

参考文献

  1. Komissarova, L. N.; Pushkina, G. Ya.; Khrameeva, N. P. Preparation and some properties of scandium arsenate dihydrate. Zhurnal Neorganicheskoi Khimii, 1971. 16 (6): 1538-1541. ISSN: 0044-457X.
  2. Marcus Schmidt, Ulf Müller, Raul Cardoso Gil, Edgar Milke, Michael Binnewies. . Zeitschrift für anorganische und allgemeine Chemie. 2005-05, 631 (6-7): 1154–1162 [2021-09-15]. ISSN 0044-2313. doi:10.1002/zaac.200400544. (原始内容存档于2021-09-15) (德语).
  3. Ivanov-Emin, B. N.; Korotaeva, L. G.; Moskalenko, V. I.; Ezhov, A. I. Scandium arsenates. Zhurnal Neorganicheskoi Khimii, 1971. 16 (11): 2925-2928. ISSN: 0044-457X.
  4. F. Henry Firsching. . Journal of Chemical & Engineering Data. 1992-10, 37 (4): 497–499 [2021-09-15]. ISSN 0021-9568. doi:10.1021/je00008a028 (英语).
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.