Europium(III) hydroxide

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Europium(III) hydroxide
Europium(III) hydroxide.jpg
3D model (JSmol)
ECHA InfoCard 100.036.818 Edit this at Wikidata
EC Number
  • 240-517-0
  • InChI=1S/Eu.3H2O/h;3*1H2/q+3;;;/p-3
  • [Eu+3].[OH-].[OH-].[OH-]
Molar mass 202.988
Appearance pale pink solid[1]
Related compounds
Other anions
europium oxide
Other cations
samarium(III) hydroxide
gadolinium(III) hydroxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Europium(III) hydroxide under UV light

Europium(III) hydroxide is an inorganic compound with a chemical formula Eu(OH)3.

Chemical properties[edit]

Europium(III) hydroxide can be prepared by reacting metallic europium with water. It reacts with acids and produces europium(III) salts:

Eu(OH)3 + 3 H+ → Eu3+ + 3 H2O

Europium(III) hydroxide decomposes to EuO(OH) at elevated temperature. Further decomposition produces Eu2O3.[1]


  1. ^ a b 《无机化学丛书》. 第七卷 钪 稀土元素. 易宪武 等主编. 科学出版社. P168~171. (2)氢氧化物
  2. ^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–188. ISBN 1138561630.