Cerium(III) hydroxide

Last updated
Cerium(III) oxide
IUPAC name
Cerium(III) hydroxide
Other names
Cerium trihydroxide
Cerous hydroxide
3D model (JSmol)
ECHA InfoCard 100.036.241 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 239-881-3
PubChem CID
  • InChI=1S/Ce.3H2O/h;3*1H2/q+3;;;/p-3
  • [Ce+3].[OH-].[OH-].[OH-]
Molar mass 191.148 g/mol
Appearancewhite crystals
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Cerium(III) hydroxide is a hydroxide of the rare-earth metal cerium. It is a pale white powder with the chemical formula Ce(OH)3. [1]


Cerium(III) hydroxide is prepared by the reaction of hot water at 90 °C on cerium metal:

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