# Cerium(III) hydroxide

Last updated
Cerium(III) oxide
Names
IUPAC name
Cerium(III) hydroxide
Other names
Cerium trihydroxide
Cerous hydroxide
Identifiers
•
3D model (JSmol)
ECHA InfoCard 100.036.241
EC Number
• 239-881-3
PubChem CID
• InChI=1S/Ce.3H2O/h;3*1H2/q+3;;;/p-3
Key: UNJPQTDTZAKTFK-UHFFFAOYSA-K
• [Ce+3].[OH-].[OH-].[OH-]
Properties
Ce(OH)3
Molar mass 191.148 g/mol
Appearancewhite crystals
insoluble
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]

## Preparation

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

${\displaystyle {\ce {{2Ce}+6H2O->[{} \atop {90^{\circ }{\ce {C}}}]2Ce(OH)3(v)+3H2{\uparrow }}}}$

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