Cerium(III) hydroxide is a

hydroxide Hydroxide is a diatomic anion with chemical formula OH−. It consists of an oxygen and hydrogen atom held together by a single covalent bond, and carries a negative electric charge. It is an important but usually minor constituent of water. It ...

of the

rare-earth metal The rare-earth elements (REE), also called the rare-earth metals or rare earths, and sometimes the lanthanides or lanthanoids (although scandium and yttrium, which do not belong to this series, are usually included as rare earths), are a set of ...

cerium Cerium is a chemical element; it has Chemical symbol, symbol Ce and atomic number 58. It is a hardness, soft, ductile, and silvery-white metal that tarnishes when exposed to air. Cerium is the second element in the lanthanide series, and while it ...

. It is a pale white powder with the chemical formula Ce(OH)₃.PubChem

Preparation

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

References

{{Hydroxides Hydroxides Cerium(III) compounds