Cerium hydroxide (Ce(OH)4), e mohiotia ana ano ko te cerium hydrate, he paura kowhai kowhai, he kowhai parauri ranei he pai te ahua o te mata, nga taonga hiko me nga ahuatanga catalytic. Kei te whakamahia whānuitia i roto i te hau-tairongo pūoko, pūtau wahie, nonlinear optics, whakakōkī me ētahi atu mara.
Kei te kamupene WONAIXI te patent tenenga o te tukanga whakaputa cerium hydroxide parakore teitei, a ka taea e ia te tuku ki nga kaihoko nga hua cerium hydroxide o te kounga teitei (egSO42-<100ppm, Cl -<50ppm me etahi atu) me te utu whakataetae.