Cerium(IV) sulfate
a yellow to yellow/orange solid cerium salt
Cerium(IV) sulfate, also called ceric sulfate, is an inorganic compound. It exists as the anhydrous salt Ce(SO4)2 as well as a few hydrated forms: Ce(SO4)2(H2O)x, with x equal to 4, 8, or 12. These salts are yellow to yellow/orange solids that are moderately soluble in water and dilute acids. Its neutral solutions slowly decompose, depositing the light yellow oxide CeO2. Solutions of ceric sulfate have a strong yellow color. The tetrahydrate loses water when heated to 180-200 °C.
It is insoluble in glacial acetic acid and pure (96%) ethanol.
It was historically produced by direct reaction of fine, calcined cerium(IV) oxide and concentrated sulfuric acid, yielding the tetrahydrate.
Uses
The ceric ion is a strong oxidizer, especially under acidic conditions. If ceric sulfate is added to dilute hydrochloric acid, then elemental chlorine is formed, albeit slowly. With stronger reducing agents it reacts much faster.
The public source identifies “Cerium(IV) sulfate” as a yellow to yellow/orange solid cerium salt. This brief keeps that definition visible, then builds a research path around Cerium, sulfate and yellow.
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