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Cerium(IV) sulfate



Cerium(IV) sulfate
Other names Ceric sulfate
Identifiers
CAS number 13590-82-4
Properties
Molecular formula Ce(SO4)2
Molar mass 332.24 g/mol
Appearance Yellow solid
Melting point

350 °C (dec.)

Boiling point

NA

Solubility in water Soluble in small amounts, hydrolyzes in large amounts of water
Hazards
MSDS External MSDS
Main hazards Oxidizer
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Cerium(IV) sulfate, also called ceric sulfate, is a yellow to yellow/orange chemical compound. It exists as the anhydrous salt Ce(SO4)2; a few hydrated forms are also known: Ce(SO4)2 ⋅ xH2O, with x equal to 4, 8, or 12. Ceric sulfate is available commercially.

Additional recommended knowledge

Properties

Ceric sulfate is moderately soluble in water and dilute acids. Its neutral solutions slowly decompose, due to hydrolysis of the highly-charged Ce4+ ion. These solutions deposit the light yellow oxide CeO2. Solutions of ceric sulfate have a strong yellow color.

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. For example, with sulfite in acidic environments it reacts quickly and completely.

When ceric compounds are reduced, so-called cerous compounds are formed. The reaction taking place is: Ce4+ + e → Ce3+. The cerous ion is colorless.

Ceric sulfate is used in analytical chemistry for redox titration, often together with a redox indicator.

References

 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Cerium(IV)_sulfate". A list of authors is available in Wikipedia.
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