Chemistry:Ammonium cerium(IV) sulfate

Ammonium cerium(IV) sulfate

Identifiers
CAS Number	10378-47-9 Y
3D model (JSmol)	Interactive image
ChemSpider	17339565 N
PubChem CID	71308344
InChI InChI=1S/Ce.4H3N.4H2O4S.2H2O/c;;;;;4*1-5(2,3)4;;/h;4*1H3;4*(H2,1,2,3,4);2*1H2/q+4;;;;;;;;;;/p-4 Key: VCNAMBGKEDPVGQ-UHFFFAOYSA-J
SMILES [Ce+4].[O-]S(=O)(=O)[O-].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.O.O.[NH4+].[NH4+].[NH4+].[NH4+]
Properties
Chemical formula	H20N4S4O18Ce
Molar mass	632.55 g/mol
Appearance	Orange-colored solid
Melting point	130 °C (266 °F; 403 K)
Solubility in water	soluble in water
Hazards
Main hazards	Irritant
GHS pictograms
GHS Signal word	Warning
GHS hazard statements	H315, H319, H335
GHS precautionary statements	P261, P262, P264, P280, P302+352, P305+351+338, P314, P362, P332+313, P337+313
NFPA 704 (fire diamond)	1 2 OX
Related compounds
Related compounds	Cerium(IV) sulfate, Ceric ammonium nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Ammonium cerium(IV) sulfate is an inorganic compound with the formula (NH₄)₄Ce(SO₄)₄·2H₂O. It is an orange-colored solid. It is a strong oxidant, the potential for reduction is about +1.44V. Cerium(IV) sulfate is a related compound.

Structure

A crystallographic study shows that the compound contains the Ce₂(SO₄)₈⁸⁻ anion, where the cerium atoms are 9 coordinated by oxygen atoms belonging to sulfate groups, in a distorted tricapped trigonal prism. The compound is thus sometimes formulated as (NH₄)₈[Ce₂(SO₄)₈]·4H₂O.