Uranium (IV) sulfate

Structural formula
	No drawing available
General
Surname	Uranium (IV) sulfate
Molecular formula	U (SO 4 ) 2
Brief description	green solid (octahydrate)
External identifiers / databases
PubChem	22386258
Wikidata	Q2339326
properties
Molar mass	502.22 g mol −1 (tetrahydrate)
Physical state	firmly
density	3.6 g cm −3 (tetrahydrate)
Hazard and safety information
	; Radioactive
H and P phrases	H: 330-300-373-411
	P: ?
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Uranium (IV) sulfate is a chemical compound of uranium from the group of sulfates . In addition to this, another uranium sulfate is known, uranium (III) sulfate .

presentation

Uranium (IV) sulfate octahydrate can be obtained by cathodic reduction of uranyl sulfate UO ₂ SO ₄ .

{\ displaystyle {\ ce {UO2SO4 + H2SO4 -> U (SO4) 2. 8 H2O}}}

The tetrahydrate can be obtained by adding sulfuric acid to the solution of the octahydrate.

properties

Uranium (IV) sulfate octahydrate is a dark green solid with monoclinic prismatic crystals which, when dissolved in water, hydrolyze with the separation of the basic sulfate UOSO ₂ · 2H ₂ O. The tetrahydrate occurs as a whitish-green precipitate made up of star-shaped crystals with an orthorhombic crystal structure .

Individual evidence

↑ ^a ^b ^c ^d ^e ^f Georg Brauer (Hrsg.): Handbook of Preparative Inorganic Chemistry . 3., reworked. Edition. tape II . Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 1245 .
↑ Entry on uranium compounds in the GESTIS substance database of the IFA , accessed on February 1, 2016 (JavaScript required)
↑ Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the specified labeling it falls under the group entry uranium compounds with the exception of those specified elsewhere in this Annex in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA) , accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
↑ The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling.

[brauer-1] ↑ ^a ^b ^c ^d ^e ^f Georg Brauer (Hrsg.): Handbook of Preparative Inorganic Chemistry . 3., reworked. Edition. tape II . Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 1245 .

[GESTIS-2] Entry on uranium compounds in the GESTIS substance database of the IFA , accessed on February 1, 2016 (JavaScript required)

[CLP_100.240.790-3] Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the specified labeling it falls under the group entry uranium compounds with the exception of those specified elsewhere in this Annex in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA) , accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .

[4] The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling.