Uranyl sulfate

General
Surname	Uranyl sulfate
Molecular formula	(UO 2 ) SO 4
Brief description	yellow solid
External identifiers / databases
EC number	215-240-3
ECHA InfoCard	100,013,856
PubChem	14815
ChemSpider	14131
Wikidata	Q3028221
properties
Molar mass	366.091 g mol −1
Physical state	firmly
density	5.24 g cm −3 (18 ° C); 3.28 g cm −3 (trihydrate);
solubility	easily soluble in water
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 .

Uranyl sulfate is a yellow, crystalline solid and a uranyl salt of sulfuric acid with the chemical formula (UO ₂ ) SO ₄ .

Occurrence

Uranyl sulphate does not occur naturally as such. In the weathering zone of uranium ores , secondary uranyl minerals occur which crystallize out as sulfates, for example uranopilite ((UO ₂ ) ₆ SO ₄ O ₂ (OH) ₆ • 14 H ₂ O).

Extraction and presentation

Uranyl sulfate can be obtained from uranium ores ( uranium (V, VI) oxide , uranium (IV) oxide ) by reacting with sulfuric acid and oxygen .

{\ displaystyle \ mathrm {2 \ U_ {3} O_ {8} +6 \ H_ {2} SO_ {4} + O_ {2} \ longrightarrow 6 \ UO_ {2} SO_ {4} +6 \ H_ {2 } O}}

If iron-containing sulfides such as iron (II) sulfide or iron (II) disulfide occur in the uranium ores , no sulfuric acid is added, since sulfuric acid is formed at appropriately chosen temperatures; This creates the iron (III) sulfate , which serves as the starting compound .

{\ displaystyle \ mathrm {2 \ UO_ {2} + Fe_ {2} (SO_ {4}) _ {3} \ longrightarrow UO_ {2} SO_ {4} +2 \ FeSO_ {4}}}

Physical Properties

Uranyl sulfate and its trihydrate are yellow solids. Uranyl sulfate decomposes when heated above 749.85 ° C. The trihydrate crystallizes orthorhombically in the space group Pbnm (space group no. 62, position 3) . Template: room group / 62.3

use

When extracting uranium ores, uranyl sulfate, among other things , is produced in the course of producing yellow cake, depending on the process chain used.

safety instructions

All uranium compounds are toxic and radioactive. As a weak alpha emitter, absorption into the body should be avoided.

literature

Ingmar Grenthe, Janusz Drożdżynński, Takeo Fujino, Edgar C. Buck, Thomas E. Albrecht-Schmitt, Stephen F. Wolf: Uranium. In: Lester R. Morss, Norman M. Edelstein, Jean Fuger (Eds.): The Chemistry of the Actinide and Transactinide Elements. Springer, Dordrecht 2006, ISBN 1-4020-3555-1 , pp. 253-698, doi : 10.1007 / 1-4020-3598-5_5 .

Individual evidence

↑ ^a ^b ^c W. M. Haynes, David R. Lide, Thomas J. Bruno: CRC Handbook of Chemistry and Physics 2012-2013 . CRC Press, 2012, ISBN 1-4398-8049-2 , pp. 4–97 ( limited preview in Google Book Search).
↑ Gottfried Beck: Thermodynamic Relationships for the Constitution of Connections of Trivalent and Polyvalent Elements . In: Journal of Inorganic and General Chemistry . tape 174 , no. 1 , 1928, pp. 31-41 , doi : 10.1002 / zaac.19281740105 .
↑ Hans-Dieter Jakubke, Ruth Karcher (Ed.): Lexicon of Chemistry , Spectrum Academic Publishing House, Heidelberg, 2001.
↑ 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.
^ Lester R. Morss, Norman M. Edelstein, Jean Fuger (eds.): The Chemistry of the Actinide and Transactinide Elements. Springer, Dordrecht 2006, p. 291.
↑ G. Singh: Chemistry Of Lanthanides And Actinides . Discovery Publishing House, 2007, ISBN 978-81-8356-241-6 , pp. 211 ( limited preview in Google Book search).
↑ Chiranjib Gupta and Harvinderpal Singh: Uranium Resource Processing: Secondary Resources . Springer, 2003, ISBN 978-3-540-67966-0 , pp. 102 ( limited preview in Google Book search).
↑ ERC Rao, K .S. Venkateswarlu, BR Wani: Preparation and thermal stability of the U (IV) (SO4) 2-DMF complex . In: Thermochimica Acta . tape 60 , no. 3 , February 1, 1983, p. 277-286 , doi : 10.1016 / 0040-6031 (83) 80249-4 .
↑ Roger Blachnik (Ed.): Paperback for chemists and physicists . Volume III: Elements, Inorganic Compounds and Materials, Minerals . founded by Jean d'Ans, Ellen Lax. 4th, revised and revised edition. Springer, Berlin 1998, ISBN 3-540-60035-3 , pp. 786 ( limited preview in Google Book search).
↑ Donald M. Hausen: Characterizing and Classifying Uranium Yellow Cakes: A Background . In: JOM . 50, No. 12, 1998, pp. 45-47. bibcode : 1998JOM .... 50l..45H . doi : 10.1007 / s11837-998-0307-5 .

[W._M._Haynes,_David_R._Lide,_Thomas_J._Bruno-1] W. M. Haynes, David R. Lide, Thomas J. Bruno: CRC Handbook of Chemistry and Physics 2012-2013 . CRC Press, 2012, ISBN 1-4398-8049-2 , pp. 4–97 ( limited preview in Google Book Search).

[Beck-2] Gottfried Beck: Thermodynamic Relationships for the Constitution of Connections of Trivalent and Polyvalent Elements . In: Journal of Inorganic and General Chemistry . tape 174 , no. 1 , 1928, pp. 31-41 , doi : 10.1002 / zaac.19281740105 .

[LdC-3] Hans-Dieter Jakubke, Ruth Karcher (Ed.): Lexicon of Chemistry , Spectrum Academic Publishing House, Heidelberg, 2001.

[GESTIS-4] Entry on uranium compounds in the GESTIS substance database of the IFA , accessed on February 1, 2016 (JavaScript required)

[CLP_100.240.790-5] 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 .

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

[Morss-7] Lester R. Morss, Norman M. Edelstein, Jean Fuger (eds.): The Chemistry of the Actinide and Transactinide Elements. Springer, Dordrecht 2006, p. 291.

[G._Singh-8] G. Singh: Chemistry Of Lanthanides And Actinides . Discovery Publishing House, 2007, ISBN 978-81-8356-241-6 , pp. 211 ( limited preview in Google Book search).

[Chiranjib_Gupta_und_Harvinderpal_Singh-9] Chiranjib Gupta and Harvinderpal Singh: Uranium Resource Processing: Secondary Resources . Springer, 2003, ISBN 978-3-540-67966-0 , pp. 102 ( limited preview in Google Book search).

[Rao-10] ERC Rao, K .S. Venkateswarlu, BR Wani: Preparation and thermal stability of the U (IV) (SO4) 2-DMF complex . In: Thermochimica Acta . tape 60 , no. 3 , February 1, 1983, p. 277-286 , doi : 10.1016 / 0040-6031 (83) 80249-4 .

[Jean_d’Ans,_Ellen_Lax,_Roger_Blachnik-11] Roger Blachnik (Ed.): Paperback for chemists and physicists . Volume III: Elements, Inorganic Compounds and Materials, Minerals . founded by Jean d'Ans, Ellen Lax. 4th, revised and revised edition. Springer, Berlin 1998, ISBN 3-540-60035-3 , pp. 786 ( limited preview in Google Book search).

[12] Donald M. Hausen: Characterizing and Classifying Uranium Yellow Cakes: A Background . In: JOM . 50, No. 12, 1998, pp. 45-47. bibcode : 1998JOM .... 50l..45H . doi : 10.1007 / s11837-998-0307-5 .