Europium (III) hydroxide

Crystal structure
	__ Eu 3+ __ OH -
General
Surname	Europium (III) hydroxide
other names	Europium trihydroxide
Ratio formula	Eu (OH) 3
Brief description	white solid
External identifiers / databases
EC number	240-517-0
ECHA InfoCard	100,036,818
PubChem	85435
Wikidata	Q15628189
properties
Molar mass	202.99 g mol −1
Physical state	firmly
solubility	practically insoluble in water; sparingly soluble in strong mineral acids;
safety instructions
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Europium (III) hydroxide is an inorganic chemical compound of europium from the group of hydroxides .

Extraction and presentation

Europium (III) hydroxide can be obtained by reacting europium with water . It is also produced by the decomposition of the unstable europium (II) hydroxide hydrate.

{\ displaystyle \ mathrm {2 \ Eu + 6 \ H_ {2} O \ longrightarrow 2 \ Eu (OH) _ {3} +3 \ H_ {2}}}

Europium (III) hydroxide can also be obtained by reacting europium (III) nitrate with hexamethylenetetramine at 95 ° C or ammonium hydroxide.

properties

Europium (III) hydroxide is a white solid that is practically insoluble in water. It has a hexagonal crystal structure with the space group P 6 ₃ / m (space group no. 176) . At temperatures between 225 and 300 ° C the compound decomposes to europium oxide hydroxide EuOOH, which decomposes to europium (III) oxide at temperatures above 425 ° C.Template: room group / 176

use

Europium (III) hydroxide is used as a phosphor activator for color cathode ray tubes and liquid crystal displays.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f metall.com.cn: Europium Hydroxide 99.9% -99.999% from Metall Rare Earth Limited , accessed January 2, 2018
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
^ Leroy Eyring: Progress in the Science and Technology of the Rare Earths . Elsevier, 2016, ISBN 978-1-4831-5777-1 , pp. 455 ( limited preview in Google Book search).
↑ Handbook on the Physics and Chemistry of Rare Earths . Elsevier, 2010, ISBN 978-0-444-53591-7 , pp. 330 ( limited preview in Google Book search).
↑ Ross J. Hunter, Victor R. Preedy: Nanomedicine and the Cardiovascular System . CRC Press, 2011, ISBN 978-1-4398-7989-4 , pp. 373 ( limited preview in Google Book search).
↑ DF Mullica, WO Milligan, GW Beall: Crystal structures of Pr (OH) 3, Eu (OH) 3 and Tm (OH) 3. In: Journal of Inorganic and Nuclear Chemistry. 41, 1979, p. 525, doi : 10.1016 / 0022-1902 (79) 80438-8 .
↑ ROBERT C. RAU, WJ GLOVER: Thermal Decomposition of Europium Hydroxide. In: Journal of the American Ceramic Society. 47, 1964, p. 382, doi : 10.1111 / j.1151-2916.1964.tb13836.x .

[metall.com.cn-1] ↑ ^a ^b ^c ^d ^e ^f metall.com.cn: Europium Hydroxide 99.9% -99.999% from Metall Rare Earth Limited , accessed January 2, 2018

[NV-2] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[Leroy_Eyring-3] Leroy Eyring: Progress in the Science and Technology of the Rare Earths . Elsevier, 2016, ISBN 978-1-4831-5777-1 , pp. 455 ( limited preview in Google Book search).

[4] Handbook on the Physics and Chemistry of Rare Earths . Elsevier, 2010, ISBN 978-0-444-53591-7 , pp. 330 ( limited preview in Google Book search).

[Ross_J._Hunter,_Victor_R._Preedy-5] Ross J. Hunter, Victor R. Preedy: Nanomedicine and the Cardiovascular System . CRC Press, 2011, ISBN 978-1-4398-7989-4 , pp. 373 ( limited preview in Google Book search).

[DOI10.1016/0022-1902(79)80438-8-6] DF Mullica, WO Milligan, GW Beall: Crystal structures of Pr (OH) 3, Eu (OH) 3 and Tm (OH) 3. In: Journal of Inorganic and Nuclear Chemistry. 41, 1979, p. 525, doi : 10.1016 / 0022-1902 (79) 80438-8 .

[DOI10.1111/j.1151-2916.1964.tb13836.x-7] ROBERT C. RAU, WJ GLOVER: Thermal Decomposition of Europium Hydroxide. In: Journal of the American Ceramic Society. 47, 1964, p. 382, doi : 10.1111 / j.1151-2916.1964.tb13836.x .