Praseodymium (III) oxide

Structural formula
	__ Pr 3+ __ O 2−
General
Surname	Praseodymium (III) oxide
other names	Dipraseodymium trioxide; Praseodymium sesquioxide;
Molecular formula	Pr 2 O 3
Brief description	yellow-green powder
External identifiers / databases
EC number	234-845-3
ECHA InfoCard	100,031,665
PubChem	165911
Wikidata	Q420890
properties
Molar mass	329.81 g mol −1
Physical state	firmly
density	6.9 g cm −3
Melting point	2183 ° C
boiling point	3760 ° C
solubility	almost insoluble in water
safety instructions
GHS labeling of hazardous substances	no GHS pictograms
	no GHS pictograms
H and P phrases	H: no H-phrases
	P: no P-phrases
Toxicological data	> 5000 mg kg −1 ( LD 50 , rat , oral )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Praseodymium (III) oxide is a chemical compound from the group of oxides .

Extraction and presentation

Like praseodymium (IV) oxide PrO _2, praseodymium (III) oxide can be obtained by reacting praseodymium with oxygen .

{\ displaystyle \ mathrm {4 \ Pr + 3 \ O_ {2} \ longrightarrow 2 \ Pr_ {2} O_ {3}}}

It can also be obtained by reducing the black praseodymium (III, IV) oxide Pr ₆ O ₁₁ with hydrazine or by dehydrating praseodymium (III) hydroxide.

{\ displaystyle \ mathrm {2 \ Pr (OH) _ {3} \ longrightarrow \ Pr_ {2} O_ {3} \ + \ 3 \ H_ {2} O}}

properties

Praseodymium (III) oxide is a yellow powder that is insoluble in water. It comes in both a white hexagonal shape and a yellow to green cubic crystal structure. In moist conditions it reacts quickly to form praseodymium (III) hydroxide .

use

Praseodymium (III) oxide is used to color glass and ceramics. It is also being studied as a material for semiconductor devices.

Individual evidence

↑ ^a ^b ESPI Metals: Praseodymium Oxide ( Memento from January 22, 2013 in the web archive archive.today )
↑ ^a ^b ^c ^d David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-84.
↑ ^a ^b ^c data sheet Praseodymium (III) oxide, 99.9% trace metals basis from Sigma-Aldrich , accessed on February 10, 2019 ( PDF ).
^ ^A ^b ^c Robert E. Krebs: The history and use of our earth's chemical elements: a reference guide . Greenwood Pub Group, 2006, ISBN 978-0-313-33438-2 , pp. 283 ( limited preview in Google Book search).
↑ Inorganic Syntheses . Wiley-Interscience, 2006, ISBN 978-0-470-13268-5 , pp. 39 ( limited preview in Google Book search).
^ Jarek Dąbrowski, Eicke R. Weber: Predictive simulation of semiconductor processing: status and challenges . S. 266 ( limited preview in Google Book search).
^ BL Treu, WG Fahrenholtz, MJ O'Keefe: ECS transactions . Electrochemical Society, 2005, ISBN 978-1-56677-893-0 , pp. 53–54 ( limited preview in Google Book search).
↑ R. Ekwal Sah: Silicon nitride, silicon dioxide, and emerging dielectrics 9, Issue 3 . Electrochemical Society, 2007, ISBN 978-1-56677-552-6 , pp. 99 ( limited preview in Google Book search).

[espi-1] ESPI Metals: Praseodymium Oxide ( Memento from January 22, 2013 in the web archive archive.today )

[CRC-2] David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-84.

[Sigma-3] ta sheet Praseodymium (III) oxide, 99.9% trace metals basis from Sigma-Aldrich , accessed on February 10, 2019 ( PDF ).

[krebs-4] A ^b ^c Robert E. Krebs: The history and use of our earth's chemical elements: a reference guide . Greenwood Pub Group, 2006, ISBN 978-0-313-33438-2 , pp. 283 ( limited preview in Google Book search).

[is-5] Inorganic Syntheses . Wiley-Interscience, 2006, ISBN 978-0-470-13268-5 , pp. 39 ( limited preview in Google Book search).

[buch-6] Jarek Dąbrowski, Eicke R. Weber: Predictive simulation of semiconductor processing: status and challenges . S. 266 ( limited preview in Google Book search).

[ECS-7] BL Treu, WG Fahrenholtz, MJ O'Keefe: ECS transactions . Electrochemical Society, 2005, ISBN 978-1-56677-893-0 , pp. 53–54 ( limited preview in Google Book search).

[Sah-8] R. Ekwal Sah: Silicon nitride, silicon dioxide, and emerging dielectrics 9, Issue 3 . Electrochemical Society, 2007, ISBN 978-1-56677-552-6 , pp. 99 ( limited preview in Google Book search).