Titanium (III) oxide

Crystal structure
	__ Ti 3+ __ O 2−
General
Surname	Titanium (III) oxide
other names	Titanium sesquioxide
Ratio formula	Ti 2 O 3
Brief description	dark purple solid
External identifiers / databases
EC number	215-697-9
ECHA InfoCard	100.014.271
PubChem	123111
Wikidata	Q2626625
properties
Molar mass	143.73 g mol −1
Physical state	firmly
density	4.49 g cm −3 (25 ° C)
Melting point	1839 ° C
boiling point	3000 ° C
solubility	almost insoluble in water, hydrochloric acid and nitric acid
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
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Titanium (III) oxide is an inorganic chemical compound of titanium from the group of oxides .

Extraction and presentation

Titanium (III) oxide can be obtained by reacting titanium with titanium (IV) oxide at 1600 ° C.

{\ displaystyle \ mathrm {Ti + 3 \ TiO_ {2} \ longrightarrow 2 \ Ti_ {2} O_ {3}}}

It can also be produced by reacting carbon monoxide with titanium (IV) oxide at 800 ° C.

properties

Titanium (III) oxide is a dark purple to black powder that is insoluble in water. It dissolves in sulfuric acid and the acid turns violet. When heated with hydrofluoric acid and aqua regia , it decomposes. Its crystal structure is trigonal , isotypic to that of corundum with space group R 3 c (space group no. 167) (a = 514.8 pm , c = 1363.6 pm). The compound exists in the range from TiO _1.49 to TiO _1.51 . Below 200 ° C it is a semiconductor, above it it is metallically conductive. Template: room group / 167

use

Titanium (III) oxide is used as a starting material for interference layers , thin-film resistors and capacitors .

Individual evidence

↑ ^a ^b ^c ^d data sheet Titanium (III) oxide, −100 mesh, 99.9% trace metals basis from Sigma-Aldrich , accessed on May 20, 2013 ( PDF ).
^ François Cardarelli: Materials Handbook: A Concise Desktop Reference . Springer, 2008, ISBN 978-1-84628-669-8 , pp. 619 ( limited preview in Google Book search).
↑ ^a ^b ^c Roger Blachnik (Ed.): Pocket book 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. 770 ( limited preview in Google Book search).
↑ ^a ^b Georg Brauer (Ed.), With the collaboration of Marianne Baudler u a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 1366.
↑ Ralf Alsfasser, Erwin Riedel, HJ Meyer: Moderne Anorganische Chemie . Walter de Gruyter, 2007, ISBN 3-11-019060-5 , p. 295 ( limited preview in Google Book search).
↑ Erwin Riedel, Christoph Janiak: Inorganic Chemistry . Walter de Gruyter, 2011, ISBN 3-11-022566-2 , p. 793 ( limited preview in Google Book search).
^ Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . Taylor & Francis US, 2011, ISBN 1-4398-1462-7 , pp. 479 ( limited preview in Google Book search).

[Sigma-1] ta sheet Titanium (III) oxide, −100 mesh, 99.9% trace metals basis from Sigma-Aldrich , accessed on May 20, 2013 ( PDF ).

[François_Cardarelli-2] François Cardarelli: Materials Handbook: A Concise Desktop Reference . Springer, 2008, ISBN 978-1-84628-669-8 , pp. 619 ( limited preview in Google Book search).

[Jean_d'._Ans,_Ellen_Lax,_Roger_Blachnik-3] Roger Blachnik (Ed.): Pocket book 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. 770 ( limited preview in Google Book search).

[brauer-4] Georg Brauer (Ed.), With the collaboration of Marianne Baudler u a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 1366.

[Ralf_Alsfasser,_Erwin_Riedel,_H._J._Meyer-5] Ralf Alsfasser, Erwin Riedel, HJ Meyer: Moderne Anorganische Chemie . Walter de Gruyter, 2007, ISBN 3-11-019060-5 , p. 295 ( limited preview in Google Book search).

[Erwin_Riedel,_Christoph_Janiak-6] Erwin Riedel, Christoph Janiak: Inorganic Chemistry . Walter de Gruyter, 2011, ISBN 3-11-022566-2 , p. 793 ( limited preview in Google Book search).

[Dale_L._Perry-7] Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . Taylor & Francis US, 2011, ISBN 1-4398-1462-7 , pp. 479 ( limited preview in Google Book search).