Sodium tellurate

Crystal structure
	No drawing available
General
Surname	Sodium tellurate
other names	Disodium tellurate; Sodium metatellurate;
Ratio formula	Na 2 TeO 4
Brief description	colorless solid
External identifiers / databases
ECHA InfoCard	100.030.222
PubChem	13652393
Wikidata	Q18212141
properties
Molar mass	237.58 g mol −1
Physical state	firmly
density	4.26 g cm −3
solubility	soluble in water
safety instructions
GHS labeling of hazardous substances hydrate Caution
H and P phrases	H: 302-315-319-335
	P: 280-301 + 330 + 331-302 + 352-304 + 340-312-332 + 313-337 + 313
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Sodium tellurate is an inorganic chemical compound of sodium from the group of tellurates .

Extraction and presentation

Sodium tellurate can be obtained by dehydration of disodium tetrahydrogen orthotellurate Na ₂ H ₄ TeO ₆ and subsequent reaction with sodium nitrate .

It is also possible to display it by heating sodium tellurite in air.

properties

Sodium tellurate is a colorless solid that is soluble in water. It has an orthorhombic crystal structure with the space group Pbcn (space group no. 60) , which changes to a monoclinic crystal structure at 420 ° C.Template: room group / 60

use

Sodium tellurate is used as an intermediate in the extraction of tellurium. Sodium tellurate solutions are used for black or blue-black coatings on iron, steel, aluminum and copper.

Individual evidence

↑ ^a ^b ^c ^d B. Kratochvíl, L. Jenšovský: The crystal structure of sodium metatellurate. In: Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 33, 1977, p. 2596, doi : 10.1107 / S0567740877008978 .
↑ ^a ^b ^c ^d ^e ^f data sheet Sodium tellurate (VI) hydrate, Te 45% min from AlfaAesar, accessed on April 19, 2019 ( PDF )(JavaScript required) .
↑ Wolfgang A. Herrmann, Christian Erich Zybill: Synthetic Methods of Organometallic and Inorganic Chemistry, Volume 4, 1997 Volume 4: Sulfur, Selenium and Tellurium . Georg Thieme Verlag, 2014, ISBN 3-13-179191-8 , p. 201 ( limited preview in Google Book search).
↑ Cyrille Galven, Thierry Pagnier et al. a .: β-Na2TeO4: Phase Transition from an Orthorhombic to a Monoclinic Form. Reversible CO capture. In: Inorganic Chemistry. 57, 2018, p. 7334, doi : 10.1021 / acs.inorgchem.8b00993 .
↑ Guangcheng Xi, Yiya Peng et al. a .: Synthesis, Characterization, and Growth Mechanism of Tellurium Nanotubes. In: Crystal Growth & Design. 5, 2005, p. 325, doi : 10.1021 / cg049867p .

[DOI10.1107/S0567740877008978-1] B. Kratochvíl, L. Jenšovský: The crystal structure of sodium metatellurate. In: Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 33, 1977, p. 2596, doi : 10.1107 / S0567740877008978 .

[Alfa-2] ↑ ^a ^b ^c ^d ^e ^f data sheet Sodium tellurate (VI) hydrate, Te 45% min from AlfaAesar, accessed on April 19, 2019 ( PDF )(JavaScript required) .

[Wolfgang_A._Herrmann,_Christian_Erich_Zybill-3] Wolfgang A. Herrmann, Christian Erich Zybill: Synthetic Methods of Organometallic and Inorganic Chemistry, Volume 4, 1997 Volume 4: Sulfur, Selenium and Tellurium . Georg Thieme Verlag, 2014, ISBN 3-13-179191-8 , p. 201 ( limited preview in Google Book search).

[DOI10.1021/acs.inorgchem.8b00993-4] Cyrille Galven, Thierry Pagnier et al. a .: β-Na2TeO4: Phase Transition from an Orthorhombic to a Monoclinic Form. Reversible CO capture. In: Inorganic Chemistry. 57, 2018, p. 7334, doi : 10.1021 / acs.inorgchem.8b00993 .

[DOI10.1021/cg049867p-5] Guangcheng Xi, Yiya Peng et al. a .: Synthesis, Characterization, and Growth Mechanism of Tellurium Nanotubes. In: Crystal Growth & Design. 5, 2005, p. 325, doi : 10.1021 / cg049867p .