Thallium (I) carbonate

Structural formula
General
Surname	Thallium (I) carbonate
other names	Thallium carbonate; Dithallium carbonate;
Molecular formula	Tl 2 CO 3
Brief description	colorless solid
External identifiers / databases
EC number	229-434-0
ECHA InfoCard	100,026,759
PubChem	23031
Wikidata	Q2613543
properties
Molar mass	468.78 g mol −1
Physical state	firmly
density	7.11 g cm −3 (25 ° C)
Melting point	260–270 ° C (decomposition); 272 ° C;
solubility	soluble in water (52 g l −1 at 18 ° C); insoluble in pure ethanol ;
safety instructions
H and P phrases	H: 300-310-330-373-411
	P: 260-264-273-280-284-301 + 310
Toxicological data	21 mg kg −1 ( LD 50 , mouse , oral ) ; 117 mg kg −1 ( LD 50 , rat , transdermal ) ;
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Thallium (I) carbonate is an inorganic chemical compound of thallium from the group of carbonates .

Extraction and presentation

Thallium (I) carbonate can be obtained by reacting a hot thallium (I) hydroxide solution with carbon dioxide .

{\ displaystyle \ mathrm {2 \ TlOH + CO_ {2} \ longrightarrow Tl_ {2} CO_ {3} + H_ {2} O}}

properties

Thallium (I) carbonate is a colorless solid that is in the form of needle-shaped crystals with a sharp enantiotropic transformation point at 228 ° C and is soluble in water. It is the only heavy metal carbonate that is readily soluble in water. It is not hygroscopic and can be kept in air up to 175 ° C without noticeable change. Its aqueous solutions react strongly basic as a result of hydrolysis . It melts into a dark gray mass. The connection has a monoclinic crystal structure with the space group C 2 / m (space group no. 12) . At very high pressures, however, this is destroyed. Template: room group / 12

use

Thallium (I) carbonate can be used to make artificial diamonds and to test for carbon disulfide .

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g Georg Brauer , with the assistance of Marianne Baudler u. a. (Ed.): Handbook of Preparative Inorganic Chemistry . 3rd, revised edition. tape I . Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , pp. 887 .
↑ ^a ^b ^c ^d ^e ^f ^g data sheet Thallium (I) carbonate, ≥99.99% trace metals basis from Sigma-Aldrich , accessed on April 6, 2014 ( PDF ).
↑ Erwin Riedel, Christoph Janiak: Inorganic Chemistry . Walter de Gruyter, 2011, ISBN 3-11-022566-2 , p. 615 ( limited preview in Google Book search).
^ ^A ^b Dale L. Perry: Handbook of Inorganic Compounds . CRC Press, 1995, ISBN 0-8493-8671-3 , pp. 406 ( limited preview in Google Book search).
↑ A. Grzechnik, K. Friese: Crystal structure and stability of Tl2CO3 at high pressures. In: Acta Crystallographica Section C Crystal Structure Communications. 66, 2010, pp. I37-i38, doi : 10.1107 / S0108270110005652 .
^ Robert E. Krebs: The History and Use of Our Earth's Chemical Elements: A Reference Guide . Greenwood Publishing Group, 2006, ISBN 0-313-33438-2 , pp. 188 ( limited preview in Google Book search).

[brauer-1] ↑ ^a ^b ^c ^d ^e ^f ^g Georg Brauer , with the assistance of Marianne Baudler u. a. (Ed.): Handbook of Preparative Inorganic Chemistry . 3rd, revised edition. tape I . Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , pp. 887 .

[Sigma-2] ↑ ^a ^b ^c ^d ^e ^f ^g data sheet Thallium (I) carbonate, ≥99.99% trace metals basis from Sigma-Aldrich , accessed on April 6, 2014 ( PDF ).

[Erwin_Riedel,_Christoph_Janiak-3] Erwin Riedel, Christoph Janiak: Inorganic Chemistry . Walter de Gruyter, 2011, ISBN 3-11-022566-2 , p. 615 ( limited preview in Google Book search).

[Dale_L._Perry-4] A ^b Dale L. Perry: Handbook of Inorganic Compounds . CRC Press, 1995, ISBN 0-8493-8671-3 , pp. 406 ( limited preview in Google Book search).

[DOI10.1107/S0108270110005652-5] A. Grzechnik, K. Friese: Crystal structure and stability of Tl2CO3 at high pressures. In: Acta Crystallographica Section C Crystal Structure Communications. 66, 2010, pp. I37-i38, doi : 10.1107 / S0108270110005652 .

[Robert_E._Krebs-6] Robert E. Krebs: The History and Use of Our Earth's Chemical Elements: A Reference Guide . Greenwood Publishing Group, 2006, ISBN 0-313-33438-2 , pp. 188 ( limited preview in Google Book search).