Thallium (I) bromide

Crystal structure
	__ Tl + __ Br -
Crystal system	cubic
General
Surname	Thallium (I) bromide
Ratio formula	TlBr
Brief description	pale greenish yellow solid
External identifiers / databases
EC number	232-163-0
ECHA InfoCard	100.029.239
PubChem	62677
Wikidata	Q419400
properties
Molar mass	284.29 g mol −1
Physical state	firmly
density	7.5 g cm −3
Melting point	456 ° C
boiling point	815 ° C
solubility	practically insoluble in water (0.047 g l −1 at 20 ° C)
Refractive index	2,418
safety instructions
H and P phrases	H: 300-330-373-411
	P: 260-264-273-284-301 + 310-310
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Thallium (I) bromide is a chemical compound from the group of thallium compounds and bromides .

Occurrence

Thallium (I) bromide occurs naturally as a mixed form with thallium (I) chloride in the form of the very rare mineral lafossaite .

Extraction and presentation

Thallium (I) bromide can be obtained by reacting thallium (I) sulfate or thallium (I) nitrate with pure hydrogen bromide .

{\ displaystyle \ mathrm {Tl_ {2} SO_ {4} +2 \ HBr \ longrightarrow 2 \ TlBr}}

properties

Thallium (I) bromide is a pale greenish-yellow solid that is practically insoluble in water. It is freshly made pale greenish-yellow, but becomes dark in the light. It has a crystal structure of the cesium chloride type (a = 397 pm).

use

Thallium (I) bromide is used as mixed crystal together with thallium (I) iodide as thallium bromide iodide in the attenuated total reflection spectroscopy .

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h 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. 876.
↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Index of Refraction of Inorganic Crystals, pp. 10-248.
↑ ^a ^b Data sheet Thallium (I) bromide from Sigma-Aldrich , accessed on April 24, 2011 ( PDF ).
↑ Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the specified labeling it falls under the group entry thallium compounds, with the exception of those specified elsewhere in this Annex in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA ), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
↑ J Michael Hollas: Modern methods in spectroscopy ; ISBN 978-3-540-67008-7 , p. 59.

[brauer-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h 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. 876.

[CRC90_10_248-2] David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Index of Refraction of Inorganic Crystals, pp. 10-248.

[Sigma-3] Data sheet Thallium (I) bromide from Sigma-Aldrich , accessed on April 24, 2011 ( PDF ).

[CLP_100.240.787-4] Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the specified labeling it falls under the group entry thallium compounds, with the exception of those specified elsewhere in this Annex in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA ), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .

[5] J Michael Hollas: Modern methods in spectroscopy ; ISBN 978-3-540-67008-7 , p. 59.