Lithium tetraborate

Structural formula
	No drawing available
General
Surname	Lithium tetraborate
other names	Lithium borate (ambiguous); LBO;
Molecular formula	Li 2 B 4 O 7
Brief description	white odorless solid
External identifiers / databases
EC number	234-514-3
ECHA InfoCard	100.031.364
PubChem	15764247
Wikidata	Q3109058
properties
Molar mass	169.12 g mol −1
Physical state	firmly
density	2.4 g cm −3
Melting point	930 ° C
solubility	slightly soluble in water (28.9 g l −1 at 20 ° C)
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 315-319-335
	P: 261-305 + 351 + 338
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Lithium tetraborate is an inorganic chemical compound of lithium from the group of borates and the lithium salt of tetraboric acid, which is only known in the form of its salts (see borax ) .

Extraction and presentation

Lithium tetraborate can be obtained by reacting lithium metaborate with boron trioxide at 250 ° C and high pressure.

{\ displaystyle \ mathrm {2 \ LiBO_ {2} + B_ {2} O_ {3} \ longrightarrow Li_ {2} B_ {4} O_ {7}}}

properties

Lithium tetraborate is a white, odorless solid that is sparingly soluble in water. It's piezoelectric .

use

Lithium tetraborate and sodium tetraborate are used as disintegrants for X-ray fluorescence analyzes. Lithium tetraborate is also used as an ingredient in the manufacture of glasses , for example for Lindemann glass .

Individual evidence

↑ ^a ^b ^c ^d ^e data sheet Lithium tetraborate, Puratronic®, 99.998% (metals basis) from AlfaAesar, accessed on April 15, 2015 ( PDF )(JavaScript required) .
↑ ^a ^b ^c ^d data sheet Lithium tetraborate, ≥99.995% trace metals basis from Sigma-Aldrich , accessed on April 15, 2015 ( PDF ).
↑ ^a ^b Christoph Janiak: Riedel Modern Inorganic Chemistry. Walter de Gruyter, 2012, ISBN 978-3-110-24901-9 , p. 187 ( limited preview in the Google book search).
↑ Gerald Routschka: Refractory materials and refractory construction. Vulkan-Verlag GmbH, 2000, ISBN 978-3-410-14922-4 , p. 71 ( limited preview in Google book search).

[Alfa-1] ↑ ^a ^b ^c ^d ^e data sheet Lithium tetraborate, Puratronic®, 99.998% (metals basis) from AlfaAesar, accessed on April 15, 2015 ( PDF )(JavaScript required) .

[Sigma-2] ta sheet Lithium tetraborate, ≥99.995% trace metals basis from Sigma-Aldrich , accessed on April 15, 2015 ( PDF ).

[JaniakMeyer2012-3] Christoph Janiak: Riedel Modern Inorganic Chemistry. Walter de Gruyter, 2012, ISBN 978-3-110-24901-9 , p. 187 ( limited preview in the Google book search).

[Routschka2000-4] Gerald Routschka: Refractory materials and refractory construction. Vulkan-Verlag GmbH, 2000, ISBN 978-3-410-14922-4 , p. 71 ( limited preview in Google book search).