222534

Sigma-Aldrich

Lithium tetraborate

≥99.9% trace metals basis

Linear Formula:
Li2B4O7
CAS Number:
Molecular Weight:
169.12
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.55

Quality Level

assay

≥99.9% trace metals basis

form

powder

mp

760-880 °C (lit.)

density

≥0.25 g/mL at 25 °C (lit.)

SMILES string

[Li+].[Li+].[O-]B(OB=O)OB([O-])OB=O

InChI

1S/B4O7.2Li/c5-1-9-3(7)11-4(8)10-2-6;;/q-2;2*+1

InChI key

PSHMSSXLYVAENJ-UHFFFAOYSA-N

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General description

Lithium tetraborate is a pyroelectric and piezoelectric material with potential applications in pressure sensors and surface acoustic wave (SAW) devices. In the presence of activators such as terbium and cupric ions, it shows thermoluminesence property.
Lithium tetraborate (Li2B4O7) is a piezoelectric material. It can be synthesized from boric acid. Its pyroelectric, piezoelectric and dielectric properties have been evaluated. It is a widely used material in the field of non-linear optics. Its electronic structure has been investigated by x-ray photoelectron spectroscopy (XPS) and quantum mechanical modelling methods.

Packaging

250 g in poly bottle
1 kg in poly bottle

Application

Used as a spectroscopic fluxing agent.

Signal Word

Danger

Hazard Statements

hazcat

Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 2

storage_class_code

13 - Non Combustible Solids

WGK Germany

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Thermoluminescence in lithium tetraborate doped with activators.
Kutomi Y and Takeuchi N.
Journal of Materials Science Letters, 5(1), 51-53 (1986)
Pyroelectric and piezoelectric properties of lithium tetraborate single crystal.
Bhalla AS, et al.
Japanese Journal of Applied Physics, 24(S2), 727-727 (1985)
Lithium tetraborate: a new temperature-compensated SAW substrate material.
Whatmore RW, et al.
Electronics Letters, 17(1) (1981)
Elastic, piezoelectric, acousto-optic and electro-optic properties of Li2B4O7.
Shiosaki T, et al.
Japanese Journal of Applied Physics, 24(S1), 25-25 (1985)
Electronic structure of lithium tetraborate Li2B4O7 crystals. Cluster calculations and x-ray photoelectron spectroscopy.
Kuznetsov AY, et al.
Physics of the Solid State, 41(1), 48-50 (1999)

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