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HomeProduct name listLITHIUM METABORATE

LITHIUM METABORATE

Synonym(s):Boric acid lithium salt

  • CAS NO.:13453-69-5
  • Empirical Formula: BH2LiO2
  • Molecular Weight: 51.76
  • MDL number: MFCD00011089
  • EINECS: 236-631-5
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-08-24 19:19:26
LITHIUM METABORATE Structural

What is LITHIUM METABORATE?

Chemical properties

White powder

The Uses of LITHIUM METABORATE

Lithium metaborate is used for flux.

The Uses of LITHIUM METABORATE

Lithium Metaborate is commonly used as a fused compound or a component for an assay. It has been used for the analysis of wild rice for silicon, calcium, magnesium and potassium. Lithium metaborate was used to fuse with solid samples for decomposition.

What are the applications of Application

Lithium Metaborate is a standard component used for assays

Preparation

Lithium metaborate, LiBO2, may be prepared by fusing together either lithium hydroxide or lithium carbonate and boric acid in the proper stoichiometric ratio. Recrystallization from water at about room temperature yields lithium metaborate- octahydrate, LiBO2·8H2O. The octahydrate may be dried to yield a dihydrate, LiBO2-2H2O, or a half-hydrate, LiBO2·0.5H2O.

General Description

Lithium metaborate (LiBO2) is the lithium salt of boric acid. It can be synthesized by reacting orthoboric acid with lithium carbonate. Its crystals belong to the monoclinic crystal system having space group P21/c. Three polymorphic forms have been identified on ambient pressure devitrification of LiBO2: α-, γ- and β′-LiBO2.

Flammability and Explosibility

Not classified

Structure and conformation

Lithium metaborate has several crystal forms. 
Below 100 °C, LiBO2·8H2O is firstly dehydrated to a lower hydrate LiBO2·2H2O [1].
When the temperature is higher than 190°C, the dehydrated amorphous hydrate could crystallize into other poorly crystalline phases designated as LiBO2·xH2O (x=0.3/0.5)[2]
An anhydrous monoclinic α-LiBO2 could be obtained when the baking temperature reaches 600 °C. The α form consists of infinite chains of trigonal planar metaborate anions [BO2O-]n.
At 950 °C, by applying 15 kbar of pressure to a LiCl flux containing α-LiBO2, α-LiBO2 could be converted to metastable γ-LiBO2 crystals which were small, but of high quality[3]. γ-LiBO2 has tetragonal symmetry with lattice parameter a=4.1961 ?, c=6.5112 ?, space group I-42d and a density of 2.882 g/cm3.

References

[1] E.I.Kamitsos, A.P.Patsis, M.A.Karakassides, G.D.Chryssikos, Infrared reflectance spectra of lithium borate glasses, Journal of Non-Crystalline Solids, 1990, 126, 52-67.
[2] Li Lei, Duanwei He, Kai He, Jiaqian Qin, Shanmin Wang, Pressure-induced coordination changes in LiBO2, Journal of Solid State Chemistry, 2009, 182, 3041-3048.
[3] Colin D. McMillen, Henry G. Giesber, Joseph W. Kolis, The hydrothermal synthesis, growth, and optical properties of γ-LiBO2, Journal of Crystal Growth, 310, 2008, 299-305.

Properties of LITHIUM METABORATE

Melting point: 845 °C (lit.)
Density  1,4 g/cm3
storage temp.  Store at +5°C to +30°C.
solubility  soluble in ethanol.
form  Powder
color  White
Specific Gravity 1.4
Water Solubility  Soluble in water(27.5g/L).
Sensitive  Hygroscopic
Exposure limits ACGIH: TWA 2 mg/m3; STEL 6 mg/m3
Stability: Stable.
CAS DataBase Reference 13453-69-5(CAS DataBase Reference)
EPA Substance Registry System Lithium metaborate (13453-69-5)

Safety information for LITHIUM METABORATE

Signal word Danger
Pictogram(s)
ghs
Corrosion
Corrosives
GHS05
ghs
Exclamation Mark
Irritant
GHS07
ghs
Health Hazard
GHS08
GHS Hazard Statements H302:Acute toxicity,oral
H318:Serious eye damage/eye irritation
Precautionary Statement Codes P202:Do not handle until all safety precautions have been read and understood.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P308+P313:IF exposed or concerned: Get medical advice/attention.

Computed Descriptors for LITHIUM METABORATE

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