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LITHIUM METABORATE

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LITHIUM METABORATE Basic information

Product Name:
LITHIUM METABORATE
Synonyms:
  • boricacid(hbo2),lithiumsalt
  • Boricacidlithiumsalt
  • lithiummetaborate,anhydrous
  • LITHIUM METABORATE, ANHYDROUS, BIO-REFINEDLITHIUM METABORATE, ANHYDROUS, BIO-REFINEDLITHIUM METABORATE, ANHYDROUS, BIO-REFINEDLITHIUM METABORATE, ANHYDROUS, BIO-REFINED
  • LITHIUM METABORATE, ANHYDROUS, REAGENT (ACS)LITHIUM METABORATE, ANHYDROUS, REAGENT (ACS)LITHIUM METABORATE, ANHYDROUS, REAGENT (ACS)
  • LITHIUM METABORATE, ANHYDROUS, REAGENTLITHIUM METABORATE, ANHYDROUS, REAGENTLITHIUM METABORATE, ANHYDROUS, REAGENTLITHIUM METABORATE, ANHYDROUS, REAGENT
  • Lithiummetaborate,octahydrat
  • SPECTROMELT A 20
CAS:
13453-69-5
MF:
BH2LiO2
MW:
51.76
EINECS:
236-631-5
Product Categories:
  • organic or inorganic borate
  • Lithium Salts
  • ACS GradeSynthetic Reagents
  • Essential Chemicals
  • Materials Science
  • Metal and Ceramic Science
  • Inorganics
  • Inorganic Salts
  • Lithium
  • Routine Reagents
  • Lithium Salts
  • Metal and Ceramic Science
  • Salts
Mol File:
13453-69-5.mol
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LITHIUM METABORATE Chemical Properties

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
Specific Gravity
1.4
color 
White
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)
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Safety Information

Risk Statements 
20/21/22-41
Safety Statements 
24/25
WGK Germany 
1
3
TSCA 
Yes
HS Code 
2840 20 90

MSDS

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LITHIUM METABORATE Usage And Synthesis

Chemical Properties

White powder

Uses

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.

Uses

Lithium metaborate is used for flux.

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.

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