Lithium metasilicate

Lithium metasilicate is an ionic compound with the formula Li2SiO3

Lithium metasilicate
Names
IUPAC name
Lithium metasilicate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.030.232
EC Number
  • 233-270-5
UNII
Properties
Li2SiO3
Molar mass 89.566 g/mol
Appearance colorless crystals
Density 2.52 g/cm3
Melting point 1,201 °C (2,194 °F; 1,474 K)
insoluble
1.584
Structure
orthorhombic
Thermochemistry
99.1 J/mol K
79.8 J/mol K
-1648 kJ/mol
28 kJ/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Preparation

Lithium metasilicate is prepared by the reaction of lithium carbonate and silicon dioxide at temperatures between 515-565°C.

Applications

The melting of lithium metasilicate is used for the calibration of thermocouples.

References

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