title: Lithium metasilicate
text: # Lithium metasilicate
  
  Lithium metasilicate is an ionic compound with the formula $Li_2SiO_3$
  
  ## Preparation
  
  Lithium metasilicate is prepared by the reaction of lithium carbonate and silicon dioxide at temperatures between 515 and 565 °C.
  
  ## Applications
  
  The melting of lithium metasilicate is used for the calibration of thermocouples.
  
  