Copper silicate precipitation

Blue friable precipitate is formed in a beaker filled with a clear solution

Scientific name: CuSiO<sub>3</sub> formation


Осаждение силикатов меди



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Reaction formula

CuSO4 + Na2SiO3 → CuSiO3 + Na2SO4

Step-by-step instruction

  1. Prepare a water solution of copper sulfate in a one beaker and a water solution of sodium silicate in another.
  2. Gradually add the copper sulfate solution to the sodium silicate solution. A blue friable precipitate is formed.

Scientific background

Both copper sulfate and sodium silicate are soluble in water, but copper silicate is insoluble. The blue copper silicate precipitate is formed when solutions of copper sulfate and sodium silicate are mixed.


Published on 28 April 2015

  • Fire
  • Heating with fire
  • Explosion
  • Poisoned gas
  • Organic
  • Electricity
  • Solution
  • Oxidation reduction
  • Color change
  • Precipitate
  • Gassing
  • Catalyst