Hello,
Is it possible to further dilute a commercial sodium silicate solution or waterglass, simply by adding water ? I've found a paper (Hamouda and Amriri, 2014) which demonstrates that dissolved sodium silicate tends to form gels when the pH of the solution is reduced. Since sodium silicate solution is highly alkaline, I am assuming that adding water may reduce the pH of the solution, thus turning dissolved sodium silicate into gel form.
Hamouda, A.A.; Amiri, H.A.A. Factors Affecting Alkaline Sodium Silicate Gelation for In-Depth Reservoir Profile Modification. Energies 2014, 7, 568-590. https://doi.org/10.3390/en7020568