Talk:Precipitated silica

isn't it Na2SiO3 + H2SO4 -> SiO2 + NasSO4 + H2O ??? — Preceding unsigned comment added by 2A02:908:ED40:4400:3CB8:1CD:79FE:E9AB (talk) 20:52, 18 May 2016 (UTC)

I don't think Na2(SiO2)7 can be correct. First of all it lacks an oxygen, and the practical limit for sodium silicate is somewhere around 4:1 SiO2:Na2O. So the most silica rich silicate should be something like Na2Si4O9. — Preceding unsigned comment added by 109.247.229.66 (talk) 08:47, 5 November 2020 (UTC)