... , transparent or semi-transparent . Sodium Silicate is made from sodium oxide and silicon dioxide, the molar ratio between them called modulus ... -2.53.2-3.4Total soluble solid(Na2O+SiO2),%≥ 98Sodium oxide (Na2O), % :33 (+-1.0 )29+-1.023+-1.0Silica ... oxide (SiO2), % :66 (+-1.0 )69+-1.076+-1.0Fe, % ≤ 0. ...