Na-stabilizer colloidal silica can be divided into GS-10, GS-15, GS-20, GS-25, GS-30 based on its different SiO2 content.
Designation | Model and Standard | ||||
GS-10 | GS-15 | GS-20 | GS-25 | GS-30 | |
Appearance | Slight milky transparent to translucent liquid | ||||
SiO2 (wt%) | 10±1% | 15±1% | 20±1% | 25±1% | 30.5±1% |
Na2O (wt%) | ≤0.5% | ||||
PH (20°C) | 9.5-11.0 | ||||
Density (20°C, g/cm3) | 1.06-1.08 | 1.08-1.10 | 1.12-1.14 | 1.15-1.17 | 1.19-1.21 |
Viscosity (20°C, mPa•S) | ≤10 | ||||
Particle size (nm) | 8-15 | ||||
Stability | Two years |