Specifications
foundry casting1 Its molecular formula mSiO2nH2O
2 It used for precision casting ,fire-proof materials
acidic xolloidal silica
Designation
| sw-20 | sw-2 5 | sw-30 |
SiO2 (wt%)
| 2 0.0-21.0 | 25.0-26.0 | 30.0-31.0 |
Na2O(wt%)
| 0.04 | 0.05 | 0.06 |
PH(25°C)
| 2.0-4.0 | 2.0-4.0 | 7 .0 |
Density(25°C,g/cm3)
| 1.12-1.14 | 1.15-1.17 |
1.15-1.17 |
Viscosity(25°C,mPaS)
| 5.0 | 6.0 | 7.0 |
Particle size (nm)
| 10-20 | 10-20 | 10-20 |
Stability | 5 | 3 |
3
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