Ammonium Colloidal silica
This type use ammonium ion as stabilizer, compared with the colloidal silica use sodium ion as stabilizer, It has better toughness and air permeability, so it is more suitable for making fiber soft products in refractories, and electronic polishing, coating, flocking, wool spinning and other industries.
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Item |
Model and Standard |
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NS-20 |
NS-25 |
NS-30 |
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Appearance |
Slight milky transparent to translucent liquid |
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Na2O (wt%) |
≤0.1% |
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SiO2 (wt%) |
20±1% |
25±1% |
30±1% |
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Density (20°C,g/cm3) |
1.12-1.14 |
1.15-1.17 |
1.19-1.21 |
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pH (20°C) |
8.5-10.0 |
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Viscosity (20°C,mPa•S) |
≤10 |
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Particle size (nm) |
8-15 |
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Stability |
One year |
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