SNOWTEX Typical Properties
Source: Nissan Chemical America
SNOWTEX –PS is an innovative high-performance silica sols shaped a like a string of pearls made of 10 to 50 nm spherical colloidal silica particles
SNOWTEX –PS is an innovative high-performance silica sols shaped like a string of pearls made of 10 to 50 nm spherical colloidal silica particles bound to a length of 50 to 400 nm. This is very different from traditional silica sols, which are dispersions of discrete particles. This gives SNOWTEX-PS characteristics not found in conventional silica sols. There are two forms of SNOWTEX-PS (SNOWTEX ST-PS-S and ST-PS-M). The typical properties are:
| Grade | ST-PS-S | ST-PS-M |
| Specific Gravity (20°C) | 1.09 - 1.11 | 1.12 - 1.14 |
| pH | 9.5 - 10.5 | 9.0 - 10.5 |
| Viscosity (25°C, mPa-s) | 3 - 30 | 3 - 30 |
| SiO2 (wt%) | 15 - 16 | 20 - 21 |
| Na2O (wt%) | 0.10 - 0.20 | 0.05 - 0.15 |
| Particle Diameter*1(nm) | 10 - 20 | 20 - 30 |
| Particle Diameter*2(nm) | 100 - 150 | 100 - 150 |
| Freeze point (°C) | 0 | 0 |
| All are translucent, milky white in appearance | ||
| *1 Spherical colloidal silica | ||
| *2 Dynamic light scattering method | ||
Nissan Chemical America, 10777 Westheimer, Suite 150, Houston, TX 77042. Tel: 713-532-4745; Fax: 713-532-0363.
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