SiO₂ 30–31% · 10–11.5 nm · NH₃-Stabilized High-Concentration Colloidal Silica
SN-JA30 is an ammonia (NH₃) stabilized New-Type colloidal silica with high SiO₂ content of 30–31% and a mean particle size of 10–11.5 nm. Its ultrafine nanoparticles (SSA 198–258 m²/g) are uniformly dispersed in water as a milky-white translucent colloid. The higher SiO₂ concentration delivers greater binding force and sintering strength per unit dose, making SN-JA30 particularly suitable for investment-casting shell molds, refractory coatings, ceramic binders, catalyst supports, ceramic-coated separators for secondary batteries and CMP slurry feedstock.
Key Features
- 💧 High SiO₂ 30–31 % — Stronger binding and sintering strength per unit dose
- 🔬 Mean 10–11.5 nm — Ultrafine nano dispersion — excellent fine-pore penetration
- 🧪 SSA 198–258 m²/g — Very high SSA — strong binding and catalyst-loading capacity
- 🌡️ Excellent Sintering / Heat — Pure SiO₂ phase and low residue on firing
- 🧱 Max Investment-Shell Strength — High-concentration sol boosts shell strength and delamination resistance
- 🏭 Mass Supply — IBC/drum packaging for large-scale projects
Technical Specifications
| Item | Value |
|---|---|
| Product Code | SN-JA30 |
| Type | New Type · NH₃-stabilized |
| Appearance | Milky-white translucent colloidal liquid |
| SiO₂ | 30 ~ 31 % |
| Na₂O | ≤ 0.06 % |
| pH | 9.5 ~ 9.8 |
| Viscosity | ≤ 7.0 mPa·s |
| Density | 1.19 ~ 1.21 g/cm³ |
| Mean Particle Size | 10 ~ 11.5 nm |
| Specific Surface Area | 198 ~ 258 m²/g |
| Stabilizer | NH₃ (ammonia-stabilized) |
| Origin | China |
| Packaging | 25 kg drum · 200 kg drum · 1,000 kg IBC |
Parent Category: Silica Sol (Colloidal Silica)
Particle size, purity, surface treatment and packaging can be customized to your specification. Contact us for samples, TDS and quotations.