Neutral Sodium Silicate Glass is a solid, colorless to light-colored vitreous material composed mainly of sodium oxide (Na₂O) and silica (SiO₂) with a balanced molar ratio, typically between 1:2.8 to 1:3.4. Unlike its alkaline counterpart, neutral sodium silicate has a lower alkalinity, making it suitable for applications requiring chemical stability and minimal reactivity.
It is used as a raw material to produce neutral sodium silicate liquid solutions, which are widely applied in paper, detergent, adhesive, refractory, ceramic, and chemical industries.
| Product Group | Properties | Range |
|---|---|---|
| Sodium Silicate Solid Glass Lumps (Neutral Grade) | ||
| Wt. Ratio of Na2O: SiO2 | 1:2.90 to 3.40 | |
| Total Soluble Solids | 99% min | |
| Na2O | 23 to 25% | |
| SiO2 | 73 to 76% |
Applications
- Paper Industry : Used in de-inking, coating, and as a sizing agent.
- Detergents : Acts as a corrosion inhibitor and cleaning agent in mild formulations.
- Chemical Processing : Serves as a precursor in the manufacture of silica gels and zeolites.
- Refractories & Ceramics : Binds and strengthens high-temperature resistant materials.
- Welding Electrodes : Used in flux compositions for neutral pH applications.
- Adhesives & Binders : Ideal for neutral pH adhesives for sensitive substrates.
Features
- Balanced molar ratio for neutral pH applications
- Chemically stable and non-reactive
- High purity and clarity
- Excellent binder and film-forming properties
- Long shelf life when stored properly
Specifications
- Molar Ratio (Na₂O:SiO₂) : 1:2.8 to 1:3.4
- Form : Solid glass lumps or crushed granules
- Color : White to pale bluish/greenish (depending on trace impurities)
Storage & Handling
Store in a dry and ventilated area. Protect from moisture to prevent caking or premature reaction. Use standard industrial PPE when handling.