Neutral Sodium Silicate Liquid is a clear to slightly hazy, viscous aqueous solution composed of sodium oxide (Na₂O) and silica (SiO₂) in a balanced molar ratio, typically between 1:2.8 to 1:3.4. It is produced by dissolving neutral sodium silicate glass in hot water under controlled conditions.
Unlike alkaline silicates, neutral sodium silicate has low alkalinity, making it ideal for applications that require chemical stability, mild pH, and compatibility with sensitive materials. It is widely used in paper, detergent, adhesive, ceramic, and chemical industries for its excellent binding, film-forming, and corrosion-inhibiting properties.
| Product Group | Properties | Range |
|---|---|---|
| Sodium Silicate Liquid (Neutral Grade) | ||
| Wt. Ratio of Na2O: SiO2 | 1:2.90 to 3.40 | |
| Specific Gravity / Baume | 1.10 - 1.40 / 20 - 42 Be | |
| Total Soluble Solids | 18 to 39% | |
| Na2O | 4 to 10% | |
| SiO2 | 12 to 30% |
Applications
- Paper Industry : Used as a de-inking agent and coating binder.
- Detergents : Acts as a mild cleaning agent and corrosion inhibitor in formulations.
- Chemical Manufacturing : A base material for silica gel and catalyst production.
- Ceramics & Refractories : Functions as a binder in fire-resistant and structural ceramic products.
- Welding Electrodes : Utilized as a neutral binder and flux component.
- Adhesives & Sealants : Provides excellent bonding strength with neutral pH.
Features
- Neutral pH and balanced molar ratio
- High clarity and chemical stability
- Excellent binding and film-forming properties
- Environmentally safe and non-toxic when used correctly
- Customizable viscosity and silica ratio as per application
Specifications
- Appearance : Clear to slightly hazy liquid
- Molar Ratio (Na₂O:SiO₂) : 1:2.8 to 1:3.4
- pH : 10.0 – 11.5
- Density : 1.30 – 1.45 g/cm³
- Solubility : Completely soluble in water
Storage & Handling
Store in tightly closed containers in a cool, dry, and well-ventilated area. Avoid contact with strong acids and incompatible materials. Use appropriate personal protective equipment (PPE) when handling.