Sodium Silicate Solid

What Is Sodium Silicate Solid?

Sodium silicate solid is the dehydrated and concentrated form of liquid sodium silicate (water glass). It is produced by removing water from the aqueous solution, resulting in a stable, non-hygroscopic solid. Chemically, it is a salt composed of silica (SiO₂) and sodium oxide (Na₂O). The SiO₂ to Na₂O molar ratio affects the solubility, viscosity, and alkalinity of the compound.

Main Production Methods of Sodium Silicate Solid

1. Furnace Process (Dry Method)

In this common process, silica sand (SiO₂) and sodium carbonate (Na₂CO₃) are mixed and melted at 1300–1500°C in a furnace. The resulting molten glass is cooled, crushed, and ground into flakes or powder. This method ensures high purity and large-scale efficiency.

2. Hydrothermal Process (Wet Method)

In this method, high-purity silica is dissolved in concentrated sodium hydroxide (NaOH) under elevated temperature and pressure. The solution is evaporated and dried to form the solid product. This approach is suitable for producing grades with higher silica content.

Advantages of Using the Solid Form

• Reduced transportation cost: Lighter and easier to ship than liquid sodium silicate.
• Long shelf life: Does not crystallize or gel during storage.
• Easy handling: Requires no corrosion-resistant tanks; can be stored in standard containers.
• Flexible usage: Easily dissolved in water to prepare liquid silicate with desired concentration.
• High stability: Resistant to oxidation, heat, and environmental degradation.

5 Major Industrial Applications of Sodium Silicate Solid

1. Construction and Building Materials

Used to strengthen and waterproof concrete and mortars, sodium silicate acts as a setting accelerator and adhesive. It’s also applied in producing fireproof boards, thermal insulation panels, and refractory cements.

2. Detergents and Cleaning Products

Sodium silicate solid is a key component in laundry detergents, dishwashing powders, and industrial cleaners. It serves as a pH stabilizer, corrosion inhibitor, and processing aid while protecting machine parts from rust.

3. Foundry and Metal Casting

In the foundry industry, it acts as a binder for sand molds, providing excellent heat resistance and dimensional accuracy for casting metals like iron, steel, and aluminum.

4. Textile Industry

Used as a hydrogen peroxide stabilizer in cotton bleaching and as a buffering agent in dyeing, ensuring consistent shades and improved color fastness.

5. Water and Wastewater Treatment

Sodium silicate is an effective flocculant and corrosion inhibitor used to remove heavy metals and colloids from water. It also protects pipelines and cooling systems from scale and corrosion.

Other Common Uses

• Manufacturing of silica gel (moisture absorber)
• Paper and cardboard strengthening
• Paints and coatings as a binder and stabilizer
• Agriculture: used as a soil conditioner to improve nutrient absorption

How to Dissolve Sodium Silicate Solid in Water

Dissolve the desired amount of sodium silicate solid in hot water (80–90°C) under continuous stirring until a clear, uniform solution is obtained. Adjust concentration depending on the end-use application.

Safety and Storage Guidelines

• Avoid direct contact with skin and eyes; rinse with plenty of water in case of exposure.
• Wear protective gloves, goggles, and dust masks when handling powder.
• Store in a cool, dry, and well-ventilated area, away from acids and moisture.
• Use sealed, corrosion-resistant containers for long-term storage.

Buying Guide: Choosing the Right Sodium Silicate

• Molar ratio (SiO₂/Na₂O): Select the right ratio for your industrial process.
• Purity and particle size: High purity is vital for detergents and textiles.
• Packaging quality: Ensure moisture-resistant and durable packaging.
• Documentation: Request TDS and COA from the supplier.

Nova Silicate is a trusted supplier of high-quality sodium silicate solid in Iran, offering competitive prices and professional consultation.

Contact Information:
📞 00989364775859 (Phone / WhatsApp)
🌐 https://novasilicate.com

Final Summary

Sodium Silicate Solid (Na₂SiO₃) is a versatile, cost-effective material that serves as a cornerstone in numerous industries. With its stability, adaptability, and long shelf life, it offers a reliable solution for construction, detergents, foundry, textile, and water treatment sectors. By choosing reliable suppliers like Nova Silicate, businesses can ensure consistent quality, performance, and expert support.