Sodium Metasilicate Anhydrous
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Sodium Metasilicate Anhydrous: A Powerful Industrial Alkaline Agent

Sodium Metasilicate Anhydrous (Na₂SiO₃) is a highly effective alkaline salt widely used in numerous industrial and commercial applications. Unlike its hydrated counterparts, such as pentahydrate and nonahydrate forms, anhydrous sodium metasilicate is free from water content, making it more concentrated and chemically reactive. Its powerful properties make it ideal for use in cleaning agents, ceramics, detergents, water treatment, and corrosion control.

This white, crystalline powder dissolves readily in water to produce a highly alkaline solution, which effectively removes grease, oil, dirt, and other organic residues. Due to its versatility, cost-efficiency, and environmental compatibility, sodium metasilicate anhydrous is a preferred raw material in the formulation of heavy-duty cleaning products and industrial formulations.

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Description

🔬 Specifications of Sodium Metasilicate Anhydrous

 

Property Specification
Chemical Name Sodium Metasilicate Anhydrous
Chemical Formula Na₂SiO₃
CAS Number 6834-92-0
Appearance White, free-flowing crystalline powder
Purity (Na₂SiO₃) ≥ 98%
Na₂O Content ~ 50%
SiO₂ Content ~ 48–50%
pH (1% solution) 12.4 – 13.4
Solubility Easily soluble in water
Bulk Density 600–800 kg/m³
Packaging 25 kg bags, 50 kg drums, jumbo bags
Shelf Life 12–24 months in dry, sealed packaging

🏭 Applications of Sodium Metasilicate Anhydrous

1. Detergents and Cleaners

Sodium metasilicate anhydrous is a key ingredient in industrial and institutional cleaning agents. It enhances cleaning by:

  • Breaking down grease and oils

  • Softening water

  • Acting as a builder and emulsifier

Used in products like:

  • Degreasers

  • Dishwashing powders

  • Laundry detergents

  • Metal and floor cleaners

2. Ceramics and Refractories

In ceramics manufacturing, sodium metasilicate is used as a binder and deflocculant to improve slip properties, helping in the shaping and firing of tiles, bricks, and pottery.

3. Water Treatment

It functions as a corrosion inhibitor, especially in boiler systems, preventing scale and rust on metal surfaces.

4. Pulp and Paper Industry

Acts as a bleaching aid, helping to break down lignin and improve the brightness of paper products.

5. Construction Materials

Used as an additive in concrete and cement, it enhances bonding, increases durability, and improves chemical resistance.

✅ Key Benefits of Sodium Metasilicate Anhydrous

  • ✔️ Highly alkaline – excellent cleaning and degreasing power

  • ✔️ Free of water – higher chemical efficiency and shelf life

  • ✔️ Versatile – suitable for multiple industrial applications

  • ✔️ Non-toxic and biodegradable – eco-friendlier than phosphates

  • ✔️ Improves corrosion resistance in metal systems

⚠️ Safety and Handling

Due to its alkaline nature, sodium metasilicate anhydrous should be handled with care:

  • Use gloves, goggles, and protective clothing

  • Avoid contact with skin and eyes

  • Store in a dry, cool area, sealed from moisture

  • In case of spillage, clean with plenty of water while wearing PPE

📌 Conclusion

Sodium Metasilicate Anhydrous is a potent, versatile, and cost-effective chemical solution used in many industrial sectors. Its high alkalinity, detergent properties, and corrosion inhibition make it invaluable in manufacturing, cleaning, water treatment, and beyond. When handled properly, it delivers consistent, powerful results while maintaining environmental safety standards.

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