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:
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Breaking down grease and oils
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Softening water
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Acting as a builder and emulsifier
Used in products like:
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Degreasers
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Dishwashing powders
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Laundry detergents
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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
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✔️ Highly alkaline – excellent cleaning and degreasing power
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✔️ Free of water – higher chemical efficiency and shelf life
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✔️ Versatile – suitable for multiple industrial applications
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✔️ Non-toxic and biodegradable – eco-friendlier than phosphates
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✔️ Improves corrosion resistance in metal systems
⚠️ Safety and Handling
Due to its alkaline nature, sodium metasilicate anhydrous should be handled with care:
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Use gloves, goggles, and protective clothing
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Avoid contact with skin and eyes
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Store in a dry, cool area, sealed from moisture
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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.
