Sodium Metasilicate Pentahydrate
Crystalline sodium metasilicate pentahydrate with 28.7-30% Na2O. Ideal for concentrated detergents, metal cleaners, construction chemicals, and oil drilling fluids. Premium and First Grade available.
Technical Specifications
Available in Granular and Powder forms, Premium Grade and First Grade.
| Na2O, % | 28.70–30.00 (Premium) / 28.50–30.00 (First Grade) |
| SiO2, % | 27.80–29.20 (Premium) / 27.50–29.20 (First Grade) |
| Fe, % | ≤ 0.0090 (Premium) / ≤ 0.0150 (First Grade) |
| Bulk Density, g/cm3 | 0.8 – 1.0 |
| Particle Size | 14–60 mesh ≥ 95% (Granular) / <60 mesh ≥ 15% (Powder) |
| Whiteness | ≥ 80 (Granular Premium) / ≥ 85 (Powder Premium) |
| Water Insoluble, % | ≤ 0.05 (Premium) / ≤ 0.10 (First Grade) |
| Transparency, % | ≥ 85 (Premium) / ≥ 75 (First Grade) |
Properties
Sodium metasilicate pentahydrate is a crystalline solid with bulk density 0.8–1.0 g/mL and melting point 72.2°C. It is readily soluble in water and dilute alkali, insoluble in alcohol and acid. The aqueous solution is alkaline with strong detergency, excellent pH buffering, and good emulsifying, dispersing, wetting, and penetrating properties.
Applications
- Concentrated laundry powders, liquid detergents, laundry pastes, dry cleaners
- Metal surface cleaners, rust inhibitors, scale removers, electrical component cleaners
- Construction: acid-resistant mortar and concrete, cement accelerators
- Papermaking: adhesives, waste paper deinking, surface treatment agents
- Textiles: printing and dyeing auxiliaries, fabric pre-treatment agents
- Oil and gas drilling: mud consistency regulators and deflocculants
- Soap fillers, egg preservatives, molecular sieves, fire-resistant materials
Inquiry
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