Sodium Metasilicate Anhydrous

Sodium Metasilicate Anhydrous

Sodium Metasilicate pentahydrate

CAS Number


Types of Packaging

  • sodium metasilicate pentahydrate granular
  • 25kgs/bag
  • 27 tons/20' FCL without pallet

HS Code:


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Sodium Metasilicate pentahydrate

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Test Items Standard Test result
Sodium oxide(Na2O)% 28.70-30.00 28.97
Silica(SiO2)% 27.80-29.20 28.97
Water insoluble% ≤0.05 0.03
Iron(Fe)ppm ≤100 50
Bulk density 0.80-0.97g/cc 0.95
ParticularSize % (16-30 mesh) ≥90 98
Whiteness ≥80 89
PH(1%Solution) ≥12.5±1.0% 12.5

Product Overview

Sodium metasilicate pentahydrate, white granules. Soluble in water and dilute lye; insoluble in alcohol and acid. The aqueous solution is alkaline. Easy to absorb moisture and deliquescence in exposed air. With detergent, emulsification, dispersion, wetting, permeability and pH buffering capacity.

Sodium metasilicate pentahydrate is a crystalline compound with the chemical formula Na2SiO3·5H2O. It is composed of sodium (Na), silicon (Si), oxygen (O), and water (H2O) molecules. The pentahydrate form indicates that it contains five molecules of water per molecule of sodium metasilicate.

Sodium metasilicate pentahydrate is a white, granular or powder-like substance with a high solubility in water. It has a basic pH and is alkaline in nature. It is commonly used in various industrial applications due to its unique properties.

One of the significant uses of sodium metasilicate pentahydrate is in cleaning products and detergents. It serves as a builder, helping to remove stains, grease, and dirt. It enhances the cleaning power of detergents by softening water and aiding in the dispersion of soils.

In addition to cleaning applications, sodium metasilicate pentahydrate is utilized in various industrial processes. It is employed as a corrosion inhibitor, especially in metal cleaning and surface treatment. It can help prevent rust and corrosion on metal surfaces.

Furthermore, sodium metasilicate pentahydrate finds application in ceramics production, where it acts as a binder and helps improve the strength and integrity of ceramic materials.

It's important to note that sodium metasilicate pentahydrate should be handled and used with care, following proper safety precautions and guidelines.


1. Widely used in various washing industries. In the washing industry, such as ultra-concentrated laundry powder, laundry detergent, laundry cream, dry cleaners, fiber whitening agents, fabric bleaching agents, etc., it is also widely used in metal surface cleaners, beer bottles, float solvent cleaners, and fully soluble After that, it can be used as metal rust inhibitor, scale cleaner, electrical device cleaner, and can be used in food industry detergents.

2. It can also be used as mud consistency adjuster and mud coagulant in crude oil and natural drilling and control mining projects.

3. In the construction industry, it is used as an accelerator for modulating acid-resistant mortar, acid-resistant concrete and cement.

4, in the paper industry can be used as a binder, waste paper peeling ink agent, paper surface treatment agent.

5. In textile industry, it can be used as printing and dyeing auxiliaries and fabric pre-treatment agent.

6, can also be used as soap fillers, detergents, egg fresheners, and molecular sieve vegetation, silicic acid and fireproof materials, etc.

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Sodium Metasilicate pentahydrate