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SMP Series Sodium Metasilicate Pentahydrate
RAW MATERIAL
SMP

SMP Series Sodium Metasilicate Pentahydrate

SMP Series Sodium Metasilicate Pentahydrate is a white crystalline alkaline powder used as a detergent builder, water softener, cleaning auxiliary, and industrial processing agent.

Chemical Name
Sodium Metasilicate Pentahydrate
Molecular Weight
212.14 g/mol
Molecular Formula
Na2SiO3.5H2O
EINECS
229-912-9
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PRODUCT OVERVIEW

Product Description

SMP Series Sodium Metasilicate Pentahydrate is a white crystalline, water-soluble alkaline powder used as an auxiliary material in detergent and industrial formulations. It provides cleaning, buffering, water-softening, emulsifying, and dispersing functions. In detergent systems, it can support soil removal and water conditioning while also being used in applications such as metal cleaning, paper processing, textile processing, and other industrial formulations. Sodium Metasilicate Pentahydrate is supplied as the pentahydrate form of sodium metasilicate and is characterized by its alkaline nature and good solubility in water.
PRODUCT PARAMETERS

General Parameters

Appearance
White crystalline powder
Melting Point
72°C
Boiling Point
118°C
Density
2.61 g/m³
Solubility
Soluble in water; approximately 50 g per 100 g water at 20°C
KEY PROPERTIES

Product Characteristics

Strong alkaline cleaning and buffering properties.
Provides water-softening performance in detergent systems.
Helps emulsify fats and oils and disperse inorganic soils.
Suitable as an auxiliary builder in detergent formulations.
Can support metal-cleaning and rust-removal formulations.
TECHNICAL SPECIFICATIONS

Specification Data

Specification Standard
Sodium Oxide (Na2O) by wt % 28.7-30.00
SiO2 by wt % 27.8-29.2
Water Insoluble by wt % 0.05 max
Fe by ppm 100 max
Whiteness % 80 min
Bulk Density, g/cc 0.80-0.97
pH of 1.0% Solution 12-13
Particle Size by wt % (40-100 mesh) 90 min
APPLICATIONS

Typical Uses

✓
Used as an auxiliary material in detergent formulations.
✓
Used as a water-softening component in detergent systems.
✓
Used in oil-drilling formulations as a drilling-mud thickening auxiliary.
✓
Used in paper-making and porcelain processing.
✓
Used in metal-cleaning and rust-removal formulations.
✓
Used as a textile dyeing and printing auxiliary for oil removal.
✓
Used in flameproofing, plastic processing, water-retention, and water-reducing applications.
STORAGE & HANDLING

Handling Guidance

Store in suitable sealed packaging under appropriate dry storage conditions. Protect the product from moisture, direct sunlight, contamination, and incompatible materials. Storage and handling requirements should follow the applicable supplier SDS, COA, and technical documentation.
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