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Active Poly Sodium Metasilicate (APSM)
RAW MATERIAL
APSM

Active Poly Sodium Metasilicate (APSM)

APSM is a white granular detergent builder designed to support water softening, surfactant performance, stain removal, dispersion, and formulation stability in powder detergent systems.

Chemical Name
Active Poly Sodium Metasilicate
Molecular Formula
Na2O·nSiO2·nH2O
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PRODUCT OVERVIEW

Product Description

Active Poly Sodium Metasilicate (APSM) is a granular inorganic builder developed for powder detergent and industrial cleaning formulations. The material provides strong calcium and magnesium ion-exchange performance, helping reduce the effects of water hardness and supporting the overall efficiency of detergent systems. APSM also offers good compatibility with different surfactant systems while contributing to dispersion, emulsification, suspension, anti-redeposition, and pH-buffering performance. Its controlled whiteness, granular flow properties, water solubility, and formulation stability make it suitable for modern detergent powder systems, including applications where phosphate reduction or alternative builder systems are desired.
KEY PROPERTIES

Product Characteristics

Provides strong calcium and magnesium ion-exchange performance for water-softening support.
Offers good compatibility with a broad range of surfactant systems.
Supports dispersion, emulsification, suspension, and anti-redeposition performance in detergent formulations.
Provides useful alkalinity and pH-buffering characteristics in compatible cleaning systems.
Designed with good whiteness, granular flowability, and formulation stability.
Suitable for powder detergent builder systems where efficient cleaning and water-hardness control are required.
TECHNICAL SPECIFICATIONS

Specification Data

Specification Standard Typical Value
Ca²⁺ exchange (mg CaCO3/g), 35°C, 20 min 320 min 337
Mg²⁺ exchange, 35°C, 20 min 330 min 332
Na2O + SiO2 by wt % 75 min 76
pH value (25°C, 1% solution) 11 max 10.8
Whiteness by wt % 85 min 90
Water insoluble by wt % 1.5 max 0.8
Bulk density (g/cm³) 0.48 - 0.60 0.55
Particle size (through 20 mesh sieve) by wt % 90 min 92
APPLICATIONS

Typical Uses

✓
Powder detergent formulations
✓
Laundry detergent builder systems
✓
Low-phosphate and phosphate-reduced detergent formulations
✓
Industrial and institutional cleaning formulations
✓
Detergent systems requiring water-softening and hardness-control support
✓
Cleaning formulations requiring dispersion and anti-redeposition performance
STORAGE & HANDLING

Handling Guidance

Storage, handling, shelf-life, and safety requirements should follow the current supplier SDS, COA, and applicable industrial regulations. Refer to approved supplier documentation before storage or handling.
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