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MSD Series Modified Sodium Disilicate
RAW MATERIAL
MSD

MSD Series Modified Sodium Disilicate

MSD Modified Sodium Disilicate is a granular detergent builder designed to support water softening, pH buffering, dispersion, surfactant compatibility, and formulation performance in powder detergent and industrial cleaning systems.

Chemical Name
Modified Sodium Disilicate
Molecular Formula
Na2O·2SiO2
EINECS
215-687-4
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PRODUCT OVERVIEW

Product Description

MSD Series Modified Sodium Disilicate is an inorganic detergent builder developed for powder detergent, textile, industrial cleaning, and related formulation applications. The material provides strong calcium-ion exchange performance, helping reduce the effects of water hardness while supporting detergent efficiency and formulation stability. MSD also offers useful pH-buffering characteristics together with compatibility across a range of surfactant and bleaching systems. It is available in granular and fine grades to accommodate different processing and particle-size requirements. Its combination of water-softening capability, controlled alkalinity, particle characteristics, and formulation compatibility makes it suitable for modern detergent systems, including applications where phosphate-based builders are being reduced or replaced.
PRODUCT PARAMETERS

General Parameters

Appearance
White granular powder
Available Grades
Granular / Fine
KEY PROPERTIES

Product Characteristics

Provides strong water-softening performance through calcium-ion exchange.
Supports detergent performance under low-temperature washing conditions.
Offers useful pH-buffering characteristics in compatible detergent systems.
Compatible with a broad range of surfactant-based formulations.
Suitable for detergent systems containing compatible bleaching components.
Supports dispersion and anti-sediment performance in powder detergent formulations.
Available in granular and fine particle grades for different processing requirements.
TECHNICAL SPECIFICATIONS

Specification Data

Specification Granular Fine
Solid content by wt % 95 min 95 min
Ca²⁺ exchange capacity (CaCO3), mg/g 550 min 550 min
Mg²⁺ exchange capacity (MgCO3), mg/g 100 min 100 min
SiO2 by wt % 25 min 25 min
Na2O + SiO2 by wt % 50 min 50 min
pH value (25°C, 1% solution) 12.5 max 12.5 max
Whiteness by wt % 85 min 85 min
Moisture by wt % 5 max 5 max
Water insoluble by wt % 1.5 max 1.5 max
Bulk density, g/cm³ 0.35 - 0.45 0.48 - 0.60
S > 50 mesh 18 - 25 0 - 5
80 < S < 50 mesh 30 - 40 18 - 27
80 < S < 100 mesh 18 - 25 40 - 50
S < 100 mesh 25 max 25 min
APPLICATIONS

Typical Uses

✓
Powder detergent formulations
✓
Detergent builder systems requiring water-softening support
✓
Textile and dye-processing formulations
✓
Industrial cleaning formulations
✓
Selected porcelain and ceramic-processing applications
✓
Phosphate-reduced detergent formulations requiring an alternative builder component
STORAGE & HANDLING

Handling Guidance

Storage, handling, shelf-life, packaging, and safety requirements should follow the current supplier SDS, COA, and approved product documentation for the specific MSD grade.
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