Formulation Guide: Concentrated Liquid Laundry Detergent & Heavy Duty Laundry Powder with Anhydrous Sodium Metasilicate

This is the second article in our Technical Application Guide for Anhydrous Sodium Metasilicate. It provides two complete working formulations for concentrated liquid laundry detergent and heavy-duty laundry powder, using Anhydrous Sodium Metasilicate as the key alkaline builder.

Formulation 1: Concentrated Liquid Laundry Detergent

Product Positioning

• Application: High-concentration machine laundry detergent
• Product Type: Liquid laundry detergent
• Active Matter: ≥15%
• Recommended pH Range: 10.5-11.5

This formulation is designed for concentrated laundry detergent systems requiring strong detergency, good stability and excellent washing performance.

Recommended Zhongzhi Product Grade

Anhydrous Sodium Metasilicate Powder – Premium Grade

Recommended characteristics:

• High purity
• Fast dissolution
• Low insoluble matter
• Good transparency after dissolution
• Suitable for liquid detergent systems

Formula Composition

Manufacturing Procedure

Step 1

Heat deionized water to 40-45℃. Add AES and mix until completely dissolved.

Step 2

Add CAPB and AEO-9. Continue mixing until the surfactant system becomes uniform.

Step 3

Slowly add Anhydrous Sodium Metasilicate Powder Premium Grade while maintaining continuous agitation. Mix for approximately 30 minutes until fully dissolved.

Step 4

Add sodium carbonate, sodium citrate, sodium polyacrylate. Mix until homogeneous.

Step 5

Cool the system below 35℃. Add enzymes, preservative, optical brightener, fragrance, colorant. Mix thoroughly.

Step 6

Allow the product to stand for deaeration. Filter and fill into containers.

Technical Specifications

Formulation 2: Heavy Duty Laundry Powder (Machine & Hand Wash)

Product Positioning

• Application: Heavy-duty laundry powder for machine washing and hand washing

Main Performance:

• Strong oil stain removal
• Protein stain removal
• High alkalinity cleaning system
• Suitable for industrial-scale powder detergent production

• Active Matter: ≥18%
• Recommended pH Range: 11.0-12.0

Recommended Zhongzhi Product Grade

Anhydrous Sodium Metasilicate Granular – Premium Grade

Recommended characteristics:

• Particle size: 18-60 mesh
• Excellent flowability
• Suitable for detergent powder granulation
• Good alkalinity contribution
• Low moisture absorption

Formula Composition

Manufacturing Procedure

Step 1: Dry Mixing

Premix Anhydrous Sodium Metasilicate Granular Grade, sodium carbonate, 4A zeolite, CMC, TAED until evenly distributed.

Step 2: Add Functional Components

Add AES powder, sodium sulfate, enzyme preparation, coated sodium percarbonate. Mix carefully to avoid damaging enzyme activity.

Step 3: Granulation

Add approximately 8-12% deionized water. Perform high-speed mixing or kneading until suitable granulation conditions are achieved.

Step 4: Drying

Spray drying conditions:

Step 5: Final Processing

After drying: spray fragrance, add optical brightener, screen particles, package finished product.

Technical Specifications

Application Summary

In heavy-duty laundry powder systems, Anhydrous Sodium Metasilicate acts as a key alkaline builder and performance enhancer.

The recommended dosage is typically 15-25%, depending on:

• Cleaning strength requirements
• Surfactant system
• Water hardness
• Production cost target

AnhydrousSodiumMetasilicate · LiquidLaundryDetergent · LaundryPowder · DetergentFormulation · HeavyDutyDetergent · AlkalineBuilder · CleaningChemical · IndustrialDetergent