🧺 Special Bleaches for White and Colored Fabrics – Production, Formulation and Properties
Overview:
Special Bleaches for White and Colored Fabrics are advanced non-chlorine bleaching formulations that combine oxidative cleaning and color protection technologies.
They are specifically developed to brighten white fabrics and revive colored textiles without causing fading, yellowing, or fiber degradation.
Unlike traditional chlorine-based bleaches, these products rely on oxygen-based or activated peroxide systems that release active oxygen gradually, ensuring gentle but effective stain removal.
They are ideal for both manual washing and automatic machine applications, providing fabric care, hygiene, and long-lasting brightness.
Production and Formulation:
The Special Bleach Manufacturing Process focuses on stabilized peroxide chemistry, temperature-controlled oxidation, and color-safe formulation balance.
These bleaches can be produced in powder or liquid form, depending on the application and desired strength.
Powder Formulations
Typical formulation components include:
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Active Oxygen Source: Sodium percarbonate or sodium perborate – provide oxidative cleaning power.
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Activator: TAED (tetraacetylethylenediamine) – enhances bleach efficiency at low temperatures.
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Builders: Sodium carbonate, sodium citrate – maintain alkalinity and improve cleaning.
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Stabilizers: Magnesium silicate, sodium silicate – prevent peroxide decomposition.
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Optical Brighteners: Add whiteness and luminosity to fabrics.
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Anti-Graying Agents: CMC – prevent soil redeposition.
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Perfume and Dyes (optional): Provide fragrance and color identity.
Manufacturing steps:
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Dry Blending: Solid ingredients are mixed until homogeneous.
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Granulation (optional): Improves handling and solubility.
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Screening and Cooling: Achieves uniform powder structure.
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Quality Control: Tests for oxygen content, pH, and brightness efficiency.
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Packaging: Packed in laminated moisture-proof bags.
Liquid Formulations
Typical formulation components include:
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Hydrogen Peroxide (stabilized): Main bleaching agent.
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Chelating Agents: EDTA, phosphonates – prevent metal-catalyzed decomposition.
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pH Adjusters: Sodium hydroxide or citric acid – stabilize peroxide activity.
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Nonionic Surfactants: Improve wetting and fabric penetration.
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Fragrance and Preservatives: Enhance product performance and longevity.
Manufacturing steps:
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Blending: Hydrogen peroxide is mixed with stabilizers under cooling.
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pH Control: Maintained between 4.5–6.0 for optimum stability.
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Homogenization: Ensures uniform clarity and consistency.
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Filling: Bottled in opaque HDPE containers to prevent light degradation.
Properties:
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Active Ingredient: Sodium percarbonate or hydrogen peroxide.
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Form: Powder or liquid (clear or opaque).
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Foam Level: Low; machine-compatible.
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pH (1% solution): 8–10 for powders; 4.5–6.0 for liquids.
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Temperature Range: Active from 30°C to 60°C.
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Fabric Safety: Suitable for white, pastel, and colored textiles.
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Solubility: Excellent in warm and cold water.
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Eco-Aspect: 100% chlorine-free and biodegradable.
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Storage Stability: 12–18 months under cool, dry conditions.
Advantages of Special Bleaches for White and Colored Fabrics:
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Provides deep cleaning and whitening without damaging colors.
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Safe for mixed-color laundry and delicate materials.
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Effective at low washing temperatures, saving energy.
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Chlorine-free and non-toxic to fabrics and skin.
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Prevents gray or yellow tint buildup on whites.
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Compatible with enzyme and color-safe detergents.
Summary:
Special Bleaches for White and Colored Fabrics combine oxygen-based chemistry and fabric-protective formulation design to achieve powerful yet gentle cleaning results.
These modern bleaches maintain the brightness of whites and the vibrancy of colors while ensuring fiber safety and environmental responsibility.
They represent the next generation of eco-conscious laundry care, offering superior performance and sustainability compared to traditional chlorine bleaches.
