⚪ Chlorine-Bleach Based White Laundry Powders: Overview and Properties
🔹 Overview
Chlorine-bleach based white laundry powders are powerful detergent formulations designed for deep cleaning, whitening, and disinfection of heavily soiled or stained fabrics.
Their active ingredients — such as sodium hypochlorite, calcium hypochlorite, or sodium dichloroisocyanurate (NaDCC) — release chlorine, which oxidizes and destroys stains, microorganisms, and unpleasant odors.
These detergents are widely used in industrial and institutional laundries (hotels, hospitals, restaurants) where intensive cleaning and hygienic whiteness are required.
⚗️ Chemical Composition
Typical chlorine-bleach based laundry powder formulations include:
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Anionic surfactants: LAS (Linear Alkylbenzene Sulfonate) for soil and grease removal
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Builders: Sodium carbonate, sodium silicate — for alkalinity and water softening
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Bleaching agents: Sodium hypochlorite, calcium hypochlorite, or NaDCC (chlorine source)
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Stabilizers: Sodium sulfate or sodium chloride to control chlorine release
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Anti-redeposition agents: CMC (carboxymethyl cellulose)
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Optical brighteners: Limited or excluded (since chlorine may degrade them)
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Fragrance and corrosion inhibitors: Mask chlorine odor and protect metals
⚙️ Physical and Technical Properties
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Appearance: White or slightly yellowish powder
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Bulk Density: 0.6 – 0.9 g/cm³
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Moisture Content: ≤ 4 %
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pH (1 % solution): 10 – 12 (strongly alkaline)
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Available Chlorine Content: 2 – 10 % (depending on formulation)
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Foam Level: Low to medium
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Washing Temperature Range: 40 °C – 90 °C
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Solubility: Fully soluble in water
🔹 Performance Characteristics
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Provides powerful whitening and stain removal for white fabrics
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Offers strong antibacterial and disinfecting action
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Destroys organic stains, mold, and odors through oxidation
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Suitable for cotton and durable blended fabrics
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Not recommended for colored or delicate textiles
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Ideal for industrial laundry applications requiring hygiene and brightness
🔹 Applications
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Hospitals, hotels, and institutional laundries
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Restaurants and catering textiles
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Workwear and heavily soiled white fabrics
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Bleach boosters in professional washing systems
⚠️ Storage and Handling
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Store in a cool, dry, well-ventilated place away from moisture
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Avoid contact with acids, ammonia, and reducing agents
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Use protective equipment (gloves, mask) during handling
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Shelf life: 12–18 months under optimal storage conditions
💡 Summary
Chlorine-bleach based white laundry powders deliver maximum whitening, stain oxidation, and disinfection, making them ideal for industrial and institutional laundry operations.
Their strong oxidizing action ensures brilliant whiteness and hygiene, though care must be taken due to their high alkalinity and potential fiber sensitivity.
