⚪ Low-Temperature White Laundry Powders: Overview and Properties
🔹 Overview
Low-temperature white laundry powders are advanced detergent formulations designed to deliver effective whitening and cleaning performance at lower washing temperatures (20–40 °C).
They use enzyme systems, oxygen bleach activators, and specialized surfactants to maintain high stain removal efficiency without requiring hot water.
These formulations are both energy-efficient and fabric-friendly, making them ideal for eco-conscious consumers and professional laundries seeking reduced energy costs and improved fabric care.
⚗️ Chemical Composition
Typical low-temperature white laundry powder formulations include:
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Anionic surfactants: LAS, α-olefin sulfonates – for soil and grease removal
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Nonionic surfactants: Alcohol ethoxylates – enhance cleaning at low temperatures
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Builders: Sodium carbonate, sodium silicate, zeolite, or sodium citrate
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Oxygen bleach system: Sodium percarbonate + TAED (Tetraacetylethylenediamine) as a low-temp activator
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Enzymes:
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Protease – removes protein stains (blood, milk)
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Amylase – breaks down starch residues
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Lipase – targets oil and fat-based stains
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Cellulase – maintains fabric brightness and softness
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Optical brighteners: Stilbene derivatives for whiteness enhancement
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Anti-redeposition agents: CMC or acrylic polymers
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Fragrance and stabilizers: Ensure long-term freshness and product stability
⚙️ Physical and Technical Properties
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Appearance: Free-flowing white or off-white powder
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Bulk Density: 0.6 – 0.9 g/cm³
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Moisture Content: ≤ 5 %
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pH (1 % solution): 8 – 10 (mildly alkaline)
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Active Matter Content: 20 – 35 %
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Foam Level: Medium (machine compatible)
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Effective Temperature Range: 20 °C – 60 °C
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Bleaching System: Oxygen-based, chlorine-free
🔹 Performance Characteristics
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Provides strong stain removal even at low temperatures
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Ensures fabric brightness and whiteness retention
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Reduces energy consumption and fiber damage
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Contains temperature-activated bleach and enzymes for cold washing
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Compatible with automatic washing machines and short wash cycles
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Environmentally friendly and suitable for eco-labeled detergent lines
🔹 Applications
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Household laundry powders for white and mixed fabrics
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Automatic and high-efficiency washing machines
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Low-energy and quick-wash cycles
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Eco-friendly and sustainable detergent ranges
⚠️ Storage and Handling
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Store in a cool, dry, and ventilated place
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Keep away from moisture, direct sunlight, and acids
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Shelf life: typically 24 months under proper storage conditions
💡 Summary
Low-temperature white laundry powders offer superior whitening and cleaning performance through enzyme and oxygen-bleach synergy, even in cold water.
They combine energy efficiency, environmental responsibility, and high cleaning power, making them ideal for modern household and industrial washing applications where low-temperature effectiveness is essential.
