Heavy-duty laundry powder detergents are high-performance cleaning formulations designed for industrial laundries, hotels, hospitals, and workwear applications where fabrics are exposed to heavy soil, grease, oil, and protein stains.
They contain powerful cleaning agents, builders, and bleaching systems that provide deep cleaning, stain removal, and fabric whitening even under demanding washing conditions.
🔹 Key Chemical Composition
Heavy-duty laundry powders are typically composed of:
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Anionic surfactants: e.g. Linear Alkylbenzene Sulfonate (LAS) for grease and particulate soil removal
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Nonionic surfactants: e.g. alcohol ethoxylates for oily stain removal
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Builders: Sodium tripolyphosphate (STPP), zeolite, sodium carbonate, and silicate for water softening and alkalinity
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Bleaching agents: Sodium percarbonate or sodium perborate, sometimes with TAED activator
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Optical brighteners: To enhance whiteness and brightness
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Anti-redeposition agents: To prevent soil from redepositing on fabrics
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Enzymes (optional): Protease, amylase, or lipase for biological stain removal
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Perfume and colorants: For fresh scent and product differentiation
⚙️ Technical and Physical Properties
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Appearance: Free-flowing white or off-white powder
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Bulk Density: 0.7 – 0.9 g/cm³ (depending on formulation)
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pH (1% aqueous solution): 9 – 11
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Solubility: Fully soluble in water
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Active Matter Content: 20 – 35% (typical industrial grade)
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Moisture Content: Below 5%
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Bleaching System: Oxygen-based, chlorine-free
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Washing Temperature Range: 40 – 90 °C
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Foam Level: Medium to low (suitable for automatic machines)
🔹 Performance Characteristics
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Excellent soil and grease removal from cotton and polyester fabrics
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High detergency and emulsification capacity for oil-based dirt
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Maintains fabric brightness with optical brighteners
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Prevents greying through anti-redeposition polymers
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Effective in hard water due to builders and sequestering agents
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Long-lasting fresh scent and hygiene performance
🔹 Applications
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Industrial laundries (hotels, hospitals, uniforms, institutional cleaning)
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Household detergents for white and heavily soiled fabrics
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Automatic washing machines and pre-wash formulations
⚠️ Storage and Handling
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Store in a cool, dry, and well-ventilated area.
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Avoid exposure to moisture to prevent caking.
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Handle with gloves to prevent skin irritation.
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Shelf life: typically 24 months in sealed packaging.
💡 Summary
Heavy-duty laundry powder detergents are high-alkaline, oxygen-bleach-based formulations designed for maximum cleaning performance on heavily soiled textiles.
Their combination of surfactants, builders, bleaching agents, and brighteners ensures deep cleaning, whiteness retention, and high washing efficiency, making them essential for industrial and institutional laundry systems.
