Tetraacetylethylenediamine (TAED) – Low-Temp Oxygen Bleach Activator
Tetraacetylethylenediamine (TAED) – High-Performance Oxygen Bleach Activator
Tetraacetylethylenediamine (TAED), also known as N,N,N′,N′-tetraacetylethylenediamine, is a white crystalline solid with a mild acetic odor. It is a key ingredient in modern oxygen-based bleaching systems, specifically designed to activate hydrogen peroxide (peroxide) at lower temperatures – typically between 40 °C and 60 °C.
Chemistry and Mechanism:
TAED reacts with hydrogen peroxide in the wash liquor to form peracetic acid (peroxyacetic acid), a powerful oxidizing agent. Peracetic acid is much more reactive than hydrogen peroxide alone, providing effective bleaching, stain removal, and disinfection even in cold or warm water. This reaction is pH-dependent and works best in alkaline conditions (pH 9–11).
Key Benefits:
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Energy saving: Enables effective bleaching at low temperatures, reducing energy consumption.
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Stain removal: Excellent for removing tea, coffee, fruit, red wine, and grass stains.
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Whiteness preservation: Prevents yellowing and maintains fabric brightness.
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Compatibility: Stable in granular detergents, tabs, and powders; does not interfere with enzymes, silicates, builders, or surfactants.
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Environmental safety: Fully biodegradable; degrades into ethylenediamine and acetic acid, which are harmless to aquatic life.
Applications:
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Laundry detergents (powders, tablets, and pods)
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Automatic dishwashing (ADW) formulations
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Industrial textile bleaching
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Household stain removers and pre-soak products
Typical Use Level:
1–5% by weight in detergent formulations, depending on desired bleaching performance and peracid release.
Physical Properties:
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CAS Number: 10543-57-4
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Molecular Weight: 228.25 g/mol
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Melting Point: 147–151 °C
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Purity: ≥99%
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Appearance: White to off-white crystalline powder
Storage and Handling:
Store in a cool, dry, and well-ventilated area. Keep away from moisture, acids, and strong oxidizers. Stable under normal conditions. Shelf life: 24 months when stored properly.
Packaging:
Available in 100 g, 500 g, 1 kg, and 25 kg bags or drums. Custom packaging upon request.
