Description:
Denybleach 520 is a revolutionary peroxide-based bleaching agent that replaces chlorine bleaching in denim processing. It combines desizing, bleaching, and neutralization in one step, saving time, water, and energy while delivering brighter, cleaner finishes.
Keywords:
Denybleach 520, peroxide bleaching agent, denim bleaching chemical, chlorine-free bleaching, eco denim washing, hydrogen peroxide bleaching, sulfur black denim bleaching, sustainable denim processing, denim laundry chemicals, textile bleaching auxiliaries
In denim garment processing, traditional methods such as desizing, enzyme washing, chlorine bleaching, and neutralization require multiple steps, consuming large amounts of water, time, and energy. Denybleach 520 completely redefines this workflow. It is an innovative peroxide-based bleaching agent that simplifies the denim washing process — enabling desizing, bleaching, and neutralization in one system while achieving brilliant and sustainable bleaching effects.
Denybleach 520 is a revolutionary bleaching agent designed to simplify and enhance the denim bleaching process. Its advanced formulation allows simultaneous decoloration and desizing, significantly improving process efficiency and reducing production costs. By using hydrogen peroxide (H₂O₂) as the main bleaching component, Denybleach 520 delivers a clean, bright tone without the drawbacks of chlorine-based bleaching.
Appearance: Yellowish red transparent liquid
pH: 4.0 – 7.0
Solubility: Soluble in all concentrations of water
Bleaching Temperature: 50–55°C
Time: 5–30 minutes (optimal at 30 minutes)
Note: Add H₂O₂ at the final stage, after caustic soda is fully dissolved in the washing machine.
✅ Multi-Step Process Simplification – Combines desizing, bleaching, and neutralization, eliminating separate desizing and chlorine bleaching steps.
✅ Energy & Resource Efficiency – Saves time, water, and energy, significantly reducing operational costs.
✅ Bright and Clean Finish – Produces brighter, more vibrant tones compared to chlorine, which often gives a dull or dim whiteness.
✅ Superior Performance on Sulfur-Black Denim – Achieves powerful decoloration on indigo and sulfur black denim at just 50°C, where standard H₂O₂ bleaching typically fails.
✅ Safer and More Stable Than Chlorine –
No irritating or hazardous gas emissions
No odor or yellowing after neutralization
Peroxide remains stable even in hot conditions
Environmentally friendly and worker-safe
1. Preparation at Room Temperature
Add the following chemicals sequentially:
Denybleach 520: 1–2 g/L
Caustic soda (100%): 2–4 g/L (adjust pH to ~11.8)
Hydrogen peroxide (50%): 3.5–10 g/L (add last)
2. Raise Temperature: Heat to 50–55°C and maintain for 5–30 minutes (optimal at 30 minutes).
Liquor ratio: 1:10
3. Neutralization: Use 2 g/L acetic acid, followed by a neutralization and cellulase washing in the same bath.
4. Rinse: Complete with thorough rinsing to achieve a bright, clean finish.
Packaging: 120 kg or 200 kg plastic drums
Storage: Keep at 30°C or below, in sealed original packaging to maintain product stability and extended shelf life.
With its smart, integrated peroxide bleaching system, Denybleach 520 is a true game-changer for denim laundries. It not only enhances bleaching quality but also minimizes the environmental footprint and operational complexity.
Compared to chlorine bleaching, Denybleach 520 provides cleaner, brighter, and more sustainable results, making it the preferred solution for modern denim finishing operations seeking both efficiency and eco-responsibility.
Denybleach 520 embodies the future of denim bleaching — efficient, clean, and eco-friendly.
By combining multiple steps into one simplified process and replacing chlorine with stable peroxide chemistry, it helps denim processors achieve high-quality finishes with minimal waste.
For textile laundries striving toward sustainability and performance, Denybleach 520 is the smart choice for next-generation denim processing.
Description:
Denybleach 520 is a revolutionary peroxide-based bleaching agent that replaces chlorine bleaching in denim processing. It combines desizing, bleaching, and neutralization in one step, saving time, water, and energy while delivering brighter, cleaner finishes.
Keywords:
Denybleach 520, peroxide bleaching agent, denim bleaching chemical, chlorine-free bleaching, eco denim washing, hydrogen peroxide bleaching, sulfur black denim bleaching, sustainable denim processing, denim laundry chemicals, textile bleaching auxiliaries
In denim garment processing, traditional methods such as desizing, enzyme washing, chlorine bleaching, and neutralization require multiple steps, consuming large amounts of water, time, and energy. Denybleach 520 completely redefines this workflow. It is an innovative peroxide-based bleaching agent that simplifies the denim washing process — enabling desizing, bleaching, and neutralization in one system while achieving brilliant and sustainable bleaching effects.
Denybleach 520 is a revolutionary bleaching agent designed to simplify and enhance the denim bleaching process. Its advanced formulation allows simultaneous decoloration and desizing, significantly improving process efficiency and reducing production costs. By using hydrogen peroxide (H₂O₂) as the main bleaching component, Denybleach 520 delivers a clean, bright tone without the drawbacks of chlorine-based bleaching.
Appearance: Yellowish red transparent liquid
pH: 4.0 – 7.0
Solubility: Soluble in all concentrations of water
Bleaching Temperature: 50–55°C
Time: 5–30 minutes (optimal at 30 minutes)
Note: Add H₂O₂ at the final stage, after caustic soda is fully dissolved in the washing machine.
✅ Multi-Step Process Simplification – Combines desizing, bleaching, and neutralization, eliminating separate desizing and chlorine bleaching steps.
✅ Energy & Resource Efficiency – Saves time, water, and energy, significantly reducing operational costs.
✅ Bright and Clean Finish – Produces brighter, more vibrant tones compared to chlorine, which often gives a dull or dim whiteness.
✅ Superior Performance on Sulfur-Black Denim – Achieves powerful decoloration on indigo and sulfur black denim at just 50°C, where standard H₂O₂ bleaching typically fails.
✅ Safer and More Stable Than Chlorine –
No irritating or hazardous gas emissions
No odor or yellowing after neutralization
Peroxide remains stable even in hot conditions
Environmentally friendly and worker-safe
1. Preparation at Room Temperature
Add the following chemicals sequentially:
Denybleach 520: 1–2 g/L
Caustic soda (100%): 2–4 g/L (adjust pH to ~11.8)
Hydrogen peroxide (50%): 3.5–10 g/L (add last)
2. Raise Temperature: Heat to 50–55°C and maintain for 5–30 minutes (optimal at 30 minutes).
Liquor ratio: 1:10
3. Neutralization: Use 2 g/L acetic acid, followed by a neutralization and cellulase washing in the same bath.
4. Rinse: Complete with thorough rinsing to achieve a bright, clean finish.
Packaging: 120 kg or 200 kg plastic drums
Storage: Keep at 30°C or below, in sealed original packaging to maintain product stability and extended shelf life.
With its smart, integrated peroxide bleaching system, Denybleach 520 is a true game-changer for denim laundries. It not only enhances bleaching quality but also minimizes the environmental footprint and operational complexity.
Compared to chlorine bleaching, Denybleach 520 provides cleaner, brighter, and more sustainable results, making it the preferred solution for modern denim finishing operations seeking both efficiency and eco-responsibility.
Denybleach 520 embodies the future of denim bleaching — efficient, clean, and eco-friendly.
By combining multiple steps into one simplified process and replacing chlorine with stable peroxide chemistry, it helps denim processors achieve high-quality finishes with minimal waste.
For textile laundries striving toward sustainability and performance, Denybleach 520 is the smart choice for next-generation denim processing.
