Hydrogen Peroxide 50% for Textile Bleaching
CAS Number: 7722-84-1
Hydrogen peroxide (50% technical grade) is the primary bleaching agent for cotton, linen, and viscose fibers in the textile industry. Under alkaline conditions with a peroxide stabilizer, it selectively oxidizes and destroys natural color pigments without significant fiber damage. Generates no toxic chlorinated by-products, making it the environmentally preferred bleaching agent over sodium hypochlorite.
Technical Specifications
| pH (pure) | 2–4 |
| appearance | Colorless liquid |
| active content (%) | ≥50 |
| iron content (ppm) | ≤0.5 |
| acidity (as H2SO4, %) | ≤0.05 |
| density (g/mL, 20°C) | 1.19–1.20 |
Applications
- Bleaching of cotton woven and knitted fabric under alkaline conditions
- Combined scouring-bleaching (single-bath) process for cotton
- Bleaching of linen and hemp fabric for natural white
- Bleaching of viscose rayon and lyocell fiber
- Pre-dyeing whiteness improvement for light shade dyeing
Key Features
- Most widely used textile bleaching agent with proven safety profile
- Eco-friendly: decomposes to water and oxygen with no persistent residues
- Selective bleaching with minimal cellulose fiber degradation
- Compatible with enzyme-assisted bleaching processes (catalase cleanup)
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CAS Number
7722-84-1
Category
Textile Dyeing AuxiliariesAvailability
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