Certifications: ISO 9001:2015
Reactive Red 21
Category: Reactive Dyes
CI Number: 18209
Chemical Class: Azo Dye (Vinyl Sulfone)
Form: Powder
Economical VS Red for General Use
Reactive Red 21 is a monoazo dye featuring a vinyl sulfone (VS) reactive system. It produces a neutral to slightly yellowish-red shade and is a highly economical and versatile choice for dyeing cellulosic fibres. The VS reactive group allows for flexible application across a range of temperatures and methods, from cold-pad-batch to high-temperature exhaust dyeing, providing a reliable and efficient dyeing performance for general-purpose textile colouration.
Applications- Exhaust Dyeing: A workhorse for dyeing cotton and viscose in pale to medium red shades.
- Continuous Dyeing: Suitable for cold-pad-batch (CPB) and other continuous processes.
- Textile Printing: Provides a stable red for direct printing on cellulosic fabrics.
Key Benefits
- Highly economical with good colour yield.
- Versatile application profile (hot and cold).
- High fixation rate for efficient dyeing.
- Neutral to yellowish-red shade.
Technical Highlights
- Reactive System: Vinyl Sulfone (VS)
- Tone: Yellowish
- Appearance: Red Powder
Packaging & Availability
- Supplied in a standardized powder form.
- Standard Packing: 25 kg carton box.
- Customized packaging is available upon request.
