Certifications: ISO 9001:2015
Reactive Black 31
Category: Reactive Dyes
CI Number: 176090
Chemical Class: Azo Dye (Metal Complex) (Triazine)
Form: Powder
Lightfast Greenish-Black Dye
Reactive Black 31 is a metal-complex reactive dye that produces a unique, greenish-black shade. Its primary advantage is its very good lightfastness, a characteristic imparted by its pre-metallized structure. It is a specialty black used for dyeing cellulosic and protein fibres where resistance to fading is a critical requirement. It is a reliable choice for high-quality apparel and textiles that demand a specific, durable shade.
Applications- Exhaust Dyeing: Used for dyeing cotton, viscose, and wool where high lightfastness is needed.
- Textile Printing: Provides a unique, fast black for printing applications.
- Leather Dyeing: Can also be used to produce a greenish-black on leather.
Key Benefits
- Very good lightfastness for long-lasting colour.
- Unique, greenish-black shade.
- Good all-around fastness properties.
- Good dyeing reproducibility.
Technical Highlights
- Reactive System: Monochlorotriazine (MCT) / Cold Brand
- Tone: Greenish
- Appearance: Black Powder
Packaging & Availability
- Supplied in a standardized powder form.
- Standard Packing: 25 kg carton box.
- Customized packaging is available upon request.
