Concentration: 133%
Reactive Black B (Reactive Black 5) is the world's most widely used reactive dye for cotton and cellulosic fibers. It creates a deep, intense black shade with excellent fastness properties. Ruvon supplies the high-concentration 133% Strength grade, ensuring superior color yield and cost-effectiveness in dyeing processes.
Reactive Black B contains two Vinyl Sulfone groups, making it a "bi-functional" dye. This unique structure allows it to bond chemically with cellulose fibers, resulting in vibrant colors that do not fade easily during washing.
Guaranteed 133% strength for superior depth of shade.
| Parameter | Specification |
|---|---|
| Appearance | Dark Black Free-Flowing Powder |
| Strength (vs Standard) | 133% ± 2% |
| Solubility (at 60°C) | 120 g/l |
| pH (1% Solution) | 6.0 – 7.0 |
| Light Fastness (Scale 1-8) | 5 - 6 (Excellent) |
| Washing Fastness (Scale 1-5) | 4 - 5 (Excellent) |
| Perspiration Fastness | 4 - 5 |
| Rubbing Fastness (Wet/Dry) | 3-4 / 4-5 |
Reactive dyes are unique because they don't just "sit" on the fiber; they become part of it. The Vinyl Sulfone group reacts with the hydroxyl (-OH) group of cellulose in the presence of alkali (Soda Ash).
Used extensively for dyeing t-shirts, hosiery, and innerwear in Jet Dyeing machines.
Ideal for Jigger and Pad-Batch dyeing of cotton shirting and bottom weights.
Provides brilliant shades on regenerated cellulose fibers.
Used in printing pastes for reactive printing on cotton fabrics.
Package dyeing of cotton yarn for weaving and knitting.
Used for over-dyeing denim to achieve "Deep Black" or "Carbon Black" shades.
With double plastic liners to prevent moisture absorption.
Robust packing for export and rough handling.
Reactive dyes are generally fine powders.
Premium 133% Strength. Consistent shade and superior fastness.
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Ruvon International Pvt. Ltd.
Global chemical sourcing and supply.
A/6, Parimal Soc-2, Behind Sardar Estate, Ajwa Road, Vadodara, India - 390019
+91 97730 71752
+91 77780 56001
info@ruvonchemicals.in