VS Series
Vinyl sulphoneSulphoethyl sulphone based reactive dyes whose vinyl sulphone group forms a covalent bond with the hydroxyl group of cellulose. The general-purpose workhorse of the COTFIX range — it runs on exhaust, cold pad batch, continuous and printing, and carries the widest blacks and navy selection.
Shades and fastness data
10 shades, with solubility, rubbing, light and washing fastness measured on standard grey scales.
| Dye | Shade 2% | Solubility gpl 30°C | Rubbing Fastness (Dry) | Rubbing Fastness (Wet) | Light Fastness 1/1 S/D | Washing Fastness (Shade) | Washing Fastness (Cotton) | Dischargeability |
|---|---|---|---|---|---|---|---|---|
| Cotfix Golden Yellow R | 100 | 4 | 3-4 | 4 | 4-5 | 4 | D | |
| Cotfix Orange 2R | 80 | 4 | 3-4 | 4 | 4-5 | 4 | D | |
| Cotfix Orange 3R | 80 | 4 | 3-4 | 4 | 4 | 4 | D | |
| Cotfix Red 5B | 100 | 4 | 3-4 | 4 | 4 | 4 | D | |
| Cotfix Deep Red DB | 100 | 4 | 3-4 | 4-5 | 4-5 | 4 | D | |
| Cotfix Turquoise Blue G 266% | 80 | 4 | 3-4 | 4 | 3-4 | 3 | ND | |
| Cotfix Blue BB 133% | 100 | 4 | 3-4 | 4 | 4 | 3-4 | D | |
| Cotfix Brilliant Blue R SPL | 90 | 4 | 3-4 | 4-5 | 4-5 | 4 | ND | |
| Cotfix Black B 133% | 100 | 4 | 3-4 | 4 | 4-5 | 3-4 | D | |
| Cotfix Black B H/C | 100 | 4 | 3-4 | 4 | 4-5 | 3-4 | D |
D — Dischargeable · PD — Partially dischargeable · ND — Not dischargeable. Ratings on standard grey scales.
Characteristics
Sulphoethyl sulphone based reactive dyes with vinyl sulphone as the reactive group, forming covalent bonds with the hydroxyl group of cellulose.
- Better solubility & alkali stability
- Excellent fastness
- Exhaust · CPB · continuous · printing
- Warm dyeing process
- Wide blacks & navy range
- Large dischargeable selection
VS dyes mix with the ME bifunctional series for vibrant shades. Manufactured at Unit 1, Sayakha (Bharuch) and Unit 2, Vatva (Ahmedabad), with in-house laboratories at both sites. Every lot is tested before dispatch and every shade is traceable, which is what makes the figures above dependable rather than indicative.
How consistency is held, lot after lot
Fastness figures are only worth as much as the reproducibility behind them. Three controls sit behind every drum dispatched.
Every dye manufactured undergoes a rigorous three-point quality check system before delivery.
QC labs at the Ahmedabad head office, Ludhiana regional office, and both the Sayakha and Vatva factories.
A comprehensive database of all production lots ensures traceability and consistent delivery, lot after lot.
Made under Zero Liquid Discharge
Advanced wastewater treatment achieves Zero Liquid Discharge — no liquid waste is released into the environment. Mechanical Vapour Recompression and an Agitated Thin Film Dryer give 53 KLPD of water evaporation capacity, with a two-stage reverse osmosis plant recovering water ahead of evaporation.
That matters commercially as well as environmentally. Brands auditing their supply chain increasingly ask what happens to the effluent, and ZLD is the answer that closes the question before it becomes a purchasing obstacle.
Need a sample or a shade match?
Send the shade, substrate and process and we will dispatch a lab sample.
Request a sample ME Series — bifunctional