Reactive Blue
Reactive Blue is a high-performance dye solution designed for industrial and textile applications. With advanced formulation and superior colorfastness, Reactive Blue delivers vibrant, long-lasting coloration for various materials.
Key Features of Reactive Blue
- High color yield for maximum efficiency
- Excellent wash and light fastness properties
- Low environmental impact formulation
- Compatible with multiple fiber types
- Consistent batch-to-batch quality
Technical Specifications
| Parameter | Specification |
|---|---|
| Chemical Type | Reactive Dye |
| Color Index | Reactive Blue 19 |
| Appearance | Dark blue powder |
| Solubility | 50g/L at 25°C |
| pH Value | 6.5-7.5 (1% solution) |
| Storage Temperature | 5-30°C in dry conditions |
Application Guidelines
For optimal results with Reactive Blue, follow these recommended application parameters:
| Process | Condition | Value |
|---|---|---|
| Dyeing Temperature | Cotton | 60-80°C |
| Dyeing Time | Standard | 30-60 minutes |
| pH Range | Optimal | 10.5-11.5 |
| Salt Concentration | Standard | 50-80 g/L |
Reactive Blue FAQ
Q: What fabrics is Reactive Blue suitable for?
A: Reactive Blue is primarily designed for cellulosic fibers like cotton, linen, and viscose. It can also be used on protein fibers like wool and silk with modified application methods. The dye forms covalent bonds with the fiber molecules, ensuring excellent wash fastness.
Q: How does Reactive Blue compare to other blue dyes in terms of environmental impact?
A: Reactive Blue has been formulated with reduced heavy metal content and lower toxicity compared to conventional blue dyes. It meets international environmental standards including OEKO-TEX® and REACH compliance. The dye shows 85-90% fixation rate, minimizing waste in effluent.
Q: What is the shelf life of Reactive Blue under proper storage conditions?
A: When stored in its original sealed packaging at recommended temperatures (5-30°C) with humidity below 65%, Reactive Blue maintains optimal performance for 24 months from production date. Always check batch codes for precise expiration information.
Performance Data
Laboratory tests demonstrate Reactive Blue's superior performance characteristics:
| Test Method | Standard | Result |
|---|---|---|
| Wash Fastness | ISO 105-C06 | 4-5 (1-5 scale) |
| Light Fastness | ISO 105-B02 | 6-7 (1-8 scale) |
| Rubbing Fastness | ISO 105-X12 | 4 (dry), 3-4 (wet) |
| Perspiration Fastness | ISO 105-E04 | 4 (acid), 4 (alkali) |
Safety Information
- Wear appropriate protective equipment during handling
- Avoid inhalation of dust particles
- Store away from food and beverages
- In case of eye contact, rinse immediately with plenty of water
- Dispose of according to local environmental regulations
Reactive Blue FAQ
Q: Can Reactive Blue be used for continuous dyeing processes?
A: Yes, Reactive Blue is suitable for continuous dyeing applications. For continuous processes, we recommend using our specialized Reactive Blue C formulation which has optimized solubility and migration properties for padding applications. Typical padding liquor concentrations range from 20-60 g/L depending on desired shade depth.
Q: What is the recommended fixation method for Reactive Blue?
A: Reactive Blue achieves optimal fixation through either cold batch (24-48 hours at room temperature) or hot fixation (steaming at 102-105°C for 5-8 minutes). The choice depends on your production requirements. Cold batch provides best penetration for heavyweight fabrics while steaming offers faster processing times.
Q: Does Reactive Blue require special washing-off procedures?
A: Proper washing-off is crucial for Reactive Blue to achieve full fastness properties. We recommend a three-stage washing process: 1) Cold rinse to remove unfixed dye, 2) Hot wash (80-85°C) with detergent, and 3) Soaping at boil with 1-2 g/L detergent for 15-20 minutes. This ensures complete removal of hydrolyzed dye.
Ordering Information
| Package Size | Product Code | Minimum Order |
|---|---|---|
| 1 kg | RB-1K | 5 units |
| 5 kg | RB-5K | 3 units |
| 25 kg | RB-25K | 1 unit |
Reactive Blue FAQ
Q: Can Reactive Blue be mixed with other reactive dyes?
A: Reactive Blue is compatible with most reactive dyes of similar chemistry. For trichromatic mixing, we recommend pairing with our matched Reactive Yellow and Reactive Red formulations. Always conduct small-scale tests when creating new color combinations as different dye reactivities may affect final shade development.
Q: What water quality is required for best results with Reactive Blue?
A: Use soft water (hardness below 50 ppm) for optimal Reactive Blue performance. Hard water can reduce dye solubility and affect color yield. If only hard water is available, add 0.5-1 g/L EDTA or other suitable sequestering agent. Water pH should be neutral (6.5-7.5) before adding alkali for fixation.
Q: How does Reactive Blue perform in low-liquor ratio dyeing systems?
A: Reactive Blue performs exceptionally well in low-liquor ratio applications (1:3 to 1:5). In such systems, we recommend increasing salt concentration by 10-15% compared to conventional dyeing to maintain proper exhaustion. The high solubility of Reactive Blue prevents precipitation issues common with other dyes in low-liquor conditions.
For technical support or custom formulations using Reactive Blue, please contact our technical service department with your specific requirements. Our team can provide tailored recommendations for your application processes and equipment.