Reactive Blue 19 dyes are widely used in textile dyeing for cotton and cellulosic fibers. These dyes are known for their bright blue shades, excellent wash fastness, and strong fiber bonding, making them ideal for industrial textile processing.
They form a covalent bond with fibers, ensuring long-lasting color and resistance to washing, light, and chemicals. Reactive Blue dyes are suitable for exhaust, cold pad-batch, and continuous dyeing processes.
We are Reactive Blue 19 dye manufacturers from India with consistent quality for global markets including USA, Europe, and the Middle East.
General Specification
| Parameter | Specification | Result |
|---|---|---|
| Appearance / Shade | Blue powder | Blue powder |
| Dye Content / Strength | 100% standard | 100% |
| Maximum Absorption (λ max) | ~592 nm | 592 nm |
| Solubility in Water | ≥ 100 g/L (20°C) | Pass |
| pH (1% Solution) | 6.0 – 8.0 | 6.8 |
| Moisture Content | ≤ 5.0% | 2.5% |
| Insoluble Matter | ≤ 0.5% | 0.2% |
| Light Fastness | 5 – 6 | 5 |
| Washing Fastness | 4 – 5 | 4–5 |
| Rubbing Fastness (Wet / Dry) | Wet: 2–3 / Dry: 4 | Conforms |
Notes: * For more detailed specification and technical data please Contact Us.
Technical Specification
- Product Name : C.I. Reactive Blue 19
- C.I. Name: Reactive Blue 19
- C.I. Number: 61200
- CAS Number : 2580-78-1
- Chemical Class : Anthraquinone (Vinyl Sulfone Reactive Dye)
- Molecular Formula : C22H16N2Na2O11S3
- Molecular Weight : 626.54 g/mol
Available Grades
- Reactive Blue 19 (RB19) – Bright blue shade, excellent light fastness (most popular)
- Reactive Blue 21 (RB21) – Strong color yield, good leveling
- Reactive Blue 49 (RB49) – Deep blue tone, good fixation
- Reactive Blue 4 (RB4) – Cost-effective grade for general applications
- Reactive Blue HE / ME Series – High exhaustion and customized grades
Applications
- Cotton & viscose dyeing
- Garment processing
- Textile printing
- Denim industry
Packaging Details
- 25 KG HDPE Drums / Bags with inner liner
- Customized packaging available
Storage Conditions
- Store in tightly closed containers
- Keep in a cool, dry, ventilated area
- Protect from moisture and sunlight
Handling Conditions
- Avoid inhalation of dust
- Avoid contact with skin and eyes
- Use proper PPE
Why Choose Us
- Reactive Blue 19 Dye Manufacturers from India
- Bulk Export Capability
- Consistent Quality Batch to Batch
- COA / TDS / MSDS Available
- Competitive Pricing
FAQs
Which Reactive Blue dye is best for bright shades?
Reactive Blue 19 (RB19) is the most widely used for bright and vibrant blue shades with excellent light fastness.
Which grade is suitable for uniform dyeing?
Reactive Blue 21 (RB21) offers good leveling properties, making it ideal for uniform dyeing.
Which Reactive Blue is best for deep shades?
Reactive Blue 49 (RB49) provides deeper blue tones suitable for rich fabric colors.
Which grade is cost-effective for general use?
Reactive Blue 4 (RB4) is commonly used where cost efficiency is important.
Are customized Reactive Blue grades available?
Yes, HE and ME series dyes are available with high exhaustion and tailored performance.
What are the different Reactive Blue grades and their uses?
Reactive Blue dyes such as RB19, RB21, RB49, and RB4 are used in textile dyeing and printing, offering benefits like bright shades, high fixation, and uniform dyeing performance.
