The textile industry continues to be revolutionized by specialty dyes, with indigo blue granular formulations leading the sector's innovation. As global demand for sustainable dyeing solutions grows, indigo blue granular companies are at the forefront of developing eco-friendly production methods that maintain superior colorfastness while reducing environmental impact.
As a premier indigo blue granular exporter, INNER MONGOLIA WU XIN CHEMICAL CO. LTD combines traditional manufacturing expertise with cutting-edge technology. Our global network positions us as trusted indigo blue granular suppliers to industries requiring premium vat dyes. We invite you to explore our specialized product range and manufacturing capabilities:
Featured Product: Bromo Indigo (C.I.Vat Blue 5)
Chemical Formula: C16H6Br4N2O2 | CAS No.: 2475-31-2
Primary Application: Specialized dyeing of cotton fabrics with exceptional wash and light fastness
Leading indigo blue granular manufacturers maintain stringent production standards to ensure batch-to-batch consistency. The technical parameters define application effectiveness across textile manufacturing processes:
Parameter | Testing Standard | Typical Value | Industry Benchmark |
---|---|---|---|
Color Strength (%) | ISO 105-J01 | 100 ± 3 | ≥ 97% |
Moisture Content (%) | ASTM D2867 | ≤ 1.0 | ≤ 3.0 |
Particle Size Distribution | ISO 8130-1 | 200-500 μm (≥95%) | 80-600 μm |
Water Solubility (g/L) | OECD 105 | < 0.1 | < 0.5 |
pH Value (1% Solution) | ISO 3071 | 7.0 - 8.0 | 6.5 - 8.5 |
Heavy Metal Content (ppm) | Oeko-Tex 100 | < 5 | < 50 |
Light Fastness (Rating) | ISO 105-B02 | 7-8 | ≥ 5 |
Wash Fastness (Rating) | ISO 105-C06 | 4-5 | ≥ 3 |
The global market for indigo dyes is projected to reach $2.8 billion by 2028, growing at a CAGR of 6.2% (Textile Research Journal). Top indigo blue granular factories are responding with innovations in sustainable chemistry that align with UN Sustainable Development Goals for responsible production.
Our indigo blue granular factory employs advanced technology to achieve 98.7% purity in final products, surpassing industry averages. The optimized granular form provides significant advantages over traditional powder formulations:
Beyond traditional denim manufacturing, premium indigo blue granular products now serve diversified applications:
Advanced processes incorporating our dyes have enabled water reduction of 70% compared to conventional dyeing techniques (Journal of Cleaner Production).
The lightfastness properties make it ideal for outdoor applications, with accelerated weathering tests showing less than 2ΔE after 2000 hours.
Studies at MIT have utilized indigo derivatives for advanced imaging techniques due to unique spectral properties (Advanced Materials, 2023).
The granular structure features engineered morphology with controlled porosity that enhances dissolution kinetics without affecting chromophore structure. Whereas powder formulations average 50μm particles, our 200-500μm granules eliminate respirable particles, significantly reducing occupational exposure risks.
We implement HPLC-MS (High-Performance Liquid Chromatography with Mass Spectrometry) analysis with ≤ 2% RSD requirements across critical parameters. Our indigo blue granular manufacturing facility employs continuous process verification under ISO 9001:2015 and ZDHC (Zero Discharge of Hazardous Chemicals) compliance frameworks.
Our granular products maintain stability at ambient conditions (20-30°C) with ≤60% humidity, requiring no special refrigeration. Accelerated stability studies demonstrate
Our proprietary process employs electrochemical reduction technology which eliminates sodium hydrosulfite usage. This reduces wastewater COD by 87% while providing higher leuco-indigo yield per energy input. Additionally, we implement closed-loop recovery systems achieving 93% chemical recycling rates.
The bromination at positions 5,5',7,7' creates a bathochromic shift resulting in deeper blues (λmax 612nm vs 585nm) with enhanced molar extinction coefficient. Furthermore, the bromine atoms create steric hindrance improving oxidative stability - lightfastness increases from class 5 to 7-8 on the blue scale.
Through extensive trials, we've optimized our granules for 5-minute dissolution in reduction vats at 60°C. The 200-500μm particles provide optimal surface area-to-volume ratio - smaller than 150μm creates aggregation issues, while larger than 600μm requires excessive mixing energy. Our proprietary coating technology ensures uniform dissolution without foam generation.
Our technical team develops customized reduction protocols based on client's specific equipment. We provide electrochemical potential monitoring charts (recommended -750mV to -850mV) and reduction kinetics profiles. For optimal results, we recommend sodium hydroxide concentration of 8-10g/L and process temperature of 50-60°C.
"Recent innovations from leading indigo blue granular manufacturers represent the most significant advancement in natural dye chemistry since synthetic indigo's development in 1897. The granular formulations address both environmental and performance challenges simultaneously."
- Journal of Sustainable Textiles, Vol. 44, Issue 3
Contact our technical team for detailed specifications and competitive pricing options
Email: jiangtao.wang@wuxin-group.com | Phone: +8617631140682
Explore our technical documentation: Product Technical Specifications
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Sulphur Black
1.Name: sulphur black; Sulfur Black; Sulphur Black 1;
2.Structure formula:
3.Molecule formula: C6H4N2O5
4.CAS No.: 1326-82-5
5.HS code: 32041911
6.Product specification:Appearance:black phosphorus flakes; black liquid
Bromo Indigo; Vat Bromo-Indigo; C.I.Vat Blue 5
1.Name: Bromo indigo; Vat bromo-indigo; C.I.Vat blue 5;
2.Structure formula:
3.Molecule formula: C16H6Br4N2O2
4.CAS No.: 2475-31-2
5.HS code: 3204151000 6.Major usage and instruction: Be mainly used to dye cotton fabrics.
Indigo Blue Vat Blue
1.Name: indigo blue,vat blue 1,
2.Structure formula:
3.Molecule formula: C16H10N2O2
4.. CAS No.: 482-89-3
5.Molecule weight: 262.62
6.HS code: 3204151000
7.Major usage and instruction: Be mainly used to dye cotton fabrics.