Explore our high-performance industrial dyes engineered to exceed demanding applications in international markets.
Bismarck Brown, also recognized as Basic Brown 1 (Bismarck Brown Y) and Basic Brown 4 (Bismarck Brown R), stands as one of the earliest synthetic diazo dyes ever created. It possesses an azo compound base synthesized through the coupling reaction of meta-phenylenediamine. Characterized by its deep, rich brown shade, Bismarck Brown continues to occupy a pivotal role within global chemical formulations, functioning as a primary colorant across numerous manufacturing disciplines.
Unlike many standard basic colorants, Bismarck Brown has a strong affinity for tannin-mordanted cotton fibers, wool, silk, and particularly cellular and cellulosic substrates. Its chemical profile makes it highly resistant to mild heat treatments, providing long-lasting binding when combined with proper organic agents. In the realm of histological pathology, it serves as a critical staining agent (often utilized in Pap smears and cell biology to stain mucin and cartilage).
As leading manufacturers, Tianjin Sunrise Chem Group utilizes advanced batch-synthesized protocols to balance color intensity, consistency, and structural purity. By employing automated crystallization systems, we maintain minimal batch-to-batch variation, delivering stable dyes to help enterprises meet their chemical safety and color performance standards.
Purity Level Consistency
ZDHC Environmental Safety
Organic Textile Standard Approved
Batch Traceability Index
China's chemical manufacturing sector has evolved from a basic processing model into a high-technology, integrated supply chain powerhouse. Selecting a Chinese manufacturer like Tianjin Sunrise Chem Group guarantees significant advantages across several critical areas:
Our facility in China enjoys direct access to key petrochemical precursors, including meta-phenylenediamine and derivatives. By securing localized supply chains, we avoid international raw material price volatility, offering stable pricing to our global partners.
In alignment with national ecological regulations, our factory operates modern wastewater treatment systems. We recycle over 85% of chemical washing waters, reducing discharge profiles and complying with strict environmental laws.
Our close proximity to major logistics hubs allows us to offer efficient international shipping routes. We supply Bismarck Brown in both standard dry powder and specialized liquid formulations, tailored to meet specific factory setup needs.
The chemical matrix below outlines key physical-chemical attributes of Bismarck Brown (Basic Brown 1 vs. Basic Brown 4) manufactured at our factory:
| Property Parameter | Bismarck Brown Y (Basic Brown 1) | Bismarck Brown R (Basic Brown 4) | SUNRISE Quality Standards |
|---|---|---|---|
| Chemical Formula | C18H18Cl2N8 | C21H24N8 • 2HCl | Optimized Molecular Distribution |
| CAS Number | 10114-58-6 | 5421-66-9 | Fully Verified & Registered |
| Solubility in H2O | Moderate (Approx. 10g/L at 20°C) | High (Approx. 25g/L at 20°C) | Fine Dispersion & Low Residue |
| Color Index Number | C.I. 21000 | C.I. 21010 | Verified via Spectrophotometry |
| Primary Target Application | Biological Staining, Leather, Paper | Textiles, Industrial Coatings, Acrylics | High Fastness Performance |
Bismarck Brown is utilized across diverse manufacturing environments. At Sunrise Chem Group, we support our clients with customized application methodologies:
Bismarck Brown is widely used in kraft and unbleached pulps to produce stable packaging materials, kraft paper, and cardboard containers. It delivers reliable coloring without the need for high-cost chemical mordants.
Within tanning processes, Basic Brown dyes penetrate animal fibers to cover structural imperfections. They provide a rich base color that prepares leathers for subsequent top coatings.
Our ultra-pure Bismarck Brown Y is widely used in laboratories as a cell staining agent. It highlights cartilage structures and goblet cell mucins, supporting accurate diagnostic assessments.
Beyond simple dye delivery, Tianjin Sunrise Chem Group offers complete systemic solutions. Our technicians support client production lines by adjusting pH parameters, water hardness, and temperature limits. This collaborative approach helps minimize chemical waste and maximize color performance.
The colorant industry is experiencing an ecological transformation. Global supply chains now demand strict compliance with international chemical safety standards. Green chemistry guides our development, helping us balance manufacturing output with environmental responsibility.
By implementing cleaner manufacturing technologies, we have reduced heavy metal contaminants and free aromatic amine concentrations in our dyestuffs. This focus on chemical safety helps our clients satisfy global trade regulations, including REACH in Europe and TSCA in the United States.
Our active participation in the Zero Discharge of Hazardous Chemicals (ZDHC) program and our GOTS (Global Organic Textile Standard) certifications demonstrate our ongoing commitment to ecological safety. We aim to help our clients minimize their environmental footprint while maintaining high color performance.
Verifies that our dye formulations meet strict safety standards, reducing environmental discharge during manufacturing.
Ensures the organic status of textile dyes from raw materials through socially and environmentally responsible processing.
An overview of our production facilities, warehouse systems, and global logistics operations:
High-capacity reactors ensuring stable production volume.
Advanced chromatography systems for purity analysis.
Secure, moisture-resistant industrial packaging lines.
Quick shipping and custom tracking support.
Verified credentials from international testing bodies:
Answers to key technical and operational questions regarding our dyes:
Explore the second part of our certified catalog, engineered for diverse global application scenarios.
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