Sudan Blue II, widely classified within the Color Index system as Solvent Blue 35 (CAS No. 17354-14-2), is a premium synthetic anthraquinone dye recognized for its outstanding performance in extreme processing environments. Characterized by its deep, brilliant blue hues, the chemical possesses a molecular structure containing amine chains which render it highly soluble in non-polar organic media, including monomers, resins, polymers, and mineral oils.
Unlike lower-grade alternative colorants, our Sudan Blue II features a molecular composition designed to prevent migration and sublimation under high temperatures. This renders it an ideal solution for masterbatch production, plastic extrusion, and complex coating formulations where thermal stability up to 280°C - 300°C is required. As a leading manufacturer, we strictly manage impurity profiles to ensure that our solvent dyes comply with safety and performance parameters required for international regulatory standards.
Tianjin Sunrise Chem Group specializes in manufacturing high-quality dyestuffs. Our extensive catalog includes Direct dyes, Acid dyes, Basic dyes, Sulphur dyes, Solvent dyes, Liquid dyes, and Fluorescent dyes. Backed by decades of industry and export experience, we have built a reputation for reliability and excellence, serving clients from diverse sectors including denim, textile, leather, paper, and plastic.
We highly focus on goods quality and stability. Every batch is meticulously verified prior to dispatch. Our alignment with ZDHC Level 3 (Zero Discharge of Hazardous Chemicals) and the Global Organic Textile Standard (GOTS) certifies that your quality is guaranteed, paving the way for clean, compliant manufacturing processes globally.
We pride ourselves on offering customized solutions. Our team of experts works closely with clients to understand their unique technical requirements and deliver tailored products. We actively seek strategic partnerships with global distributors, mills, and masterbatch plants to expand our reach and build long-term value.
Cooperating with textile and paper mills for many years shows that the factory has established a strong and reliable business relationship. This kind of long-term collaboration brings numerous benefits, such as consistent orders, shared resources, and mutual support. It also indicates that the factory has a good track record of delivering quality products and meeting the needs of its partners.
Environmental protection is the cornerstone of our innovation. We dedicate ourselves to providing clients with eco-friendly, high-quality colorants that balance productivity with environmental harmony, driving the industry towards a more sustainable development path while delivering high-performance products—for a greener textile industry and a sustainable future.
In the current global industrial colorant market, Sudan Blue II (Solvent Blue 35) is rapidly experiencing an increase in demand. Driving this trend is the demand for specialized plastic products across automotive, industrial electronics, consumer packaging, and oil marker applications.
Plastics such as Polystyrene (PS), Styrene-acrylonitrile (SAN), ABS, Polycarbonate (PC), and Polymethyl Methacrylate (PMMA) require dyes that dissolve into the polymer matrix. Sudan Blue II provides transparency, vivid coloration, and high resistance to thermal degradation, meaning it preserves mechanical properties during molding.
Lubricant oils, diesel fuels, and industrial hydraulic fluids are color-coded with Sudan Blue II to identify grades, trace pipeline distributions, and mitigate fuel fraud. Its stability in complex hydrocarbons keeps the color intense over prolonged storage cycles.
From high-end marine coatings to gravure and flexographic packaging inks, Solvent Blue 35 acts as a reliable coloring agent. Its low solvent retention and compatibility with multiple resins make it a preferred raw material for chemical formulators.
In the specialty chemical sector, production efficiency is tied to raw material integration, process automation, and strict environmental compliance. Tianjin Sunrise Chem Group leverages its proximity to the port of Tianjin and established partnerships to offer chemical solutions on a global scale.
Our synthesis facilities employ advanced computerized control systems that regulate reaction parameters—such as condensation temperatures and filtration speeds. This reduces batch-to-batch variance, which is a key requirement for precision industries like masterbatch coloring. Furthermore, by adopting closed-loop VOC systems, we reduce emissions and ensure compliance with strict environmental regulations. This prevents supply interruptions caused by environmental audits, giving our international clients a reliable supply chain.
In European and American markets, safety compliance regulations (REACH, TSCA) are strict. Our Sudan Blue II is designed to comply with these restrictions, making it suitable for colouring polymers intended for consumer appliances, tool housings, and packaging.
Large petrochemical and distribution networks in the Middle East and Asia use Solvent Blue 35 as an indicator dye. It mixes with diesel, gasoline, and lubricants, providing consistent marking that remains stable in high-temperature transport conditions.
With the growth of the packaging and printing sectors in Asia, manufacturers require dyes that are highly soluble in polar solvents. Sudan Blue II dissolves quickly in alcohol-ether systems, producing inks that dry quickly and resist water wash-offs.
With years of experience, we have established strong partnerships in many countries. Our dedication to meeting global demands and exceeding customer expectations has earned us a reputation as a reliable supplier worldwide.
The ZDHC program is a collaborative effort by leading brands, retailers, and suppliers in the textile and footwear industry to reduce the use of hazardous chemicals. The focus of this certification is on eliminating the release of hazardous chemicals into the environment throughout the entire supply chain. Achieving ZDHC certification indicates that our company has implemented robust chemical management procedures and has met the stringent requirements for chemical handling, wastewater treatment, and pollution prevention.
The Global Organic Textile Standard (GOTS) is a certification that ensures the organic status of textiles from the harvesting of raw materials to environmentally and socially responsible manufacturing. The GOTS certification guarantees that the textiles are made from organic fibers, that chemical inputs are minimized, and that strict environmental and labor standards are met throughout the production process. GOTS certified products are considered to be sustainable, safe, and ethical.
Both certifications are important in the context of sustainable and responsible textile production. ZDHC focuses on the elimination of hazardous chemicals, while GOTS certification guarantees the organic and ethical aspects of the textile production. By partnering with us, you choose a relationship built on reliability, transparency, and mutual success.
Sudan Blue II is structured on a robust anthraquinone core, enabling high thermal stability. In engineering polymers like Polystyrene (PS) and PMMA, it resists decomposition and thermal migration at temperatures up to 280°C - 300°C. This makes it suitable for processes with short extrusion cycle times.
Yes. Due to its dialkylamino side groups, Solvent Blue 35 displays high solubility in non-polar media, hydrocarbons, aromatic solvents, and monomeric plastics. It dissolves completely without leaving particulate residues that could cause manufacturing defects in spinning or film extrusion.
ZDHC Level 3 is the highest compliance tier. It certifies that the chemistry used in our manufacturing process complies with the ZDHC MRSL (Manufacturing Restricted Substances List). Choosing certified products protects your brand from regulatory issues and ensures your textiles and plastics meet modern environmental standards.
Our standard industrial packaging includes 25kg fiber drums, custom iron drums, or multi-wall cardboard cartons. We also offer customization for bulk containers. Leveraging our logistics network near Tianjin Port, we dispatch products within 7-15 days, optimizing supply chains for partners in North America, Europe, and Asia.
Yes, customization is a core service. We adjust shade parameters, solubility profiles, and physical forms (e.g., granular, dust-free powder, or liquid dispersions) in our laboratories to meet your specific equipment and application requirements.
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