Explore our premium grade selections of industry-verified dyestuffs engineered for maximum color fastness, brilliance, and application versatility.
Tianjin Sunrise Chem Group specializes in manufacturing and exporting high-purity, premium-grade dyestuffs. Our extensive portfolio encompasses Direct dyes, Acid dyes, Basic dyes, Sulphur dyes, Solvent dyes, Liquid dyes, and Fluorescent dyes. Backed by decades of advanced chemical engineering and international trade experience, we have structured a reliable global pipeline catering to sectors including denim, textiles, leather processing, papermaking, and polymer manufacturing.
We believe chemical reliability is founded on verification. Consequently, every single shipment undergoes rigorous HPLC and spectrophotometric testing prior to port dispatch. Holding ZDHC Level 3 and GOTS certifications, we guarantee that our materials align with the most strict environmental limits globally, safeguarding your brand's integrity and supply chains.
Exploring the chemical properties, molecular alignment, and structural stability that deliver superior saturation and fastness properties on protein fibers and polyamides.
Acid Scarlet 3R (commonly cataloged under Color Index as C.I. Acid Red 18 / Ponceau 4R) is an anionic monoazo dye. Structurally composed of a naphthalene core with multiple sulfonate groups, its synthesis relies on the precise diazotization of 4-amino-1-naphthalenesulfonic acid coupled with 7-hydroxy-1,3-naphthalenedisulfonic acid. The resulting water-soluble crystal powder delivers vibrant red shades via ionic bonding with cationic terminal groups of protein fibers.
The presence of three sulfonate groups ($SO_3Na$) guarantees excellent solubility in aqueous dyebaths. However, it requires careful electrolyte and temperature management during the heating phase to coordinate molecular migration. Our specialized manufacturing lines optimize crystal sizes and minimize isomer variations to guarantee uniform build-up, reducing risks of batch-to-batch color deviations (Delta E < 0.5).
Designed primarily for dyeing wool, silk, and polyamide (nylon) fibers, Acid Scarlet 3R exhibits excellent leveling properties. The dye is typically applied in weakly acidic dyebaths (pH 4.5–5.5). When applied to leather hides, it shows exceptional penetration depth and high fastness against wet-rubbing. Furthermore, its biological compatibility profile satisfies strict limits for industrial paper pulp staining processes.
In modern chemical manufacturing, predictability is everything. Tianjin Sunrise Chem Group operates on advanced automation systems integrated into our synthesis and drying chambers. Through Distributed Control Systems (DCS), we monitor temperatures, pH levels, and reaction times in real-time, eliminating variations in purity and concentration.
By automating raw material feeding and utilizing modern spray dryers, we produce Acid Scarlet 3R with consistent bulk density and low-dust profiles. Furthermore, our close proximity to Tianjin Port, one of Northern China’s premier logistics hubs, ensures highly responsive logistics, container loading, and ocean freight routing. We prevent disruptions through active raw material indexing and dual-source key intermediate protocols.
Cooperating with leading textile, leather, and paper mills for decades highlights the strength and reliability of our business relationships. This long-term collaboration brings numerous mutual benefits, including consistent order pipelines, optimized shared research assets, and prompt technical support. It also indicates that the factory has a proven track record of delivering quality products and meeting the challenging demands of its partners.
Our mission is to drive your business growth by providing reliable, high-performance, and customized chemical colorants. We aim to contribute significantly to your manufacturing success by delivering first-class products alongside responsive customer service. By building lasting partnerships, we strive to be a catalyst for your business's success.
We provide comprehensive technical integrations that go beyond supplying raw chemical powders, ensuring color stability throughout your entire production workflow.
We provide spectrophotometric data profiles (L*, a*, b* values) for our Acid Scarlet 3R, allowing seamless integration into computerized color-matching software. This simplifies the adjustment of dye formulas for complex fiber blends.
Our products are available in customizable packaging formats, including 25kg iron drums, carton boxes, woven bags, and custom water-soluble bags. These options allow direct charging into automated dye kitchens, reducing dust exposure and material waste.
By optimizing dye affinity and fixing rates, our formulations reduce chemical oxygen demand (COD) loads in dye effluents, lowering the operational costs of industrial wastewater treatment.
Environmental protection is the core of our technical innovation. We dedicate ourselves to providing global clients with eco-friendly, high-performance colorants that balance production efficiency with environmental harmony. Our goal is to drive the chemical industry toward a sustainable development path—supporting a greener textile industry and a sustainable future.
We actively conform to international standards such as REACH, ZDHC Level 3, and GOTS. These certifications verify that our products are free from restricted arylamines, heavy metals, and persistent bioaccumulative toxins. We support our customers with comprehensive documentation, including detailed Safety Data Sheets (SDS), technical data sheets (TDS), and certification verifications, ensuring smooth customs clearance and compliance audits.
How we address supply chain risks, shipping lead times, and customization requests for international bulk buyers.
For international supply chain managers, importing dyestuffs requires a focus on quality consistency, cost efficiency, and supply chain security. Tianjin Sunrise Chem Group coordinates shipping routes to manage delivery times, using moisture-proof container linings to protect product quality during ocean transport.
We offer flexible contract pricing for annual volume agreements, helping buyers manage market volatility. In addition, our technical team provides support for custom strength adjustments, custom physical blends, and specialized powder-to-liquid conversions.
A look at our warehouse facilities, material handling systems, and shipping procedures.
A selection of our dyes and pigments engineered for specific leather, silk, and wool coloring processes.
Decisions backed by transparency: Tianjin Sunrise Technical Testing and Research Center
Adapting dye chemistry to meet the demands of tomorrow's low-carbon manufacturing ecosystems.
Conventional acid dye powders often contain high concentrations of inorganic salts, such as sodium sulfate or sodium chloride, which can complicate effluent treatment. Our current R&D efforts focus on optimizing membrane filtration and desalting techniques. This work aims to supply ultra-pure, low-salt formulations of Acid Scarlet 3R, reducing the environmental impact of dyehouse wastewater.
To support automated, dust-free dye kitchens, we are expanding our production of high-stability liquid dye concentrates. The liquid versions of our acid dyes are formulated to prevent sedimentation and maintain stability across temperature fluctuations, enabling automated dosing for large-scale operations.
In line with the ZDHC program's goals, we are refining our synthesis process to avoid heavy-metal catalysts and minimize trace residues of restricted organic compounds. This helps ensure that our products meet the strict chemical limits of global fashion brands and regulatory bodies.
We prioritize long-term cooperation with our customers by providing reliable services that support their operational goals. Our factories feature modern equipment and an experienced technical workforce, allowing us to manage large-scale and demanding orders. Choosing Tianjin Sunrise means partnering with a supplier committed to product availability, quality consistency, and environmental compliance.
Every batch of our dyes is tested for color fastness, solubility, and other critical metrics. We aim to supply vibrant, stable colorants that help our clients succeed in competitive international markets.
Technical answers to common questions about properties, environmental compliance, packaging, and logistics.
Compare alternative chemical families for specialized industrial coloring requirements.
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