Solvent Red is an indispensable class of synthetic colorants designed for superior solubility in non-polar media. Unlike standard acid or direct dyes which contain water-solubilizing groups like sulfonic acid salts, Solvent Red dyes possess a non-ionic, lipophilic molecular structure. This makes them highly compatible with synthetic polymers, petroleum-based oils, industrial waxes, and hydrocarbon solvents.
When international sourcing departments search for "discount Solvent Red manufacturers & factories", the intent shifts from finding the cheapest, low-tier raw materials to optimizing the total cost of ownership (TCO) without sacrificing regulatory compliance. In the modern globalized market, sourcing from a manufacturer that balances scale with high purity is critical. Contaminated dye products with excessive insolubles can cause spinneret clogging in synthetic fiber extrusion, or polymer degradation during high-temperature injection molding.
By leveraging advanced synthesis technology and economies of scale, leading Chinese chemical factories can supply high-purity Solvent Red (such as Solvent Red 24, 135, and 195) at competitive price points. This integration of technological prowess and raw material cost control forms the foundation of modern chemical sourcing strategies.
Solvent Red colorants are heavily utilized in processing sectors where color purity and chemical integrity are paramount.
Solvent Red 135 and Solvent Red 195 are engineered to withstand processing temperatures exceeding 280°C–300°C. They dissolve directly into melted engineering plastics such as Polystyrene (PS), Polycarbonate (PC), Polymethyl Methacrylate (PMMA), and Polyethylene Terephthalate (PET), yielding crystal-clear transparency and brilliant coloration.
Various Azo-based Solvent Reds, such as Solvent Red 24 (Sudan IV), are commonly deployed to identify fluids, prevent counterfeiting, and mark fuels. Due to their non-polar organic structure, they dissolve completely in liquid hydrocarbons and mineral oils without precipitation or chemical degradation over long storage cycles.
Solvent-based printing inks, wood varnishes, and leather coatings require colorants that can be dispersed easily in alcohol, ketones, or esters. Solvent Red 49 (a highly soluble rhodamine base dye) is widely integrated into printing inks to achieve maximum brightness and reliable color depth.
Tianjin Sunrise Chem Group specializes in manufacturing and exporting high-quality dyestuffs. Our comprehensive colorant portfolio 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 solid reputation for reliability and excellence, serving clients from diverse manufacturing sectors including denim processing, textile manufacturing, leather tanning, paper mills, and industrial plastics.
We place quality and consistency at the forefront of our operations. Every batch undergoes rigorous quality control testing at our facilities before dispatch. Furthermore, our ZDHC Level 3 and GOTS certifications guarantee that the dyes you purchase conform to the most stringent international environmental laws.
We customize formulations to fit your technical specifications. Our expert technical team works alongside your engineers to understand your operational parameters and deliver targeted products and services. We are dedicated to forging strategic partnerships with manufacturers and raw material procurement agencies globally.
Environmental preservation is the core of our corporate innovation. We are committed to supplying eco-friendly, premium colorants that strike a clean balance between industrial productivity and ecological harmony. Our green manufacturing initiatives guide our clients toward sustainable supply chains—helping to achieve a cleaner textile industry and a greener future.
Sourcing from Chinese chemical manufacturing hubs provides overseas buyers with clear structural advantages. Tianjin Sunrise Chem Group offers unique benefits that optimize the procurement process:
| Dye Index | Chemical Class | Heat Stability (°C) | Light Fastness | Primary Industrial Applications |
|---|---|---|---|---|
| Solvent Red 24 | Azo | 180°C | 5 - 6 | Lubricants, Waxes, Inks, and Fuel Identification marking |
| Solvent Red 49 | Xanthene (Rhodamine Base) | 150°C | 4 - 5 | Flexographic inks, Ballpoint inks, and wood stains |
| Solvent Red 111 | Anthraquinone | 260°C | 7 - 8 | Polyester (PET) melt coloring, acrylics, and PS molding |
| Solvent Red 135 | Aminoketone / Heterocyclic | 300°C | 7 - 8 | Engineering Plastics (PC, PMMA, PS), Masterbatch manufacturing |
| Solvent Red 195 | Anthraquinone | 300°C | 7 - 8 | High-performance polymers, ABS, and polycarbonate sheets |
The global chemical supply chain is heavily regulated. The import of synthetic dyes requires verification that the products do not contain banned substances. For textile, plastic, and leather goods destined for international consumer markets, compliance with MRSL (Manufacturing Restricted Substances List) is mandatory.
ZDHC (Zero Discharge of Hazardous Chemicals) is a collaborative effort by major brands and retailers to eliminate harmful substances from textile and footwear supply chains. Achieving ZDHC Level 3—the highest level of certification—shows that our chemical formulations are third-party verified to comply with the MRSL. Buyers can rest assured that our dyes do not release toxic heavy metals or carcinogenic aromatic amines during manufacturing or product disposal.
The Global Organic Textile Standard (GOTS) is the leading textile processing standard for organic fibers. GOTS certification validates that environmental and social criteria are met along the entire supply chain. Our certified dyestuffs enable organic textile processors to dye cotton, wool, and silk fibers in full compliance with global organic labeling criteria.
We build long-term relationships with textile mills, paper mills, and plastic processing centers by offering transparent, reliable services. Below is a showcase of our shipping logistics, storage, and container loading capabilities:
Cooperating with textile and paper mills for decades highlights our stable chemical output and shipping capacity. This long-term collaboration secures consistent supply runs, shared technical resources, and responsive support. Our goal is to drive your business growth by delivering first-class dyestuffs and professional customer service.
In addition to Solvent Red, we manufacture and supply specialized dyes tailored for distinct industrial substrates. Below is an overview of our main categories:
Solvent Red dyes are non-ionic, lipophilic compounds, lacking highly polar groups such as sulfonic acid (-SO3H) or carboxylic acid (-COOH) groups. Instead, they feature organic structures like azo links, anthraquinone rings, or xanthene skeletons. This enables them to dissolve in non-polar organic solvents, liquid hydrocarbons, and polymers, whereas direct and acid red dyes contain sodium salts that render them water-soluble.
Polymers like Polycarbonate (PC), Polystyrene (PS), and PET require processing temperatures between 260°C and 300°C. If a solvent dye has low heat stability, it will degrade thermally, causing color shifting, loss of transparency, and the release of volatile byproducts. Solvent Red 135 and 195 feature advanced molecular structures that prevent decomposition at high heat, maintaining the optical clarity of the colored plastics.
ZDHC Level 3 is the highest MRSL compliance rating. It verifies that chemical formulations are systematically checked to exclude restricted hazardous substances. Sourcing ZDHC Level 3 products from Tianjin Sunrise protects your supply chain from environmental liabilities, import rejection, or brand recalls in strictly regulated markets like Europe and North America.
Bulk solvent dye powders should be stored in dry, cool, well-ventilated warehouses. They must be kept away from open flames, high temperatures, strong oxidizing agents, and direct sunlight. Ensuring tight packaging seals prevents moisture absorption and dust hazards, preserving the dye's color strength and dispersibility.
We offer targeted color-matching services for diverse materials, including plastics, textiles, and paper. Buyers provide substrate samples or Pantone reference codes, and our lab engineers optimize the dye blend to hit exact spectrophotometric values. This custom service guarantees batch-to-batch consistency and minimizes shade deviation.
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