Explore our high-performance organic colorants engineered for global textile, plastic, and paper manufacturing hubs.
In the domain of synthetic chemical colorants, Sulphur Red 14 stands as a benchmark of performance for cellulosic fibers. Mechanistically characterized as an organic polymeric structure containing complex sulfur linkage bonds, Sulphur Red 14 is structurally insoluble in its oxidized state. Achieving deep penetration within cotton, flax, and rayon fibers necessitates a sophisticated chemical reduction process. In industrial dyeing setups, reducing agents such as sodium sulfide, sodium hydrosulfite, or glucose are applied under alkaline conditions, temporarily converting the dyestuff into its highly soluble leuco form.
This leuco state exhibits an affinity toward the interior amorphous zones of cellulose fibers. Upon uniform absorption, a subsequent oxidation phase utilizing hydrogen peroxide, sodium perborate, or atmospheric exposure restores the dye to its insoluble polymeric state, trapping it permanently within the substrate. As a premier OEM Sulphur Red 14 Manufacturer, Tianjin Sunrise Chem Group has perfected this molecular synthesis, minimizing insoluble impurities to prevent surface specking, thereby ensuring an extremely uniform, deep red-brown or copper shade across large-scale industrial runs.
Modern global fashion brands and institutional textile buyers operate under stringent environmental mandates. Historically, sulphur dyes faced scrutiny due to the release of heavy sulfides during the reduction process. Tianjin Sunrise Chem Group has engineered a paradigm shift by offering eco-friendly, low-sulfur variant formulations of Sulphur Red 14 that drastically decrease chemical oxygen demand (COD) and biochemical oxygen demand (BOD) in mill wastewater.
Our manufacturing and processing lines hold the prestigious ZDHC Level 3 (Zero Discharge of Hazardous Chemicals) and GOTS (Global Organic Textile Standard) certifications. These credentials guarantee that from raw material synthesis to packaging, our chemical processes prevent the introduction of restricted substances into the environment. By utilizing state-of-the-art closed-loop synthesis systems, we ensure that global brands can specify our OEM Sulphur Red 14 without jeopardizing their green credentials or violating strict regional import criteria like EU REACH or US TSCA.
Uncompromising quality assurance, technological innovation, and robust supply logistics aligned with international standards.
Every consignment undergoes detailed spectrophotometric evaluation and color-matching simulations to ensure strict shade consistency before dispatching to ports.
We configure dry powder concentrations from 100% standard to 180% high-strength variants, as well as customized liquid formulations for automated dosage systems.
Our direct access to raw materials and domestic intermediate factories immunizes our clients against wild raw material cost fluctuations and supply disruptions.
Analyzing how upstream raw material clustering and cutting-edge industrial parks support stable global export strategies.
The global dyestuff supply chain relies heavily on China due to its unparalleled chemical infrastructure. Our manufacturing facilities are located in highly integrated industrial parks, assuring stable electricity, steam, and environmental management systems. This upstream cluster effect enables us to secure essential raw materials like nitrochlorobenzene, sulfur, and various aromatic intermediates without domestic transit friction.
In addition to raw material security, the focus on environmental protection is the cornerstone of our innovation. By utilizing automated synthesis lines, we minimize batch-to-batch variation, which is a major issue with smaller, non-integrated manufacturers. Our centralized waste-treatment systems decompose chemical effluent to inert by-products, ensuring our factories operate continuously, even during stringent seasonal environmental inspections by the government. This resilience directly translates into uninterrupted deliveries for our international client base.
Deploying Sulphur Red 14 across major industrial applications to unlock maximum color yield and processing efficiency.
Used extensively for cotton warp yarn in denim configurations to achieve rich, earthy red undertones. Combining Sulphur Red 14 with Sulphur Black provides a range of vintage, deep brown-black shades that have high wash-fastness and attractive fading properties sought after by luxury fashion brands.
In the packaging industry, color fastness to light and bleeding is essential. Sulphur Red 14 exhibits stellar affinity for unbleached kraft pulp, producing cardboard packaging that remains vibrant under variable storage conditions and humidity without color migration.
For natural animal hide colorations, the leuco form of Sulphur Red 14 penetrates deeply into the dense fibrous structure of the leather. This results in uniform pigmentation that does not crack or rub off during dry or wet mechanical processing.
Ensuring cross-compatibility with various dyeing techniques like continuous pad dyeing, exhaust dyeing, and package dyeing.
For multinational buyers, procuring industrial chemical colorants is a multi-layered process that demands supply security and documentation accuracy. We assist global procurement departments by offering detailed technical files, including Safety Data Sheets (SDS), certificates of analysis (COA), and third-party eco-toxicity reports. This transparent documentation speeds up custom clearances and factory audits.
Furthermore, Tianjin Sunrise Chem Group offers customized packaging configurations. We supply dynamic bulk orders in 25kg multi-layer kraft paper bags, durable woven bags, or heavy-duty 500kg super sacks designed for automated hopper systems. By integrating container-loading protocols with specialized desiccant and moisture barrier linings, we prevent moisture absorption and caking during maritime transport. This guarantees that whether your mill is in Southeast Asia, South America, or Europe, the chemical properties of our Sulphur Red 14 remain stable upon arrival.
Visualizing our industrial storage capabilities and automated container loading operations executing global deliveries.
Expert answers to chemical formulations, application techniques, and regulatory compliance queries about Sulphur Red 14.
Sulphur Red 14, historically registered under the Colour Index as C.I. Sulphur Red 14, is a complex, high-molecular-weight sulfurized dye structure. It is synthetically generated by sulfurizing specific aromatic intermediates, yielding a highly stable, water-insoluble compound that delivers intense reddish-brown tones on cotton fibers once reduced and oxidized.
At Tianjin Sunrise Chem Group, every single production batch undergoes standardized laboratory testing. We utilize high-resolution spectrophotometers to measure color shade values (Delta E values) and compute exact dyestuff strength percentage against master standards. We ensure that only batches with zero shade deviation and conforming strength ratios are approved for container packing.
Our Sulphur Red 14 formulations conform to the Zero Discharge of Hazardous Chemicals (ZDHC) Level 3 standard and hold the Global Organic Textile Standard (GOTS) certification. This confirms the absence of restricted arylamines, alkylphenol ethoxylates (APEOs), and heavy metal contaminants, allowing your finished textiles to easily pass OEKO-TEX Standard 100 audits.
Yes, we specialize in OEM services. We can customize the concentration of Sulphur Red 14 from standard 100% strengths up to ultra-concentrated 180% variations. We also manufacture liquid formats for automated liquid dispensing systems in advanced textile mills, mitigating dust exposure and improving operational safety.
Sulphur Red 14 must be reduced with sodium sulfide (Na2S) or glucose in a highly alkaline bath (pH 11–12) at temperature ranges of 80°C to 90°C. Complete reduction to the leuco state requires approximately 15–20 minutes, during which the solution changes color, indicating maximum solubility and fiber affinity before padding or exhaustion.
Sulphur Red 14 offers superior wet and wash-fastness compared to traditional Direct dyes due to its insoluble oxidized polymeric structure. While Reactive dyes offer a brighter color gamut, Sulphur Red 14 provides a highly economical, lightfast, and durable option for deep red-brown earth tones, making it ideal for heavy workwear, denim, and packaging papers.
To prevent atmospheric humidity from causing dry powder to cake, we pack our shipments in high-density polyethylene (HDPE) bags inside multi-ply kraft paper sacks or drums. We place moisture-absorbing silica packs within each pallet container, which are subsequently wrapped in moisture-proof stretch film for marine transit.
Yes, it is highly compatible with other sulfur dyes, including Sulphur Black 1 and Sulphur Blue 15. Blending these colorants allows mills to obtain complex olive, khaki, dark brown, and deep bronze colors, which maintain shade stability under repeated washing cycles.
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