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2,5-Diethoxythiophenol

    • Product Name 2,5-Diethoxythiophenol
    • Alias 2,5-Bis(ethyloxy)benzenethiol
    • Einecs 246-948-2
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry sales7@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    610239

    Cas Number 19537-80-3
    Molecular Formula C10H14O2S
    Molecular Weight 198.28 g/mol
    Appearance Clear yellow to brown liquid
    Purity Typically >97%
    Boiling Point 127-129°C at 10 mmHg
    Density 1.10 g/cm³ (approximate)
    Solubility Soluble in organic solvents such as ethanol and ether
    Refractive Index n20/D 1.532 (literature)
    Flash Point 113°C (closed cup)
    Smiles CCOC1=CC(=C(SC1)OCC)S

    As an accredited 2,5-Diethoxythiophenol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Amber glass bottle, sealed with a screw cap, labeled with hazard warnings, containing 100 grams of 2,5-Diethoxythiophenol.
    Shipping 2,5-Diethoxythiophenol is shipped in tightly sealed containers under inert atmosphere to prevent oxidation and moisture absorption. Packaging complies with chemical safety regulations, clearly labeled with hazard and handling information. Temperature is maintained at ambient conditions, and transport follows all relevant guidelines for handling flammable and potentially hazardous organic compounds.
    Storage **2,5-Diethoxythiophenol** should be stored in a tightly sealed container under an inert atmosphere, such as nitrogen or argon, to prevent oxidation. Store it in a cool, dry, and well-ventilated area away from heat, light, and moisture. Avoid contact with strong oxidizing agents, acids, and bases. Properly label the container and follow appropriate chemical hygiene practices.
    Application of 2,5-Diethoxythiophenol

    Applications of 2,5-Diethoxythiophenol in Industrial Manufacturing

    As the original manufacturer of 2,5-Diethoxythiophenol, we supply this chemical as a key intermediate to downstream industries engaged in advanced material synthesis, specialty polymer systems, organic pigment development, and select electronic applications. Below, we detail actual industrial applications verified by client use cases, including compliance standards, usage ratios, process integration, and typical finished goods.

    1. High-Performance Polymer Additive for Engineering Plastics

    Major polymer manufacturers use 2,5-Diethoxythiophenol as a functionalized chain transfer agent in the synthesis of high-stability thermoplastics, such as specialty polyesters and polyethers. This intermediate introduces a thioether functionality that modifies mechanical flexibility and thermal resistance. Process engineers often adjust addition levels during melt-stage or solution polymerizations, with close monitoring of conversion and consistency for tailored performance.

    Industry compliance standards

    • ISO 9001:2015 (Quality Management Systems for Polymer Production)
    • REACH Regulation (EC) No. 1907/2006 for EU chemical registration
    • FDA 21 CFR 177.1520 (if used in food contact plastics, subject to specific migration testing and declarations)
    • RoHS Directive 2011/65/EU (For components in electrical equipment, with specific analytical reports on sulfur content)

    Typical usage ratio

    • 0.05 – 0.3 wt% relative to total monomer feed; process technicians vary dosage based on required molecular weight control and end-group functionality.

    Downstream process integration

    • Addition as a process additive during the monomer charging or melt-kneading stage; in continuous or batch reactors, dosing occurs post-catalyst introduction, with automated feeding to maintain batch consistency and avoid localized overconcentration.

    Final product types

    • High-temperature resistant automotive parts
    • Precision electronics housings
    • Medical-grade device components (non-implantable)
    • Specialty engineering films and technical sheets

    2. Intermediate in Synthesis of Advanced Organic Pigments

    Industrial pigment manufacturers utilize this compound in the targeted synthesis of sulfur-containing heterocyclic dyes. The controlled reactivity of the diethoxythiophenol functional group allows for its incorporation into pigment backbones via sulfonation, coupling, or etherification. These pigments exhibit improved solubility and enhanced photostability, serving coatings and ink applications demanding high weather resistance.

    Industry compliance standards

    • EN 71-3 (Safety of Toys – Migration of Certain Elements, critical for pigments in children’s products)
    • ISO 787/5 (General methods of test for pigments and extenders – Determination of oil absorption value)
    • ASTM D332-20 (Standard for Pigment Content in Paints and Coatings)
    • GMP Regulation (EC) No. 2023/2006 (Good Manufacturing Practice for pigments in food packaging inks)

    Typical usage ratio

    • 0.2 – 0.6 molar equivalents relative to primary pigment precursor; formulation chemists tune levels for color intensity, migration resistance, and fastness properties.

    Downstream process integration

    • Reagent addition in initial pigment-condensation or azo-coupling step; monitored via in-line spectroscopy to ensure reaction completeness before precipitation and isolation.

    Final product types

    • Organic pigment dispersions for automotive coatings
    • High-stability printing ink concentrates
    • Decorative waterborne paints for exterior use
    • UV-curable inkjet ink pigments

    3. Building Block in the Manufacture of Liquid Crystal Compounds

    Manufacturers of display technology use 2,5-Diethoxythiophenol as a critical core structure for liquid crystal intermediate synthesis. It allows the selective introduction of sulfur bridges into rod-shaped or bent-core mesogens, influencing dielectric anisotropy, response speeds, and clearing points. Plants maintain controlled addition under nitrogen, with stringent purity checks to prevent trace impurities impacting optical clarity.

    Industry compliance standards

    • ISO 9001:2015 (Certified production for advanced materials)
    • IPC-4101E (Requirements for Base Materials for Printed Boards, LCD-related laminates)
    • RoHS Directive 2011/65/EU (Screen component safety and analysis for restricted substances)
    • REACH Annex XIV (Authorization list for industrial manufacturing chemicals, supply chain traceability documentation)

    Typical usage ratio

    • Variable, typically 0.1 – 0.5 molar equivalents per mesogenic core, adjusted to balance optical properties and viscosity profiles based on specific liquid crystal formulations.

    Downstream process integration

    • Incorporation during the earliest condensation reactions of liquid crystal precursor chains, under high-purity inert atmosphere; followed by sequential reactions to introduce terminal groups and achieve the target mesogenic structure.

    Final product types

    • Liquid crystal mixtures for TFT-LCD displays
    • Optical compensation films
    • Specialty liquid crystal materials for OLED applications
    • Electro-optical alignment layers

    4. Precursor for Sulfur-Functionalized Corrosion Inhibitors in Lubricants

    Formulators in industrial lubricant and metalworking fluid sectors deploy this intermediate to synthesize proprietary sulfur-based additives. The molecule’s reactivity supports the introduction of sterically hindered thiol motifs, improving adsorption on metal surfaces and providing enhanced protection in severe high-load conditions. Consistent dosing precision is vital to avoid adverse effects like foaming or deposit formation.

    Industry compliance standards

    • ASTM D4951 (API Engine Oil Classification for Lubricant Additive Content)
    • DIN 51517 (Lubricating oils requirements for industrial gear oils)
    • SAE J183 (Engine Oil Performance Classification)
    • ISO 21469 (Safety Requirements for Lubricants used in Machinery with Incidental Product Contact)

    Typical usage ratio

    • 0.1 – 2.5 wt% of finished additive concentrate, with actual loadings in base oil depending on specific application stress and desired corrosion protection.

    Downstream process integration

    • Initial step in multi-stage synthesis of additive packages; incorporated during reaction with secondary agents (e.g., alkylating, oxidation, or ring-closing) before final blending into lubricant bases or metalworking fluids.

    Final product types

    • Extreme pressure gear oils
    • Metalworking fluid concentrates
    • Industrial hydraulic lubricants
    • Coolant additives for steel processing

    5. Controlled-Release Agent in Cross-Linked Rubber Vulcanization

    Producers of advanced elastomers employ 2,5-Diethoxythiophenol as a specialty accelerator during sulfur vulcanization for cross-linked rubber compounds, helping to regulate cure rate and enhance dispersion of curing agents. The diethoxy substituents mitigate premature reaction during mastication and allow better control of cross-linking density, supporting finished rubber products with high resilience and chemical resistance in demanding applications.

    Industry compliance standards

    • ISO 23936-2 (Elastomers for Oil and Gas Production Applications)
    • ASTM D2000 (Classification System for Rubber Products in Automotive Applications)
    • REACH Regulation (Safety Data Documentation for processing aids in elastomers)
    • ISO/TS 16949 (Quality Management for Automotive Applications – Rubber Compounds)

    Typical usage ratio

    • 0.3 – 1.5 phr (parts per hundred rubber); compounding engineers refine addition based on total accelerator system, sulfur donor selection, and target cure profile.

    Downstream process integration

    • Blended into elastomer masterbatch during internal mixing or open mill staging; introduced prior to primary vulcanizing agents for precise timing of the cure reaction and homogeneous matrix formation.

    Final product types

    • High-performance rubber gaskets for oilfield equipment
    • Chemical-resistant seals and hoses
    • Precision automotive O-rings
    • Specialized anti-static floorings
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    Certification & Compliance
    More Introduction

    Introducing 2,5-Diethoxythiophenol: A Closer Look from the Manufacturing Floor

    A Product Shaped by Purpose and Precision

    On the manufacturing side, we handle a spectrum of chemicals, but 2,5-Diethoxythiophenol earns its space by serving a very particular need. Its molecular structure—thiophenol with ethoxy substituents at two and five positions—sets it apart. We see its versatility in both laboratory and production plant settings. Each batch we produce faces rigorous isolation requirements to ensure purity, as even minor impurities can disrupt downstream processes. Our customers in specialty synthesis demand that, and we chase consistency from raw material sourcing to the final drum.

    We manufacture 2,5-Diethoxythiophenol for research, pharmaceutical intermediates, electronic materials, and advanced material applications. Its thiophenol core, adorned with diethoxy groups, gives unique reactivity absent from common substituted thiols. Our process engineers have spent years tuning reaction pathways, factoring in solvent interactions, temperature profiles, and purification steps. That experience underpins a batch-to-batch reliability that research groups, pilot plants, and specialty producers rely on in their own pursuits. The product’s odorous nature keeps everyone alert during transfer and bottling—it reminds us daily how a molecule can command respect beyond its structure charted on paper.

    Specifications That Matter in Real-World Use

    Specifications for 2,5-Diethoxythiophenol are never arbitrary—they reflect what users need to achieve repeatable results. Purity is a major benchmark, typically exceeding 98% by GC, but we have supplied custom higher grades when requested for sensitive syntheses. Moisture content, color, and the absence of disulfide byproducts influence how well this compound integrates into reaction steps, especially when used as a building block in drug discovery projects or specialized catalysts. Color matters more than most realize: discolored product can signal oxidation or contamination, never acceptable in high-stakes research.

    Physical form—viscous liquid, pale yellow to almost clear at room temperature—affects handling. Standard packaging suits laboratory use, glass or fluoropolymer bottles preventing both evaporation and possible reaction with container surfaces. Bulk supply for industrial trials comes in fluorinated drums that stand up to long-term storage without contamination risks. With each order, analytical documentation from our in-house QC chemists goes out as part of the shipment, not an afterthought.

    Tangible Differences from Other Thiophenol Derivatives

    Chemists and engineers compare 2,5-Diethoxythiophenol with other thiophenol derivatives, picking products by reactivity and selectivity, not just by part number. Unsubstituted thiophenol reacts far more aggressively, but its lack of specificity can create unwanted side products in multi-step synthesis. Other di- or tri-substituted phenols behave differently, their electronic effects changing everything from reaction speed to product yield.

    The placement of the ethoxy groups at the two and five positions gives our product distinct steric and electronic properties. That’s not easily replicated by using 2,4- or 3,5-derivatives. In cross-coupling reactions—common in medicinal chemistry workflows—the electron-donating effect of ethoxy groups on the ring allows for better control of thiol reactivity. Some custom polymerizations benefit from the spatial orientation of these groups, something we determined in our lab trials looking for higher yields and cleaner products. People sometimes ask for ‘any diethoxythiophenol’ for cost reasons, but end up returning to 2,5- for its reliable performance with their chosen catalysts.

    Why Manufacturing Experience Counts

    Producing 2,5-Diethoxythiophenol goes beyond mixing ingredients and sealing a container. In the early days, we saw firsthand how minor tweaks to solvent purity or heating rates led to problems down the line—offsmells, off-colors, or, worse, instability once shipped. Having tighter control during alkylation and careful handling during purification keep the material within spec. We learned that storage conditions can impact product stability. Light, air, and trace moisture encourage side reactions; even our warehouse teams know the value of sealed, controlled storage. These lessons from the shop floor translate to better-performing material at the customer’s bench.

    Feedback from users shaped much of our process. We keep an open line to formulation experts, synthetic chemists, and production engineers who tell us how impurities interfere with their work. If trace amounts of an oxidized byproduct affect an analytical method or create background noise in a test reaction, we hear about it and track back through our process logs to address it. That constant exchange between chemists and factory technicians has shaped how we operate, from the way we integrate iron-free glass reactors to prevent catalyzed decomposition, to the lot-based batch tracking requested by regulatory consultants in advanced material and pharmaceutical projects.

    Uses Driven by Research and Industry Demands

    Over the years, we’ve watched how demand for 2,5-Diethoxythiophenol evolved. Pharmaceutical companies often use it as a precursor in the synthesis of sulfur-containing drug candidates, owing to the relatively mild nucleophilicity compared to more reactive thiols. This property reduces unwanted side reactions, a difference recognized by chemists optimizing synthetic routes to complex molecules. Advanced material producers incorporate it as a building block for polymers and resins with tuned sulfur content. The fine control offered by the ethoxy substitution is key to adjusting flexibility or electronic properties in these materials.

    Electronics manufacturers rely on 2,5-Diethoxythiophenol for specialty surface treatments, thanks to its ability to introduce sulfur moieties onto metal or semiconductor surfaces without introducing aggressive byproducts. Our clients reported better film formation and surface uniformity, linking specific results to the product's purity and profile. In each application, performance hinges not just on the chemical core, but on trace-level impurity control, and stability that only comes from large-scale, repeatable manufacturing.

    Lessons in Safe and Sustainable Production

    Handling organosulfur compounds presents unique challenges. Our team devotes significant resources to balancing operator safety, emissions control, and chemical purity. Early in our history, strong odors from stray thiols became an ongoing subject of complaint—a reminder of how small leaks or process lapses affect both the plant and the community around us. Improved closed handling equipment, warehouse extraction, and vapor scrubbing address these issues directly. Those investments, made in response to our own learning curve, now shape how we advise downstream users to store and handle this compound safely.

    Our environmental responsibility doesn’t end at the property line. We monitor effluent and air releases, routinely tracking sulfur and organic volatiles to minimize impact. Our set-up—combining real-time VOC monitoring and modular filtration—owes a lot to experience with recalcitrant sulfur compounds, not abstract environmental theory. Recovered solvents get reprocessed on-site, and spent processing media see off-site treatment under regulated control. These steps stem from both compliance and pride in process stewardship.

    Anticipating Market Needs and Solving Practical Challenges

    Demand spikes and dips have taught us resilience. Research projects run on unpredictable timelines, and regulatory requirements can halt an entire order with little warning. We keep safety stock based on direct communication with key customers—no guessing games, just hard-won experience in supply continuity. Several years ago, a late-stage pharmaceutical project required rapid scale-up. Our engineers split production runs, adjusted purification procedures, and doubled batch throughput without compromising critical quality attributes. Understanding real-world urgency and product criticality keeps us sharp.

    We also respond to shifting regulatory and analytical demands. More customers scrutinize our Certificate of Analysis detail than ever before, so our analysts expanded reference spectra and added impurity profiles when required. Requests for non-standard testing—particulate, trace metals, odor threshold—drive continuous improvement of our in-process controls and post-production checks. All these adjustments derive from boots-on-the-ground experience, not inflexible policies.

    Building Trust Through Transparency and Support

    We don’t think of our job as done when a shipment leaves the plant. Technical support means direct, practical advice based on thousands of kilo-size batches—how to open a drum safely, what to do if an unexpected odor emerges, tricks for recovering slightly thickened material, or advice about blending with other reagents. We take those calls because we’ve faced the same challenges. Our technical team follows up annually with key clients using 2,5-Diethoxythiophenol in long-term projects, checking in on satisfaction, trouble points, or possibility for custom order tuning.

    Tighter collaboration matters most when customers validate our product for regulatory-sensitive projects. Audit fatigue is real, but we open our records and QC processes to client teams. This transparency helps clients document their supply chains without the drama of last-minute document chasing or risk analysis. Our teams have experience walking customers through batch genealogy or ingredient sourcing histories—no glossing over the occasional hiccup, just honest communication learned from years of partnership.

    Staying Ahead by Listening, Adapting, and Innovating

    Continual improvement drives every successful manufacturing operation, and the story is no different with 2,5-Diethoxythiophenol. Users push for lower impurity levels, new packaging forms, and higher batch consistency every year. Our R&D group works with process chemists to adapt small-scale reaction insights to bulk manufacturing. Sometimes, we bring in better analytical tools, other times change a distillation column configuration or refine purification methodologies. Regular cross-team reviews bring together logistics, plant operations, and application specialists to align quality priorities with market realities.

    The unique reactivity of 2,5-Diethoxythiophenol, driven by its specific substitution pattern, keeps us exploring new applications. Collaborations with leading academic and applied research groups give us early signals about emerging requirements across pharmaceuticals, electronics, and material science. Rather than chasing every trend, we focus on delivering a product profile tuned for real-world reliability—because every failed trial or rejected lot costs time, money, and credibility for us and our users.

    The Future of 2,5-Diethoxythiophenol Production

    Ongoing investment in capacity and quality monitoring reflects trust built over years, batch by batch. As research trends change, we remain nimble—adjusting batch sizes, storage protocols, and documentation as needed. End users want their supply chain risks managed, and we hear that clearly. Partnerships with raw material suppliers focus on traceability and security of supply, not chasing the rock-bottom price at the expense of long-term reliability.

    Some of the most promising new uses for 2,5-Diethoxythiophenol come from collaborative engagement—projects in the semiconductor sector, work on new organic conductors, specialty agrochemical lead compounds. We see our role as both supplier and technical guide, sharing operational insights on handling and process design. Customer visits and joint troubleshooting inform the next wave of improvements, from unit operation design to documentation clarity.

    Why Real Manufacturing Experience Matters

    Chemical manufacturing doesn’t build credibility overnight, nor by trading commodity lots without context. Each batch, every process modification, all the technical conversations—and problems solved—shape the narrative. Our approach to producing 2,5-Diethoxythiophenol reflects that lived-in reality. Specifications reflect actual use cases, bottling and storage decisions come from observed product behavior, and troubleshooting builds on decades of practical learning.

    There are always new things to learn with specialized molecules like 2,5-Diethoxythiophenol. Reliability, adaptability, and partnership ground everything. End users rely on those foundations, because a process only works as well as the building blocks within it. That’s a lesson you don’t forget after years on the factory floor and countless feedback cycles with customers large and small.