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HS Code |
115436 |
| Chemical Name | 3,5-Dichlorophenyl Thioethanol |
| Cas Number | 2820-27-9 |
| Molecular Formula | C8H8Cl2S |
| Molecular Weight | 207.12 g/mol |
| Appearance | Yellow to brownish liquid |
| Boiling Point | 120-125°C at 12 mmHg |
| Density | 1.37 g/cm³ at 20°C |
| Solubility | Slightly soluble in water; soluble in organic solvents such as ethanol and DMSO |
| Purity | Typically ≥ 98% |
| Smiles | CCSCC1=CC(=CC(=C1)Cl)Cl |
| Storage Conditions | Store in a cool, dry, well-ventilated area; keep container tightly closed |
As an accredited 3,5-Dichlorophenyl Thioethanol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Amber glass bottle, 100 grams, with tamper-evident cap and chemical label displaying "3,5-Dichlorophenyl Thioethanol," hazard warnings, and safety instructions. |
| Shipping | **Shipping Description:** 3,5-Dichlorophenyl Thioethanol is shipped in sealed, chemical-resistant containers to prevent leaks and contamination. The shipment follows appropriate regulations for hazardous chemicals, including proper labeling, cushioning, and secondary containment. Temperature and light exposure are controlled as necessary, with clear documentation accompanying each package for safe and compliant transportation. |
| Storage | 3,5-Dichlorophenyl Thioethanol should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers and acids. Keep it away from heat sources, direct sunlight, and moisture. Proper chemical labeling and secondary containment are recommended to prevent accidental release. Use appropriate personal protective equipment when handling. |
Applications of 3,5-Dichlorophenyl Thioethanol in Industrial ManufacturingAs a direct manufacturer, we deliver 3,5-dichlorophenyl thioethanol with consistent purity for advanced synthesis and specialized downstream applications. Below are key industrial sectors utilizing this intermediate, along with practical integration insights and established standards for usage in each field. 1. Pharmaceutical Intermediate SynthesisDownstream pharmaceutical plants use our material as a core building block in the synthesis of active pharmaceutical ingredients, especially in the development of advanced intermediates for anti-infective and cytostatic drug molecules. The thioether group and dichloro substitution pattern facilitate selective reactions, enabling targeted chemistries in multi-step organic routes supported by cGMP protocols. Our bulk supply supports route scouting and production batches for regulated market APIs. Industry compliance standards
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2. Agrochemical Active Ingredient ManufacturingAgricultural chemical producers rely on 3,5-dichlorophenyl thioethanol for the construction of sulfur-containing building blocks. The compound is crucial in introducing specific thioether linkages in post-emergence herbicide syntheses as well as fungicidal and insecticidal active compounds. The dichloro-substituted aromatic structure enhances target activity and environmental persistence, vital for agrochemical efficacy and regulatory registration data. Industry compliance standards
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3. Specialty Polymer FunctionalizationPolymer compounders and advanced material producers utilize this raw material to graft, modify, or terminate polymer chains in order to impart high electron density, enhanced hydrophobicity, or functional thioether groups on technical polymers. The dichlorophenyl motif creates distinct physical-chemical attributes in polymers for demanding engineering applications such as high-performance coatings and specialty adhesives for electronics or automotive uses. Industry compliance standards
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4. Fine Chemical Synthesis for Dye and Pigment ManufacturingColorant and pigment producers select 3,5-dichlorophenyl thioethanol as a key functional intermediate in the custom synthesis of high-stability azo and sulfur dyes. The compound enables introduction of both electron-withdrawing chlorinated groups and chemically robust thioether moieties, foundational for high lightfastness and water resistance essential in textile, inkjet, and coating colorant applications. Industry compliance standards
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Every batch tells a story at our facility, and 3,5-Dichlorophenyl Thioethanol has earned its own place on our production line thanks to years of close work with real users. Labs and plants rely on chemicals with consistent identity, high purity, and minimal contaminants, especially in processes where the cost of failure means more than just wasted raw materials. We craft this thioethanol derivative with those realities in mind, producing a product that brings true value to research and industrial synthesis.
Around here, chemistry grows from hands-on attention. 3,5-Dichlorophenyl Thioethanol, or 3,5-DCPTE as our teams call it on the floor, leaves our plant under strict criteria shaped by repeated feedback cycles. Our production process uses raw materials sourced from long-standing partners with proven track records for reliable shipments and transparent quality assurance practices.
We measure chloride content and organic impurities down to levels that might slip through the net at less diligent facilities. Purification steps matter, because even small differences in residual solvents can spell trouble for downstream reactions—especially where coupling efficiency, crystallization, or biocatalysis come into play. We retain chromatography data and analytical certificates on every lot, making documentation available on request. It isn't about regulatory compliance for its own sake; clear documentation and full traceability minimize guesswork later.
Currently, our standard specification defines assay values above 98.5% as measured by GC, which reflects what customers have needed for preparative organic chemistry and pharmaceutical research. Moisture content regularly comes in below 0.2% by Karl Fischer titration because excess water complicates grignard and nucleophilic substitution work. We run additional screens for residual starting materials, which sometimes slip through in less disciplined production lines, and we investigate any batch that shows signs of unusual color or off-spec aroma—real indicators of minor byproduct formation.
This molecule doesn't win beauty contests, but its value emerges in the reactions it can unlock. Researchers and process chemists use 3,5-Dichlorophenyl Thioethanol both as a functional intermediate and as a building block for more complex targets, such as custom ligands, sulfur-containing pharmaceuticals, and specialty agrochemical scaffolds. Customers upstream sometimes specify this compound for its dual reactivity—carrying both a thioether and a chlorinated aromatic system, providing multiple points for further transformation.
We understand that in organic synthesis, small changes in side-chain structure or aromatic substitution can cause valuable intermediates to behave unpredictably. For example, the difference between a para- and meta-chlorinated isomer isn't academic; it can mean the difference between clean coupling and tricky purification. We tune our own process to minimize positional isomer contamination, drawing from years of troubleshooting. This means real-world benefits—less downstream waste, a higher chance for immediate success in target-oriented synthesis, and confidence that spectra will match the reference.
Outside of fine chemical synthesis, some groups bring this compound into work on advanced materials. The dichloro groups can modulate the electron density and reactivity profile of polymers or specialty adhesives. We've seen customers report sharper selectivity in bioconjugation protocols, where the thioethanol group serves as a flexible handle for further modification. Several industrial clients leverage its solubility in aprotic solvents, achieving smoother dispersion during batch charging than with some less functionalized thiols.
On the production floor, we handle plenty of sulfur intermediates, but every structure comes with unique quirks. Compared to unsubstituted phenyl thioethanol, the dichloro version needs tighter control during distillation to avoid thermal decomposition, and it resists oxidation a bit more robustly due to the electron-withdrawing effects of the chlorines. Side-by-side in the lab, you’ll notice fewer trace oxidation products in the dichloro material after exposure to air, making storage logistics simpler and reducing the frequency of re-analysis.
We field regular questions about the distinctions between 3,5- and 2,4-dichlorinated analogs. We’ve handled both, and it’s easy to see the 3,5 material crystallizes more easily under controlled cooling, thanks to reduced ring strain and intermolecular repulsion. That translates to higher yields after work-up and easier handling in production-scale quantities. While both can appear as off-white to pale yellow solids depending on trace impurities, we find the 3,5 product resists discoloration over time in sealed containers, signaling more stable minor impurity profiles.
Compared with dialkylthioethers lacking aromatic substitution, 3,5-Dichlorophenyl Thioethanol proves more forgiving under common storage conditions, showing less volatility loss and lower susceptibility to foul odors. That matters for regular plant maintenance and for keeping shipping staff happy. On the regulatory side, the extra chlorination demands a closer look at local and international transport guidelines. Our experience with labeling and documentation streamlines customs clearance, so end-users spend less time explaining paperwork and more time running reactions.
In practice, issues crop up less often when end users work closely with the source. Our manufacturing experience repeatedly shows that shared process details prevent common errors. Some labs underestimate the sensitivity of this compound to elevated temperatures, especially during solvent removal where local hotspots can kick off decomposition. We advise slower rotovap rates and overhead stirring in jacketed vessels, then provide actual temperature recommendations based on batch data, not just handbook values.
Solubility poses another sticking point. 3,5-Dichlorophenyl Thioethanol dissolves best in polar aprotic solvents, like DMF or DMSO, but struggles in plain hydrocarbons. Many older writeups bury this fact, leading to wasted time. We document best practices for getting clean solutions and minimize risk by packaging in amber glass or HDPE to block light and exclude moisture. Years ago, a customer insisted on drum packaging to save cost, but reports of degradation and container swelling quickly taught us to stick with smaller, sealed vessels.
We’ve also encountered requests for “ultra-dry” lots for air- or moisture-sensitive chemistry. Rather than blanket-drying all batches, we coordinate with clients, prepare material to order under inert gas, and ship with sealed ampoules. This direct feedback loop improves outcomes for both sides, sidestepping the waste and delays created by intermediate resellers.
Trust emerges batch by batch. We keep full records from raw materials through to finished product. Every kilogram receives its own ledger entry with inspection steps, test results, and photos of appearance. In our experience, quick problem solving means more when clients aren't waiting for answers to travel from third-party brokers. The data lives at our site, and chemists can get answers in real time if something doesn’t look or smell right during use.
We sometimes collaborate on pilot projects or custom synthesis, where tight timelines and high purity go hand in hand. Feedback from these projects regularly circles back into our production SOPs. A small plant counts on flexibility, so our operators cross-train to handle both regular production volumes and occasional process tweaks for custom requirements. Changing a reaction vessel seal or finetuning a purification gradient might seem small, but these adjustments drive higher reliability over the long term.
Regulatory compliance goes beyond boxes ticked on a form. We monitor changes in international hazard classifications, update packaging and transport procedures accordingly, and keep our partners in the loop. For example, when the shipping codes for chlorinated aromatics changed, we updated labeling systems and alerted all standing customers, avoiding a wave of rejected shipments at customs clearance. Direct communication prevents costly interruptions and strengthens technical partnerships.
By keeping direct control over every aspect of manufacturing, we address quality, safety, and reliable delivery in ways that remote suppliers and anonymous dropshippers can’t match. Each time we tune a distillation or refine analytical methods, we’re working from feedback delivered by people who actually run reactions and scale up products—not just spreadsheet data.
End users depend on knowing how a product behaves in their own systems, so we collect performance reports and share those insights. A pharmaceutical client once showed us how trace levels of a certain byproduct disrupted their crystallization protocol. Working together, we isolated the root cause in a contaminated cleaning solvent, traced it back through our plant, and retooled the process. Both sides benefited: they met their project deadline, and we improved our cleaning regime across all sulfur chemistry lines.
For new applications, such as custom organometallic complexes or on-demand linker modification, our product's chemical profile stays consistent over time. No surprises at the NMR or during HPLC analysis. That predictability reduces troubleshooting cycles for research groups and gives process scale clients better control over yield and purity. In the last year, one customer scaled from test-tube synthesis to hundred-gram lots for commercial development, using the same raw material without a single failed batch—a result of painstaking control over process variables at our end.
Supply chains in specialty chemicals live and die on stability, agility, and mutual trust. As disruptions arise—too-frequent over the last decade—we’ve learned the hard way how important direct lines of communication are. Delays upstream with chlorinated benzene feedstocks threaten to grind workflow to a halt unless we can offer immediate, honest forecasts. Rather than pushing hollow promises, we give early warning and offer short-term alternatives, including advice on substituting other phenylthioethanols that can tide over a process without compromising safety or contaminating final products.
Through the pandemic years and in the aftermath, our plant rethought how we source every input and built contingency plans. Dual sourcing for chlorinated aromatics and careful inventory management of sulfur precursors means we rarely get caught by a single-point failure. While this adds complexity, it cushions our customers from price shocks and short notice shortages, giving labs the reliability they need to plan multi-month projects.
We’ve encountered surprise regulatory checks and batch holds at ports, particular with new environmental packaging requirements. Having a direct link back to our own dock doors lets us jump into action—correct documentation, compliance declarations, and packaging upgrades—without needing to chase half a dozen intermediaries.
Technically-oriented clients often need access to our in-house analytical team to compare their own results with factory certificates. We open our books and records on request, because the end goal is the same for both sides: a product that performs on demand and leaves no room for unintended consequences in critical applications.
We recognize the growing demand for greener processes, even in specialty chemicals. Our plant has transitioned to closed-loop solvent recovery for thioethanol production, reducing waste and minimizing aromatic emissions. Regular audits and in-depth analysis of byproduct streams flagged solvents we could recycle rather than discard. Cutting these emissions aligns with both safety targets and rising expectations from global partners.
Energy use plays its own role. Our distillation and purification cycles use thermal integration and staged chillers, dropping both plant power needs and final product cost. We conduct regular reviews to spot chances for further efficiency. These changes sound small in isolation, but over years, the impact becomes clear in total waste reduced and energy saved—sharing those results with our larger partners strengthens the relationships we rely on.
Packaging improvements matter too. By moving away from universal plastic drums in favor of specialty sealed glass and HDPE, we keep our product stable longer, cut down on returns, and reduce the volume of hazardous waste. End users notice the difference: less product loss, fewer complications during unpacking, and easier compliance with waste handling requirements.
What we know about 3,5-Dichlorophenyl Thioethanol comes straight from people who use it every day. Phone calls about purification issues, email requests for custom drying, and lab visits to troubleshoot a sluggish coupling—each direct interaction feeds our understanding. This input shapes everything from our raw material screening to our shipment size options.
We face competition from larger manufacturers who sometimes undercut on price by skipping steps our users depend on: lot-by-lot COA transparency, fast answers to technical queries, and willingness to customize packaging or drying protocols. Our scale lets us prioritize real communication over volume. If a client needs a rare impurity tracked, or batch traceability back to the first IO reagent, we can provide that granularity. If a new customer faces trouble with an unusual solvent, we share hands-on recommendations instead of legal boilerplate.
The wide range of applications—ranging from pharmaceutical R&D to specialty material synthesis—means we never take a single-use case for granted. We document and pass on the lessons from each situation because we know small improvements at our end translate into saved time and resources at another lab down the road. Our continued investments in both people and process support these incremental improvements.
Over the years, it’s become evident that the reliability of our 3,5-Dichlorophenyl Thioethanol reaches further than its shelf life or its analytical profile. It extends into our technical support, traceability systems, adaptive packaging, and the personal connections we build with customers in labs and plants around the world.