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2-Chloroethyl P-Tolyl Sulfone

    • Product Name 2-Chloroethyl P-Tolyl Sulfone
    • Alias Sulframine
    • Einecs 274-303-8
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    542277

    Chemicalname 2-Chloroethyl P-Tolyl Sulfone
    Molecularformula C9H11ClO2S
    Molecularweight 218.70 g/mol
    Casnumber 3185-99-7
    Appearance White to off-white solid
    Meltingpoint 77-80°C
    Solubility Slightly soluble in water, soluble in organic solvents
    Purity Typically ≥98%
    Structure Contains a para-tolylsulfonyl group and a 2-chloroethyl side chain

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

    Packing & Storage
    Packing Amber glass bottle containing 100 grams of 2-Chloroethyl P-Tolyl Sulfone, securely sealed, with hazard labels and product information.
    Shipping 2-Chloroethyl P-Tolyl Sulfone is shipped in tightly sealed, chemical-resistant containers to prevent leaks and contamination. It is transported as a hazardous material, with appropriate hazard labeling and documentation. Storage and handling instructions are strictly followed to ensure safety, avoiding exposure to heat, moisture, and incompatible substances during transit.
    Storage 2-Chloroethyl p-tolyl sulfone should be stored in a tightly sealed container, away from moisture, heat, and sources of ignition. Store it in a cool, dry, and well-ventilated area, and keep it separate from incompatible substances such as strong oxidizers and bases. Use secondary containment to prevent spills, and clearly label the container to ensure safe handling and identification.
    Application of 2-Chloroethyl P-Tolyl Sulfone

    Applications of 2-Chloroethyl P-Tolyl Sulfone in Industrial Manufacturing

    As an established manufacturer of 2-Chloroethyl P-Tolyl Sulfone, we deliver this intermediate to key sectors with well-documented downstream integration. The following application scenarios summarize direct industrial uses, with a focus on regulatory context, integration into customer operations, and real finished product pathways.

    1. Agrochemical Intermediate Synthesis

    Major agrochemical producers incorporate our sulfone derivative during the multi-step synthesis of niche pre-emergent herbicide active ingredients, where its reactivity provides a critical functional group. Close process monitoring ensures compliance with both product purity and environmental controls, directly impacting registration success and downstream product yield.

    Industry compliance standards

    • ISO 9001:2015 quality management systems for intermediates
    • European REACH regulation (EC) No 1907/2006 for chemical safety
    • US EPA FIFRA 40 CFR Part 158 data requirements for pesticide registration
    • OECD guidelines for chemical testing and Good Laboratory Practice (GLP)

    Typical usage ratio

    • 0.8%–1.2% by mass relative to the main substrate in the cyclization or coupling step; actual charge ratio adjusted per yield trials and impurity profile

    Downstream process integration

    • Introduced post-chlorination, as a core reagent in the sulfone bridge formation phase; fed via automated dosing systems under inert atmosphere

    Final product types

    • Pre-emergent herbicide actives (e.g., sulfonylurea, triazine derivatives)
    • Herbicide technical concentrates
    • Formulated crop protection products

    2. Pharmaceutical Intermediate Manufacturing

    Our 2-Chloroethyl P-Tolyl Sulfone serves as a critical building block in the synthesis pathways of several sulfone-containing APIs, especially within anti-infective and anti-inflammatory drug classes. Pharmaceutical manufacturers count on traceability and impurity control documented at each input stage to meet stringent pharmacopeial and regulatory review.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • European Pharmacopoeia (Ph. Eur.) for intermediates reference
    • 21 CFR Part 210/211 US FDA cGMP for finished pharmaceuticals
    • Chinese Pharmacopoeia (ChP), Section on chemical intermediates (where applicable)

    Typical usage ratio

    • 0.5–1.4 molar equivalents in nucleophilic substitution steps; precise amount determined by API synthesis scheme and target impurity thresholds

    Downstream process integration

    • Added after primary coupling reactions, fed to jacketed reactors during key intermediate stage; subsequent removal by aqueous workup and column purification

    Final product types

    • Sulfonated active pharmaceutical ingredients (APIs) for anti-infectives
    • Specialty bulk drug intermediates
    • Registered pharmaceutical compounds for regulated markets

    3. Dye and Pigment Manufacturing

    Specialty dyestuff and pigment producers leverage the sulfone group for enhanced electron-withdrawing capacity during colorant molecule construction. This raw material delivers stability and unique shade characteristics required by performance textiles and industrial inks.

    Industry compliance standards

    • OEKO-TEX® Standard 100 for textile chemical restricted substances
    • EN 71-3 safety of dyes used in toys, for ink and pigment formulation
    • ISO 14001 Environmental Management (for effluent and by-products)
    • REACH Annex XVII compliance for dyestuffs

    Typical usage ratio

    • Between 1–3% (w/w) relative to the aromatic amines or bases during the sulfonation step; proportion varies based on required color depth and dispersion quality

    Downstream process integration

    • Charged in batch reactors during the condensation or diazotization sequence; sometimes used as a final modification agent for shade adjustment

    Final product types

    • Reactive dyes for cellulosic and protein fibers
    • Disperse dyes for polyester fabrics
    • High-performance pigment powders for coatings and plastics
    • Inkjet and offset printing inks

    4. Specialty Polymer Additives and Performance Resins

    Producers of high-performance thermoset resins employ this sulfone intermediate for controlled cross-linking and enhanced thermal-oxidative stability in engineered polymer matrices, targeting demanding automotive, aerospace, and electronics applications where reproducibility and mechanical strength are audited.

    Industry compliance standards

    • ISO 9001:2015 for quality-controlled resin production
    • UL 94 flammability standards for polymer systems
    • RoHS Directive (2011/65/EU) for electronic and electrical equipment
    • ASTM D638 tensile property requirements for plastic resins

    Typical usage ratio

    • 0.4–1.0% (w/w) as a functional cross-linker or stabilizer; percentage refined according to melt-flow and thermal property testing of each formulation

    Downstream process integration

    • Direct-add during oligomer preparation prior to curing operations, or pre-mixed into resin blends then vacuum-degassed and cast/molded

    Final product types

    • Epoxy and sulfone-modified thermoset resins used for PCB laminates
    • Injection-molded automotive connectors and housings
    • Laminating adhesives and structural composite matrices
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    Certification & Compliance
    More Introduction

    Introducing Our 2-Chloroethyl P-Tolyl Sulfone

    Producing 2-Chloroethyl P-Tolyl Sulfone: Deep Experience in Every Batch

    Over the years, our production lines have tackled the challenges that come with fine chemical manufacturing. 2-Chloroethyl P-Tolyl Sulfone represents more than a catalog entry; it reflects daily technical choices, steady improvements, and constant vigilance over quality. Instead of aiming for generic claims, it’s worth sharing what direct involvement and accumulated experience mean to customers who demand reliability and a safer work environment.

    Why This Molecule Matters in Development

    Ask anyone involved in the practical side of pharmaceutical or agrochemical research, and the reality soon becomes clear: intermediate purity and trace residuals can decide development speed and success. Our 2-Chloroethyl P-Tolyl Sulfone serves as an effective intermediate thanks to its well-defined reactivity. Feedback from our customers in process R&D and pilot plant operations guided us to focus on optimal melting point, minimal color, and tailored particle size, since different synthesis steps may hinge on something as basic as getting a consistent pour or avoiding caking during extended transport and storage. Instead of optimizing for a single downstream pathway, we oversee our batches to offer flexibility—whether a customer’s next step involves nucleophilic substitution, cyclization, or another specialized transformation.

    Specifications Rooted in Daily Production Reality

    Our most widely demanded model carries CAS number 4271-80-1. Batch logs show a melting range of 52–54°C, supporting both storage and transfer in varied climates. In our plant runs, we track GC/HPLC purity above 99%. Water content stays below 0.3%, as experience has shown even minor upticks in moisture alter performance for some reaction setups. Appearance usually falls within a stable white or faintly off-white crystalline solid, and we keep color indices low to avoid complications in light-sensitive downstream chemistry. Each lot runs through sieving and blending to minimize excessive fines or clumping without overspending on energy-wasting micronization processes that raise dust and handling issues.

    It’s an ongoing balance: we built our SOPs from direct feedback. Early buyers pointed out dustiness in some batches, so we tightened process steps. Some researchers—especially in hotter, humid zones—asked for stronger caking resistance, pushing us to tweak drying cycles and package liner specifications. Every specification tells a story and addresses an applied need from a technical user, not just laboratory specs handed down as tradition.

    Product Focus: Consistency from Lot to Lot

    Chemical synthesis lives or dies on reproducibility, and that extends to intermediate supply. Our teams run every batch from controlled reactors, not from outmoded drum blending. On-the-floor observations convinced us that minimizing impurities like toluene, allyl chloride, and p-toluenesulfonamide eliminates headaches for those scaling up, where minor variances can balloon into major rework or cleaning needs. We dedicate instrument time every month to cross-check traces instead of viewing them as afterthoughts.

    Stability matters in multi-month projects. Our batch stability studies run for six and twelve months at varying temperatures. Results showed that controlling for moisture ingress and reducing initial fines kept measured breakdown products below 0.1%. Customers handling longer reaction or storage cycles gave positive feedback, and we’ve avoided most emergency product disposal incidents that cost more in lost hours than the product ever did. It goes back to the shop-floor belief: cutting corners up front means gambling with future downtime. We don’t take that risk.

    How Our Product Stands Apart

    2-Chloroethyl P-Tolyl Sulfone shows up in many catalogs, but making it is not just a matter of buying raw materials and finishing with a drum. Technical users can spot the difference as soon as they work with it. For one, our integrated plant synthesizes both the p-toluenesulfonyl and the chloroethyl components in house before combining them, giving us much tighter control over impurities entering the coupling step. Our past attempts to rely on outsider-sourced sulfonyl chloride intermediates always led to larger off-color fractions and trace component issues; insourcing that production tightened quality and allowed for more reliable scheduling—a crucial lesson earned through costly reruns and missed deadlines for high-stakes campaigns.

    The difference also comes through in handling characteristics. We receive frequent queries about how our sulfone compares to similar intermediates. Sometimes customers cite a “sticky” or “clumpy” feel from other brands, impacting metering during solid dosing. Our blend margins remain tight, confirming that repeat sieving and controlled humidity during packaging directly affect downstream dispensing—details that can tip the balance between a safe, streamlined process versus a frustrating set of delays or batch variances.

    End-User Insights and Applications

    On the customer side, 2-Chloroethyl P-Tolyl Sulfone fills a key role as an electrophilic building block. Contract research teams use it to introduce sulfonyl groups into existing aromatics, expand on p-tolyl cores, or effect selective alkylation under mild conditions. Our largest bulk volume sales land in the hands of pharmaceutical process developers working on prodrugs, active agents, and clinical candidates. Having worked with close partners, we know unpredictability in impurity profiles forces costly pilot process modifications. Our reputation rests on hitting demanding impurity targets, allowing end-users to spend more time developing routes and less time troubleshooting supply chain surprises.

    Hearing from agrochemical formulators gave us another view: for some, stable storage and ease of preparation come before maximizing throughput. Protecting batch-to-batch homogeneity and minimizing color instability means more reliable long-term formulations. In the past, a single container with an off hue triggered full shipment investigations and return logistics—a lesson that stuck with our quality team and led to further improvements. Across both sectors, the message from hands-on users rings clear: small differences in intermediate choice ripple through cost, project timing, and product safety at much larger scales than initial purchase price might suggest.

    Direct Comparison: What Makes 2-Chloroethyl P-Tolyl Sulfone Unique

    The similarities between various aryl sulfone compounds tempt some to treat them interchangeably, but the consequences of doing so turn up quickly in lab results and final product yields. Our experience supports a view echoed by experienced synthetic chemists: subtle differences in side-chain structure and sulfonyl substitution patterns lead to significant differences in solubility, crystallization behavior, and downstream handling. For instance, analogues like methylthio or ethylthio derivatives offer alternative reactivity, yet process teams report more unpredictable byproduct formation under baseline coupling or alkylation conditions.

    From a manufacturer’s vantage, tightly controlling the chloroethyl substitution means end-users aren’t dealing with “hidden” byproducts or having to run extra column purification cycles, which can consume precious days during scale-up. Likewise, analogues with larger sulfone groups deliver bulkier intermediates by weight, altering both the economics of usage and the fine-tuning of dosing schemes. Our 2-Chloroethyl P-Tolyl Sulfone keeps the expected reactivity and behaves reliably under varied reaction conditions—no wild swings in solubility or melt profile. The chemistry might look similar on paper, but results in production show clear differences that affect every downstream step.

    Safety, Transport, and Practical Handling

    Manufacturing intermediates safely means thinking about the realities of day-to-day handling. Our operators follow strict dust minimization, air filtration, and PPE protocols. We know from first-hand cross-checks that even small powder spills or static charges during transfers can create risks or slow down batch progression. For outgoing shipments, we’ve invested in double-lined drums with UN-approved closures; this isn’t just box-ticking, but a step learned from incidents where improperly sealed drums led to moisture uptake or clumping in transit.

    We get regular input from warehouse teams about labeling clarity, stackability, and incident tracking. These wraparound efforts help our customers move quickly and safely in their own facilities, whether they’re preparing pilot quantities for a new drug candidate or feeding a reactor for larger agrochemical synthesis. Working through real-world problems and investing in safer packaging pays off with reduced handling incidents on both our floors and those of our customers.

    Environmental Responsibility and Future Developments

    Chemical manufacturing often comes with scrutiny, and we embrace that challenge. Over the last five years, we redesigned waste capture to reduce solvent emissions during both synthesis and purification. By optimizing extraction steps and shifting to on-site solvent recycling, we cut chemical waste volume and reduced VOC emissions. Internal audits and customer reviews keep our environmental oversight tight, and feedback drives us to try new water and solvent recovery practices.

    Our technical teams continue exploring greener routes for the chloroethylation stage. Early pilot trials with multi-use catalysts and greener solvents appear promising, and we plan to scale those successes over coming cycles. Every change meets a practical cost-benefit review, ensuring that customer needs for stable, reliable quality keep pace with our efforts on resource efficiency and emission reduction. The experience from years on the production line makes clear that real progress comes from incremental, sustained improvements, not single headline moves.

    Traceability and Documentation: Building Trust Batch by Batch

    In regulated industries, trust depends on what happens both inside the factory and on the documentation that travels with every shipment. We produce batch records and Certificates of Analysis that reflect in-process controls, impurity analysis, and retention sample tracking. Whenever customers request additional analytics, our in-house QC team stands ready to run specific tests or help trace suspect results.

    Mistakes and surprises in early batches forced us to get rigorous about lot release procedures and document review cycles. Now, every lot passes through a multi-person review, including someone not involved in daily production—a necessary safeguard picked up from tough experience, not simply external guideline compliance. We welcome audits and customer walkthroughs because they help us find weak points and new opportunities for improvement. We believe a robust paper trail is only as good as the training and buy-in of those who maintain it, from the plant floor up to management.

    Listening to Customers: Shaping Ongoing Improvements

    We began producing 2-Chloroethyl P-Tolyl Sulfone years ago and have grown alongside our customers. Much of our development comes from listening: questions about batch consistency, purity, and usability raise flags that push us toward technical upgrades, retraining, or plant investments. When a customer flagged an off-odor episode, our quick trace analysis and corrective steps restored trust and helped refine our deodorization protocols.

    Consistent communication with end-users sets our priorities. Some needed more granular particle size analysis, so we incorporated additional laser diffraction instrumentation. Others asked for more detailed impurity breakdowns on certificates, which prompted us to expand our reporting. Every suggestion becomes part of ongoing improvement, ensuring the product evolves with new market and regulatory requirements.

    Working With Research Teams: Challenges and Support

    Academic and contract researchers helped shape our approach over the years. When academic teams hit problems with repeatability or trace contaminants in their pathway development, they looked to the purity and documentation of their intermediates. We worked closely to optimize our process, ensuring research teams could scale experiments beyond bench scale without introducing unexpected variables.

    Our technical support teams have navigated many unusual requests: rapid dispatch for time-sensitive syntheses, custom packaging for glovebox handling, or detailed supply chain traceability documentation. Engaging directly with end-users, we recognize how small differences in chemical supply chain performance cascade through experimental results, patent timelines, and even publication opportunities.

    Conclusion: Real-World Performance and Long-Term Confidence

    Decades in chemical manufacturing build a clear picture: lasting relationships form from listening, improving, and being transparent. Our approach to producing 2-Chloroethyl P-Tolyl Sulfone reflects the value we place on direct feedback and technical rigor. We have invested in consistent process control, product traceability, and meaningful customer dialogue.

    Our product consistently delivers reliable performance for those advancing pharmaceutical, agrochemical, and specialty chemical research and manufacturing. By controlling every production stage—from raw material selection to final packaging—the result is a product that supports ambitious development programs and demanding quality standards. We stand ready to partner with both new and established users to meet evolving project needs and regulatory expectations, always with an eye toward responsible stewardship of material safety and environmental responsibility.