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3-Chloro-1,2,4-Triazole

    • Product Name 3-Chloro-1,2,4-Triazole
    • Alias 3-Chloro-1,2,4-triazol
    • Einecs 221-573-5
    • 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

    742624

    Chemical Name 3-Chloro-1,2,4-Triazole
    Cas Number 5455-88-1
    Molecular Formula C2H2ClN3
    Molecular Weight 103.51
    Appearance White to off-white crystalline powder
    Melting Point 70-74°C
    Density 1.58 g/cm3 (at 20°C)
    Solubility In Water Moderately soluble
    Purity Typically ≥98%
    Storage Conditions Store in a cool, dry place
    Synonyms 3-Chloro-1H-1,2,4-triazole
    Smiles Clc1ncn[nH]1
    Inchi InChI=1S/C2H2ClN3/c3-2-4-1-5-6-2/h1H,(H,5,6)

    As an accredited 3-Chloro-1,2,4-Triazole factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing A 100-gram amber glass bottle labeled "3-Chloro-1,2,4-Triazole," featuring hazard warnings, batch number, and manufacturer details.
    Shipping 3-Chloro-1,2,4-Triazole is shipped in tightly sealed containers, protected from moisture and light, and packed according to chemical safety regulations. It should be transported in compliance with local, national, and international regulations for hazardous substances. Appropriate labeling, documentation, and temperature controls are ensured to guarantee safe delivery and handling.
    Storage 3-Chloro-1,2,4-Triazole should be stored in a tightly closed container, in a cool, dry, and well-ventilated area, away from sources of ignition and incompatible substances such as strong oxidizers. Protect from moisture and direct sunlight. Ensure proper labeling and keep away from food and beverages. Follow all relevant safety and regulatory guidelines for chemical storage.
    Application of 3-Chloro-1,2,4-Triazole

    Applications of 3-Chloro-1,2,4-Triazole in Industrial Manufacturing

    3-Chloro-1,2,4-Triazole serves as a key intermediate in multiple technically demanding industrial sectors. Its unique triazole structure and reactive chlorine atom are valued in specialized downstream syntheses involving heterocyclic chemistry, supporting the development of high-value end-products within strictly regulated environments. As the direct manufacturer, we ensure raw material suitability through documented supply chain traceability and technical support for every approved application route.

    1. Agrochemical Active Ingredient Synthesis

    Major agrochemical companies use this compound during the synthesis of select fungicide actives, where its triazole ring forms the structural core for new-generation crop protection molecules. Demand stems from continual updates to active ingredient registration dossiers, especially under regions tightening residue and environmental controls. Our material is qualified specifically for these high consistency needs, where input quality impacts both process yield and downstream regulatory approvals.

    Industry compliance standards

    • ISO 9001:2015 (Quality Management Systems for chemical manufacturing)
    • EU Regulation (EC) No 1107/2009 on the placing of plant protection products on the market
    • U.S. EPA Pesticide Registration Standards (FIFRA regulations)
    • China GB/T 1604 (Quality Standards for Agrochemical Intermediates)

    Typical usage ratio

    • 5–25% of total starting material mass in targeted synthetic condensations depending on crop protection molecule type
    • May vary as per target triazole fungicide or herbicide moiety and efficiency of coupling step

    Downstream process integration

    • Introduced at the heterocyclic assembly step via controlled batch addition with temperature monitoring
    • Direct reaction with hydrazines or arylamines under inert conditions, facilitating subsequent formation of active triazole derivatives

    Final product types

    • Triazole-class fungicides (e.g., propiconazole, tebuconazole precursors)
    • Herbicide intermediates with improved environmental profiles
    • Registered pesticide technicals for global crop markets

    2. Pharmaceutical Intermediate Production

    Key pharmaceutical manufacturers employ this molecule to construct advanced heterocyclic building blocks, providing scaffolds for the synthesis of select antifungal agents and central nervous system (CNS) drug candidates. Material purity and traceability are especially scrutinized for supporting process documentation in regulatory submissions. Auditable batch release and impurity profiling ensure compliance for cGMP-directed workflows during clinical trial and commercial supply synthesis.

    Industry compliance standards

    • ICH Q7 (Good Manufacturing Practice for Active Pharmaceutical Ingredients)
    • European Pharmacopoeia (Ph. Eur.) Monographs relevant to intermediates
    • U.S. FDA 21 CFR Part 211 Current Good Manufacturing Practice for Finished Pharmaceuticals
    • China GMP for APIs (2010 version, updated requirements)

    Typical usage ratio

    • 1.5–12% by molar proportion within two-step chemistry yielding triazole-based APIs
    • Adapted by process chemists based on target pharmacophore yield and process impurity minimization

    Downstream process integration

    • Charged during the advanced intermediate coupling phase under GMP-compliant closed reactors
    • Participates in nucleophilic aromatic substitution or condensation with amine-bearing precursors in solvent systems such as DMF or toluene

    Final product types

    • API intermediates for triazole antifungal drugs (e.g., fluconazole, voriconazole)
    • Advanced CNS compound precursors
    • Custom intermediates for orphan and pipeline drug programs

    3. Specialty Dye and Pigment Manufacture

    Triazole derivatives based on this raw material provide core chromophore functionality for pigments and dyes where deep, stable coloration and solvent resistance are critical. Dye formulators require feedstocks exhibiting narrow impurity bands to ensure consistent batch coloration, especially for pigment grades demanding high fastness in automotive paints and textile coatings. Our production maintains strict in-process control to support these specifications as demanded by leading global pigment houses.

    Industry compliance standards

    • REACH Regulation (EC) No 1907/2006 for chemical safety and usage in Europe
    • ISO 9001:2015 (Specialty chemical quality management)
    • OEKO-TEX Standard 100 (textile dye safety)
    • Japan Eco Mark Product Certification for dyes and pigments

    Typical usage ratio

    • 8–35% of reactive feedstock basis, optimized by target absorption spectrum and pigment intensity
    • Dose tailored by desired color depth, solvent compatibility, and substrate requirements

    Downstream process integration

    • Integrated at the colorant precursor step, typically via cyclization or coupling with aromatic diazonium salts
    • Enters the dye framework during the chromophore core build-out in agitator-controlled reactors

    Final product types

    • High-performance triazole azo dyes
    • Organic pigments for automotive coatings and plastics
    • UV-resistant colorants for specialty textile printing

    4. Corrosion Inhibitor Formulation for Industrial Fluids

    Fluid engineering firms specify this compound in the manufacture of corrosion prevention additives for closed-system industrial coolants and oilfield water treatments. The triazole ring provides surface interaction properties crucial for multimetal protection in recirculation systems, supporting long service intervals in demanding environments. Custom packaging and quality documentation mitigate contamination risk, aligning with end-user audits for system-integrity chemical additives.

    Industry compliance standards

    • ASTM D1384 (Corrosion test for engine coolants in glassware)
    • OECD Guidelines for Testing of Chemicals – Biodegradation standards
    • ISO 22241 (Requirements for chemical additives in diesel exhaust fluids)
    • API 682 (Sealing Systems for Centrifugal and Rotary Pumps – material compatibility references)

    Typical usage ratio

    • 0.5–3.5% in concentrate formulations, modulated by system metallurgy and operational fluid pH
    • Adjusted to maintain multi-month protection in blended coolants or water-based hydraulic fluids

    Downstream process integration

    • Blended into corrosion inhibitor premix at dedicated tanks prior to introduction into bulk fluid blending
    • Dosage protocols designed according to specific metal contamination profiles and system lifetime needs

    Final product types

    • Corrosion inhibitor packages for engine coolants
    • Oilfield produced water treatment additives
    • Industrial closed-loop water system protectants

    5. Advanced Electronic Chemical Synthesis

    Within the electronics industry, select triazole intermediates derived from this chloro compound are used for constructing specialized function materials in photoresists, circuit board laminates, and high-durability coatings. Requirements include batch-to-batch purity, ultra-low trace metal content, and validated QC analytics, supporting integration within ISO-certified electronics chemical production lines. Our production line features dedicated purification and metal ion reduction steps for this demanding market segment.

    Industry compliance standards

    • IPC-4101 (Specification for Base Materials for Printed Boards)
    • ISO 9001:2015 (Electronic chemicals manufacturing QA/QC)
    • RoHS Directive 2011/65/EU (Restriction of hazardous substances in electrical and electronic equipment)
    • UL 796 (Printed-Board Safety Standard)

    Typical usage ratio

    • 1–10% in triazole monomer fraction; adapted by final film resistance and polymer cross-linking demands
    • Level optimized for resin compatibility and electrical insulation properties required by the downstream client

    Downstream process integration

    • Conjugated in situ during polymerization for photoresist resins or high-resistance electronic encapsulation compounds
    • Reacted with phenolic compounds or epoxy resins in controlled environment blending rooms for consistency assurance

    Final product types

    • Photoresist polymers for PCB fabrication
    • Resin-based solder masks
    • Protective insulating varnishes for microelectronic assemblies
    Free Quote

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    Certification & Compliance
    More Introduction

    3-Chloro-1,2,4-Triazole: Practical Insights from the Manufacturing Floor

    Manufacturing chemicals like 3-Chloro-1,2,4-Triazole brings its own set of challenges and rewards. Our production lines don’t run on guesswork. They operate on lessons learned from real-world handling, scaling up from lab-scale glassware to robust steel reactors. Only after many test runs and some missteps, a process for 3-Chloro-1,2,4-Triazole achieves the efficiency, purity, and consistency that makes it valuable for our customers worldwide.

    Understanding 3-Chloro-1,2,4-Triazole’s Essentials

    3-Chloro-1,2,4-Triazole, with a formula of C2H2ClN3, fills a vital role in multiple synthesis routes. The triazole ring, modified with a chlorine atom, opens up a world of functionalization that direct competitors, like straight 1,2,4-Triazole, just can’t deliver. Our output offers a white to off-white crystalline powder, typical moisture and solvent residuals well below the thresholds needed by most downstream users. We run batch-to-batch checks, not just for purity but for consistency in particle size and appearance, because issues here can ripple through downstream steps.

    We manufacture several models, including one tailored for crop science intermediates and another aimed at pharmaceutical building blocks. Some buyers request extra drying, while others prioritize speed. We keep these lines separate to prevent cross-contamination, a small but crucial aspect of keeping trust in our materials. Every kilo we ship follows the same strict batch release, not only through HPLC and NMR, but by verifying low levels of residual solvents and other impurities. Our teams have handled process changes when a customer needed tighter chloride specification, and we worked with them to adapt. This kind of collaboration only grows when everyone is honest about what each process step needs.

    The Difference from Standard Triazoles

    Putting 3-Chloro-1,2,4-Triazole next to plain 1,2,4-Triazole, the differences pop out for any chemist who’s handled both. The chlorine atom changes reactivity, making it possible to build more complex molecules. 3-Chloro stands out in nucleophilic substitution reactions. Instead of working through awkward protection strategies or running extra steps to install chlorine later, starting from this molecule streamlines work. Our customers in pharma and agrochemicals have often turned to this route when they need the triazole ring but with a shortcut into further modification.

    This variant also, based on our long-term experiences, keeps better under regular storage conditions. Some triazoles break down from light or pick up moisture. Here, you see less degradation, especially if stored in sealed containers away from direct sunlight. That’s not just what the textbook says—it matches what we’ve seen in long-term drummed stocks, including several stress-test campaigns.

    What Goes into Every Batch: Our Process in Focus

    To make 3-Chloro-1,2,4-Triazole, our engineers monitor raw material quality right at goods-in. We source specific hydrazine and cyanogen chloride derivatives, with checks for residual water and trace organics. By keeping raw materials pure, trouble rarely sneaks into later stages. During synthesis, we maintain rigid temperature and agitation profiles. Not all reactors are made the same. Mixing speeds and temperature gradients can affect yield and byproduct patterns. Over several years, small process tweaks, including different agitation regimes and alternative solvents, helped us eliminate the few troublesome side-products that once contaminated our early batches.

    Every charge gets sampled at key milestones. We sample not only at end-point, but at the intermediate crystallization and filtration steps. Fine filtrates, slow crystallizations, and even subtle shifts in pH can tilt the impurity profile. Sometimes an operator flags a batch for a slightly odd off-white color, or a minor gritty residue. Investigations frequently reveal a subtle process drift—so we never skip an inspection.

    How Purity and Performance Make All the Difference

    Some triazole derivatives allow a little leeway on color or residuals. That’s not the case for 3-Chloro-1,2,4-Triazole where downstream performance can hinge on minimal off-color or moisture. In our early years, a batch with out-of-spec chloride levels reached a customer. Their process stalled, costing both sides. No one wants repeats like that, so our lab now checks batches more frequently and broader, running both classical wet chemical analyses and instrumental methods.

    We’ve worked with pharmaceutical partners who brought in their own analytical methods, asking for side-by-side validation. A handful of times, their approach caught something ours missed, prompting us to add extra test points. Openness in method sharing built better trust. Over the years, we’ve dialed in moisture levels under 0.1%, chlorides below 0.05%, and total related substances under 0.2%. These are not just numbers—our partners in scale-up now trust shipments will perform as expected. This trust comes from real results, not just data sheets.

    Impact on Downstream Synthesis

    The reactivity profile of 3-Chloro-1,2,4-Triazole gives manufacturers flexibility to adapt. In pharma, a common use shows up in preparation of triazole-linked drug candidates. In crop protection, it features as a core scaffold or an intermediate that can rapidly pick up more functionality. The presence of the chlorine allows substitution with nucleophiles, and sometimes, skipping entire protecting group strategies saves several steps. That cuts both time and cost for our customer’s process. By maintaining high chemical purity, we help maximize reaction yields and reduce hassle for chemists in both research and plant-scale settings.

    Some downstream chemistries, especially for developing new fungicides, spot problems if the 3-Chloro-1,2,4-Triazole carries extra water or traces of parent triazole. We’ve heard these stories from customers who shifted from other sources to ours. They reported fewer purification headaches, saving days of work. We keep reviewing their feedback and tracking it back into our own batch documentation. The learning cycle never stops.

    Learning From Setbacks

    No manufacturer avoids problems forever. Our teams have faced unplanned plant shutdowns, sudden raw material shortages, and process hiccups. Years ago, an upstream solvent contamination threw production off for a full week. Every kilogram from those days had to be tagged and reprocessed, and a process review highlighted exactly which valves and holding tanks contributed. In those moments, we saw why traceability and record-keeping can mean the difference between a minor hiccup and a major batch recall.

    Another time, a global logistics pipeline froze due to unforeseen world events. Customers still needed their shipments. We ran extra night shifts and diverted some product to different ports. Shipments arrived a day or two late in some cases, but none were cancelled, and our customers kept their lines moving. This kind of responsiveness, built up from repeated “what-if” planning, matters as much as any certificate of analysis. It’s not automatic; it comes from learning through each crisis and keeping open lines of honest communication between sales, production, and logistics.

    Direct Differences: Insights Over Generic Products

    Within the world of triazoles, not everything reacts—or handles—alike. Chemically, the 3-chloro version sets itself apart from other triazoles by enabling cleaner substitution chemistry. It stands out from options like 1,2,4-Triazole and 3-amino-1,2,4-triazole, which lack the same halide reactivity. Customers who tried to adapt their older processes often found side-products and inconsistent yields before making the switch to our 3-chloro material.

    Handling this compound in-house, our technical teams notice that it proves less prone to clumping compared to some moisture-sensitive triazoles. Storage headaches become less frequent, especially over long-term stockpiling. Many of our biggest customers run continuous processes rather than campaign batches. They’ve told us how a consistent, low-moisture, free-flowing product saves them both downtime and cleanup. These firsthand, practical insights shaped the way we train our operations staff and set quality standards.

    Serving a Demanding Customer Base

    We primarily serve pharmaceutical, agrochemical, and specialty chemical producers investing large sums in R&D and production scale-up. Our partners aren’t just looking for a chemical—they look for reliable timelines, documentation, and yes, people who pick up the phone and answer technical questions. One recurring theme echoed back: reliability in quality and documentation means less production risk. Even the best process will stumble if the input quality shifts from shipment to shipment.

    To serve these needs, our plant teams keep a sharp eye on every handoff, from raw material sourcing, blending, and reaction, through to final packing. Each operation slot, test, and handover has its history logged and reviewed before sign-off. Standard production runs can exceed a metric ton, some in smaller campaigns for highly customized needs. Adjusting to these scales without missing the fine quality nuances takes more than just equipment—it takes an experienced team always asking what can go wrong, and how to catch it before it matters outside our gates.

    Building Better Processes and Support

    Over time, close partnerships with key customers led us to fine-tune the way we design our batch records and release testing. Customers submitting feedback, whether it’s about a minor shipment damage or a question about traces levels, get prompt follow-ups. Some issues that seem small—such as a slightly off-odor or a just-visible dust grade—can signal early-stage problems in drying or isolation. We encourage direct feedback, sharing photos and in-plant observations when something runs off-normal.

    At several points, our engineers and chemists have worked onsite with customer teams during plant commissioning or troubleshooting. This face-to-face troubleshooting brings both sides up to speed and helps avoid wasted time. We believe that proactive consults before scaling up any new 3-Chloro-1,2,4-Triazole transformation prevent issues months before they show up as batch failures. Practical fixes, based on shared data, create win-win cases for everyone involved.

    Credibility and Verification at Every Step

    Compliance is central to our approach. We do not wait for problems to highlight the need for traceable supply and finished goods. Trained staff keep records up-to-date from each reactor run to warehousing. We invite customer audits and share documentation on demand. Questions about a batch’s origin or testing history get clear, immediate answers. This openness grows from our own experience handling recalls and addressing tough questions from quality assurance teams across the globe.

    Our certifications, quality systems, and regulatory registrations exist for more than show; they work because they grew from actual need. Early in our production years, several audit findings forced us to revisit everything from cleaning verification to re-training handling staff. These efforts paid dividends. Customers who once ordered just a few kilos now order tons, relying on an entire infrastructure built around practical, documented controls.

    Future Developments and Ongoing Learning

    Chemistry does not stand still, and neither does our process design. We review reaction data, talk with raw material vendors, and stay in close touch with R&D and tech transfer groups. Trends point to tighter impurity control, lower moisture demand, and more detailed trace analytics. Our teams adapt through ongoing method improvements and direct collaboration with global partners. We also run experiments to reduce processing waste and energy usage, part of a broader push toward streamlined, more sustainable manufacturing.

    Some chemical producers look to generic cost reductions as the main future shift. Our experience says otherwise: for 3-Chloro-1,2,4-Triazole, success comes from doing the little things right every time. That means regular maintenance of plant gear, investing in staff training, and fostering a culture where any team member can halt production if they spot something wrong. These habits build confidence in every parcel, not just the few lots subjected to routine audit.

    Customer-Centricity and Reputation Building

    Our business did not grow just by offering a molecule at the lowest price. It grew as word traveled that the product performs, that documentation matches what operators see in the drum or bottle, and that fixes happen quickly when mistakes arise. As more players join the market, those who value their own production stability tend to stick with suppliers who share their standards—and prove it.

    We still meet new customers who arrive after quality headaches from cheaper suppliers. After switching, many state that on-time delivery, handling advice, or product troubleshooting make as big a difference as the material itself. Our technical support teams, including staff with production and R&D experience, back up every lot with data and straightforward answers.

    Why the Details Matter, Every Batch, Every Time

    For anyone seeking 3-Chloro-1,2,4-Triazole in the real world, the difference goes well beyond a CAS number and purity check. Each batch embodies hundreds of technical choices, practical experience, and lessons learned from both success and the rare setback. We understand that margins for error run thin, that each improvement in purity or reactivity can save someone else costly failed reactions, and that our reputation rides on every kilogram sent out the door.

    This direct, hands-on experience shapes the way we produce, test, and support 3-Chloro-1,2,4-Triazole. It is the product of a team effort, integrating feedback, discipline, and steady learning. Our hope is that in every bottle or drum our customers receive, they find evidence of practical know-how, commitment to transparency, and a readiness to keep building better, batch by batch.