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5-Chloro-1,3-Benzodioxole

    • Product Name 5-Chloro-1,3-Benzodioxole
    • Alias Piperonyl chloride
    • Einecs 207-963-7
    • 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
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    Specifications

    HS Code

    650586

    Chemical Name 5-Chloro-1,3-Benzodioxole
    Molecular Formula C7H5ClO2
    Molecular Weight 156.57 g/mol
    Cas Number 7051-34-5
    Appearance Colorless to pale yellow liquid
    Boiling Point 244-246 °C
    Melting Point N/A
    Density 1.32 g/cm3
    Refractive Index 1.594
    Flash Point 108 °C
    Smiles Clc1ccc2OCOc2c1
    Synonyms 5-Chlorobenzo[d][1,3]dioxole
    Purity Typically ≥98%
    Storage Temperature Store at room temperature
    Solubility Slightly soluble in water, soluble in organic solvents

    As an accredited 5-Chloro-1,3-Benzodioxole factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 100g 5-Chloro-1,3-Benzodioxole is supplied in a sealed amber glass bottle with hazard labeling and tamper-evident cap.
    Shipping 5-Chloro-1,3-Benzodioxole is shipped in tightly sealed containers, protected from moisture, heat, and direct sunlight. Packaging meets international chemical transport regulations. The product is labeled with appropriate hazard warnings, and shipping documents include Safety Data Sheets. Handle with care, ensuring compliance with local, national, and international chemical shipping guidelines.
    Storage **5-Chloro-1,3-Benzodioxole** 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, heat, and direct sunlight. Always follow appropriate safety protocols, wear suitable protective equipment, and ensure proper labeling and segregation within the chemical storage area.
    Application of 5-Chloro-1,3-Benzodioxole

    Applications of 5-Chloro-1,3-Benzodioxole in Industrial Manufacturing

    5-Chloro-1,3-Benzodioxole serves as a key intermediate in several industrial sectors due to its unique molecular structure and reactivity profile. Our production adheres to stringent quality standards, ensuring excellent performance in dedicated downstream processes. The following sections detail its principal application scenarios, specifying compliance requirements, common formulation ratios, process integration points, and representative end products.

    1. Pharmaceutical Intermediate for Antidepressant Synthesis

    Pharmaceutical manufacturers primarily utilize 5-Chloro-1,3-Benzodioxole as a building block during the multi-step synthesis of specific selective serotonin reuptake inhibitors (SSRIs). The compound’s substitution pattern enables regioselective formation of active pharmaceutical ingredients (APIs), reducing by-product formation and supporting yield optimization. Its use sits within highly regulated GMP environments, with careful lot traceability, and its addition point and concentration require precise control to ensure consistent impurity profiles across batch and continuous syntheses.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • US FDA 21 CFR Part 210/211
    • Ph. Eur. Monographs governing API synthesis
    • Chinese Pharmacopoeia (ChP) synthesis starting material guidance

    Typical usage ratio

    • 0.2 – 0.6 molar equivalents relative to the target heterocycle ring (dependent on yield targets and step efficiency optimization)

    Downstream process integration

    • Charged to the primary coupling step with amination reagents following initial protection reactions
    • Carefully metered under inert atmosphere prior to cyclization to minimize hydrolysis

    Final product types

    • Pharmaceutical-grade SSRIs (e.g., paroxetine, dapoxetine)
    • Other benzodioxole-derived central nervous system (CNS) active APIs

    2. Agrochemical Synthesis for Fungicide Intermediates

    In the crop protection sector, formulators rely on 5-Chloro-1,3-Benzodioxole as an intermediate for constructing ring systems found in advanced fungicide molecules. The compound’s halogenated aromatic core assures strong selectivity in nucleophilic aromatic substitution, amplifying target pathway activity in agrochemical end products. Manufacturers integrate this material into scalable, multi-stage syntheses, often in reactors with high corrosion and solvent compatibility, to deliver high-purity intermediates for further chlorination and formulation.

    Industry compliance standards

    • Food and Agriculture Organization (FAO) Technical Specifications for Pesticides
    • US EPA FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act) for intermediates
    • ISO 9001:2015 Quality Management Systems
    • REACH Registration, Evaluation, Authorisation and Restriction of Chemicals (EU)

    Typical usage ratio

    • 8–15% by weight of total batch mass during initial ring-closure reactions (exact quantity set by targeted batch scale and conversion yield monitoring)

    Downstream process integration

    • Dosed as the limiting reagent during heterocyclization
    • Reacted under basic or catalytic conditions with triazoles or imidazoles for target scaffold elaboration

    Final product types

    • Precursors for strobilurin-analog fungicides
    • Aromatic intermediates for triazole-based crop protection products

    3. Fragrance Ingredient Synthesis (Synthetic Muguet/Lily-of-the-Valley Notes)

    Within the fragrance compound industry, 5-Chloro-1,3-Benzodioxole acts as a vital precursor for the development of certain specialty aroma molecules, especially those providing fresh muguet and green-floral base notes. Its halogenated ring structure enables selective etherification reactions, yielding complex molecules required in fine fragrance compositions. Tight odor threshold controls and purity demands necessitate close process monitoring from initial material charging through finished aroma batch distillation.

    Industry compliance standards

    • IFRA (International Fragrance Association) Standards and Guidance
    • EU Cosmetic Regulation (EC) No 1223/2009 for restricted aromatic components
    • ISO 9235:2013 Aromatic Raw Materials

    Typical usage ratio

    • 1–3% of batch mass (precursor loading calibrated per desired aldehyde content and final fragrance note intensity)

    Downstream process integration

    • Introduced during early etherification or acylation stages
    • Processed under controlled pH conditions to avoid off-odor byproducts

    Final product types

    • Muguet floral aroma ingredients for fine fragrances
    • Flavor compounds for high-end personal care bases (e.g., shampoos, lotions)

    4. Intermediate for OLED and Electronic Chemical Synthesis

    Electronics material manufacturers incorporate 5-Chloro-1,3-Benzodioxole as a core intermediate to introduce benzodioxole motifs into the backbone of high-performance polymers and small-molecule semiconductors. The electron-withdrawing chloro substituent modulates optoelectronic properties, improving charge carrier mobility in organic light-emitting diode (OLED) materials and enabling compatibility with advanced deposition techniques. Controlled addition and purification steps mitigate impurity-related device instabilities during mass production.

    Industry compliance standards

    • RoHS Directive (2011/65/EU) for electronic chemical content
    • IEC 62474 Material Declaration Standards
    • ISO 14001:2015 Environmental Management Systems

    Typical usage ratio

    • 0.5–2.5 mol% in copolymer synthesis or 5–12% by mass in monomer-derivative specialty intermediates (fine-tuned by molecular design requirements for device performance)

    Downstream process integration

    • Fed into Suzuki or Stille coupling steps for chromophore extension
    • Purified via recrystallization prior to thin-film deposition or ink formulation

    Final product types

    • OLED emitting layer materials
    • Functionalized electronic-grade specialty monomers and polymers

    5. Fine Chemical Intermediate for Specialty Dye Manufacturing

    Dye manufacturers leverage the chemical reactivity of 5-Chloro-1,3-Benzodioxole to generate complex chromophoric cores in synthetic dyes used across textiles, paper, and plastics. Its structure enables selective halogen substitution or functional group elaboration, producing coloration agents with enhanced light-fastness and wash durability. Integration into multi-stage synthesis allows for batch or semi-continuous conversion, with purity checks at each process step to ensure compliance with regulatory limits for restricted aromatic amines and residual halides.

    Industry compliance standards

    • OEKO-TEX Standard 100 chemical content requirements
    • EN 71-3:2019 Safety of Toys (migration of certain elements—for pigments in printing inks)
    • ZDHC (Zero Discharge of Hazardous Chemicals) MRSL

    Typical usage ratio

    • 2–8% by weight of initial dye batch (variation based on desired absorption spectrum and batch scale)

    Downstream process integration

    • Reacted in the chromophore assembly step, often under controlled temperature and pH
    • Subsequent purification prior to coupling with solubilizing or brightening groups

    Final product types

    • Disperse and reactive dyes for polyester and cellulose fibers
    • Colorants for plastics and high-performance coatings
    Free Quote

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    Certification & Compliance
    More Introduction

    5-Chloro-1,3-Benzodioxole: Practical Value from Controlled Chemistry

    Our Direct Experience with 5-Chloro-1,3-Benzodioxole

    Manufacturing 5-Chloro-1,3-Benzodioxole starts with careful raw material selection, precise batch management, and a focus on both purity and trace quality. A straightforward composition—chlorinated aromatic core fused with a dioxole ring—makes this compound a key intermediate that supports a range of downstream applications in pharmaceuticals, agrochemical synthesis, and specialty materials. Over years in the plant, we’ve grown familiar with its crystalline appearance and unmistakable aromatic character, traits that signal consistency from batch to batch.

    Consistency doesn’t arrive overnight. In our experience, deviations—even small—can introduce headaches in downstream chemistry. We’ve responded by managing every stage of process validation, from chlorination to careful distillation and purification, ensuring that the product matches not just standard specifications, but also practical needs in industrial settings. This hands-on approach lets us talk in concrete terms about what works in day-to-day operations, not just what appears on a label.

    Model and Specifications Rooted in Utility

    We produce several models of 5-Chloro-1,3-Benzodioxole, including high-purity batches aimed at sensitive applications. Each lot is measured by GC and NMR against keys like minimum purity, color, particle size (where applicable), and residual solvents. Based on direct client feedback, specifications go beyond charts and reflect real-world performance: a clear, nearly colorless solid, low moisture content, and a reliable shelf life under proper storage.

    Some users expect trouble with byproducts, but after years running our reactors, we know that well-regulated temperature and optimized catalyst loading minimize side reactions—especially unwanted over-chlorination or ring opening. On critical runs, trace-level impurities get flagged before packaging.

    Usage Draws on the Compound’s Core Chemistry

    We’ve seen 5-Chloro-1,3-Benzodioxole feed seamlessly into pharmaceutical syntheses where the dioxole moiety stabilizes reaction intermediates. Many customers, particularly API producers, use it for its robust performance in multi-step routes toward antifungal, cardiovascular, or central nervous system actives. In the agrochemical sector, feedback points to value in key fungicides and herbicides—here, the compound’s chemical stability pays dividends during formulation and prolonged storage.

    Working with diverse clients, we’ve learned that usability is less about the actual formula and more about predictability—products that flow cleanly, dissolve without hazing, and respond to scale-up without process drift. Each of these points shows up in our post-sale support, especially when new users encounter handling or equipment issues. Questions about solvent selection, blend compatibility, and safe delivery rarely get answered in data sheets, but they matter most at the plant floor.

    Differences from Other Similar Compounds

    Direct comparison to relatives like 1,3-benzodioxole or its brominated analog reveals distinct advantages. Adding the chloro substituent increases oxidative stability, leading to fewer breakdown products in exposed or harsh synthetic conditions. This extends the compound’s lifetime and offers smoother performance in reagents, especially in Grignard and palladium-catalyzed couplings. Those subtle but noticeable differences result from how the molecule interacts under heat, light, or when exposed to aggressive bases—patterns we’ve studied by tracking years’ worth of batch records and customer feedback.

    Higher halogenated derivatives risk unwanted toxicity or regulatory restrictions, and we’ve watched regulatory changes force shifts in industrial practice. Sticking with mono-chlorinated benzodioxoles, users limit exposure risks while gaining enhanced utility over non-substituted variants. We’ve monitored reaction kinetics and stability in actual processing—not just academic settings. These differences play out in yields, ease of work-up, and isolation rates, so our recommendations stem from hundreds of pilot and scale batches, not just sales copy.

    Supporting Downstream Processing

    In our production, attention starts at the very beginning: choice of chlorinating agent dictates impurity profiles, and solvent controls affect particle flow in later processing. For pharma and agro formulators, a predictable impurity fingerprint supports both analytical work and regulatory compliance. Our standard models are controlled for trace metals and residual solvents, a requirement echoed by regulatory standards in multiple key markets.

    From dispatch to end-use, we watch for hurdles. Most users request a stable crystalline solid, free from moisture and easy to integrate with minimal extra drying. Our packaging lines use sealed, inert atmospheres and rugged drums to support this—not a generic safeguard, but an answer to early client complaints about caking and air ingress. Over time, feedback led us to tweak packaging shapes, desiccant loads, and transport arrangements based on real-world breakage rates and seasonal temperature swings.

    During switchover periods, technical calls from clients help us refine material specifications related to melting behavior and solubility in different carrier solvents. No single sheet of paper can anticipate a reaction working in a multi-ton vessel, and some of our best changes have come from solving those problems in partnership with formulators and synthesis chemists outside our facility doors.

    Persistent Challenges and Real Solutions

    No chemical makes its journey from reactor to truck without hitches. Moisture absorption—especially in humid environments—has always posed a threat to long-term stability. Our line operators noticed a pattern of clumping in open-air storage, prompting us to invest in improved drum liners and cold storage options for sensitive lots. Sometimes, a fix seems simple—better batch tracking, more diligent final inspection—but large-scale production punishes complacency. Each improvement in handling or storage came at the advice of operators and logistics teams who bear the brunt of product returns.

    Another real pain point appears in waste minimization. Solvent recovery systems, strict process monitoring, and secondary containment have all reduced site emissions and limited losses from failed runs. Every kilogram saved increases total output and supports client confidence in delivery times. Consistent investment in cleaner processing brings upstream cost savings, which we can then pass on through pricing or by absorbing seasonal raw material spikes. This cycle supports both the environment and the bottom line.

    Insights from Industry Partnerships

    As we’ve supplied 5-Chloro-1,3-Benzodioxole for decades, relationships across the supply chain have taught us more than any internal analysis. Scale-up projects, often running under tight schedules, bring urgency to questions about reactivity in actual plant conditions. We’ve seen how small changes in reaction conditions—shift in pH, trace water, or small differences in catalytic loading—can push output in unintended directions. Here, our technical staff teams up directly with customer R&D, offering not just samples but hands-on troubleshooting as formulations get stress-tested and new routes get piloted.

    From such projects, we’ve collected a database of process adjustments, failures, and outright surprises—knowledge that now informs our standard operating practices. When an agrochemical partner in Eastern Europe reported downstream separation issues, rapid testing at our own site led to a subtle change in solvent wash sequences, which got written into new production instructions. In the long run, these tweaks foster trust and reduce troubleshooting for every user.

    As handling and regulatory requirements evolve, we’ve maintained close contacts with industry groups. This keeps us up to date with restrictions on certain solvents, permitted levels of residuals, and packaging requirements. We bring the latest compliance data straight into the plant, not just into paperwork, giving users fewer surprises at each compliance review and audit. Such engagement also gives us an early view on new applications, such as in niche intermediates or specialty coatings.

    Lessons Learned from Plant Floor to Laboratory

    Chemical manufacturing rarely follows a straight path from R&D to stable operations. Our production teams thrive on iterative problem-solving. Every plant shutdown, unexpected impurity, or customer support call offers a fresh glimpse into both chemistry and logistics. Over hundreds of batches, we’ve balanced raw material volatility and shipment delays, always with an eye on maintaining consistent product. This reliability doesn’t just support our business—it allows users to standardize their own output, winning their clients’ trust.

    Occasionally, new end-user specifications challenge us to shift usual process parameters. Last year, a growing pharmaceutical program required tighter control on specific impurity classes. Working in our own QC labs and reaching out to raw material vendors, we cut levels of targeted byproducts by switching up chlorination protocols, running extra purifications, and adding detailed release checks. These changes pushed throughput limits but resulted in a cleaner, more robust product profile—something users rely on when scaling new products or registering with regulators.

    Some producers see manufacturing and quality separately, but we’ve learned to integrate both—every plant decision gets validated with downstream test runs and analytical work. This connection to practical use ensures that incremental changes on the factory floor translate to long-term value for customers.

    Addressing Sustainability in Today’s Market

    Responsibly producing chlorinated intermediates raises challenges around effluent management and circularity of resources. We’ve wrestled with both regulatory changes and cost pressures, investing in state-of-the-art effluent treatment, energy-efficient reactors, and solvent recycle units at main production lines. These upgrades aren’t merely for appearance—they cut costs, limit long-term risk, and position us as a steady supplier even as environmental standards climb.

    Feedback from key customers—particularly those supplying into high-stick standards for pharmaceuticals or agrochemicals—guides further improvements. Certification audits have pushed us into greener sourcing and more robust documentation, ensuring each lot offers traceability back to raw input. In direct discussions, clients have voiced growing interest in lifecycle analysis, green chemistry inputs, and transparent reporting—trends that now shape both purchasing and production planning upstream.

    Next steps focus on leaner production and smarter inventory, limiting product age and surge risk for critical orders. We’re piloting data-driven monitoring to catch inconsistencies before they affect a shipment, strengthening the feedback loop between factory and end user. Shifting to sealed transfer lines, more advanced monitoring, and automated neutralization further limits site risk and supports operator safety, always under the guidance of hard-won plant experience.

    The Way Forward: Reliable Supply Based on Field Experience

    As the market for specialty intermediates grows, we’ve seen rising demand for documentation and hands-on support. No system can entirely anticipate the variety of field conditions, but direct ties to both R&D and operational teams keep us alert to practical needs. Sales representatives do more than take orders—they act as translators, bringing real end-user challenges back into plant discussion and prompting better answers than numbers on a specification sheet.

    With 5-Chloro-1,3-Benzodioxole, reliability builds on repetitive execution and on-the-ground engagement. Each batch brings new insights as we respond to evolving needs—sometimes as small as better labeling for improved tracking, other times as large as reformulating process architecture in response to new environmental guidance.

    In an era of shifting regulations, raw material uncertainty, and tighter just-in-time schedules, chemical users need partners willing to sweat the details from each stage of the process. Feedback continues to drive our improvements, supported by both operator diligence and ongoing dialogue with technical users. By building years of field-tested knowledge into every shipment, we hope to assure users that performance comes not just from what’s inside each drum, but from the hard lessons learned on our own production floor.