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2,4-Dichlorophenol

    • Product Name 2,4-Dichlorophenol
    • Alias Dowicide 1
    • Einecs 204-428-0
    • 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

    831735

    name 2,4-Dichlorophenol
    chemical_formula C6H4Cl2O
    appearance White to light beige crystalline solid
    melting_point 41-43°C
    boiling_point 210-214°C
    density 1.39 g/cm3
    solubility_in_water 4.6 g/L at 25°C
    pKa 7.9
    CAS_number 120-83-2
    odor Strong, medicinal, phenolic odor
    flash_point 84°C (183°F)
    vapor_pressure 0.358 mmHg at 25°C
    logP 3.06
    UN_number 2811

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

    Packing & Storage
    Packing 250g of 2,4-Dichlorophenol is supplied in a sealed amber glass bottle with a hazard label and safety information.
    Shipping 2,4-Dichlorophenol is typically shipped in tightly sealed containers made of compatible material to prevent leakage or contamination. It should be stored and transported in a cool, well-ventilated area, away from ignition sources. Shipping must comply with all relevant hazardous material regulations, as the substance is classified as dangerous goods.
    Storage 2,4-Dichlorophenol should be stored in a tightly closed, labeled container in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers and bases. Keep it away from sources of ignition, heat, and direct sunlight. Store at ambient temperature, preferably in a corrosive-resistant storage cabinet designed for toxic chemicals, with secondary containment to prevent spills.
    Application of 2,4-Dichlorophenol

    Applications of 2,4-Dichlorophenol in Industrial Manufacturing

    2,4-Dichlorophenol serves as a critical intermediate in several high-value industrial processes. Its downstream applications span agrochemical synthesis, pharmaceutical intermediates, polymer additives, industrial biocides, and specialty dyes. In each sector, it meets strict quality criteria and integrates at specific stages to achieve desired end-product profiles.

    1. Agrochemical Synthesis: Herbicide Intermediate

    Large-scale agrochemical plants use 2,4-Dichlorophenol as a core precursor for synthesizing selective herbicides such as 2,4-D (2,4-dichlorophenoxyacetic acid) and MCPA. The compound enters early in the production train, undergoing controlled etherification and carboxylation steps. Manufacturers apply stringent batch control, solvent quality management, and reaction time optimization to assure downstream product consistency and regulatory compliance required by agricultural product markets.

    Industry compliance standards

    • European REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals)
    • U.S. EPA TSCA (Toxic Substances Control Act) compliance for pesticide precursor materials
    • ISO 9001:2015 certified manufacturing process
    • Global GAP and FAO/WHO Codex Alimentarius alignment for crop protection ingredients

    Typical usage ratio

    • For 2,4-D acid production: 2,4-dichlorophenol forms 60-70% of the molar input in the O-alkylation stage
    • Adjustment based on targeted purity of final herbicide molecule and efficiency of etherification yield, typically in 500-800 kg batch reactors

    Downstream process integration

    • Feeds directly into phenoxy acid synthesis lines as a controlled bulk input
    • Undergoes in situ alkylation, then carboxylation and purification
    • Subject to inline HPLC-based monitoring for residual starting material
    • Critical for controlling downstream impurity profiles

    Final product types

    • 2,4-D acid and 2,4-D salt formulations for pre- and post-emergence weed control
    • MCPA herbicidal active ingredient
    • Mixed phenoxy herbicide concentrates
    • Ready-to-use granular and liquid herbicide products

    2. Pharmaceutical Intermediate: Synthesis of Antiseptics and APIs

    Producers of off-patent antiseptics and active pharmaceutical ingredients (APIs) integrate 2,4-Dichlorophenol in specifically controlled synthesis protocols. The compound is frequently used in the multi-step production of chlorinated phenol derivatives, such as chlorhexidine, and related aromatic intermediates. Plant operations require rigid solvent recovery, impurity isolation, and process validation in line with international pharmacopeias and ICH Q7 GMP demands.

    Industry compliance standards

    • USP (United States Pharmacopeia) and EP (European Pharmacopoeia) monographs for downstream APIs
    • ICH Q7 guideline for active pharmaceutical ingredient manufacturing
    • 21 CFR Part 211 (U.S. cGMP for finished pharmaceuticals)
    • EDQM CEP (Certificate of Suitability) process integration

    Typical usage ratio

    • Utilized at 35-55% molar input relative to the aromatic ring count in target molecules
    • Ratios adapted to downstream chain length and required substitution pattern; validated per API route

    Downstream process integration

    • Charged into hydrogenation or halogenation reactors as a primary feedstock
    • Steps include controlled temperature chlorination and ring coupling
    • Follow-up purification and crystallization to pharmacopeial standards
    • Integrated QC sampling for trace chlorinated impurities

    Final product types

    • Chlorhexidine base and salts (antiseptics and disinfectants)
    • Multi-substituted phenol APIs for topical formulations
    • Aromatic pharmaceutical intermediates for further synthesis
    • Bulk sanitized ingredients for over-the-counter products

    3. Polymer Additives: Flame Retardant Precursors

    2,4-Dichlorophenol provides the building block for specialty brominated and chlorinated flame retardant additives used in engineering plastics and thermosets. Compounders and resin manufacturers perform controlled condensation and halogenation reactions, introducing the raw material in dedicated high-shear reactors. Downstream QC focuses on halogen content, residual phenol levels, and compatibility with base polymer matrices.

    Industry compliance standards

    • UL 94 plastics flammability rating conformity
    • RoHS (Restriction of Hazardous Substances) compliance for electrical/electronic goods
    • EN 14582:2007 (Determination of halogens in waste, solid, and liquid samples)
    • ISO 14001:2015 for environmental management in chemical processing

    Typical usage ratio

    • 2,4-Dichlorophenol makes up 15-30% of halogenated additive masterbatch by weight
    • Adjustment per resin compatibility and targeted V-0 or V-2 flame retardancy rating

    Downstream process integration

    • Introduced at the initial blending phase with aromatic monomers
    • Halogenation and condensation occur under controlled agitation and reactivity profiles
    • In-process waste streams are captured for halogen monitoring
    • Additive granulation follows for masterbatch production

    Final product types

    • Epoxy and polycarbonate flame retardant compounds
    • Engineering plastic pellets for automotive and electronic components
    • High-performance thermosetting laminates
    • Casting resins for circuit board insulation

    4. Industrial Biocides: Pulp, Paper, and Cooling Water Treatments

    Pulp mills, water treatment operators, and specialty chemical plants employ 2,4-Dichlorophenol in production of organochlorine and phenolic biocidal actives. Used in controlled synthesis of antimicrobials, the compound ensures broad-spectrum efficacy for industrial microbial control without compromising environmental discharge norms. Precise dosage, in-feed management, and downstream stabilization are central to formulation, especially for applications in water utilities and paper manufacturing.

    Industry compliance standards

    • OECD guidelines for testing of chemicals (section on biocides)
    • EPA FIFRA registration requirements for antimicrobial pesticide intermediates
    • EN 13623: Chemical disinfectants and antiseptics in industrial water systems
    • ISO 17025 laboratory accreditation for QC of biocidal batches

    Typical usage ratio

    • Represents 10-25% of antimicrobial precursor batch, depending on active ingredient synthesis design
    • Adjusted based on in situ conversion rates and targeted final biocide loading

    Downstream process integration

    • Dosed into initial biocide active synthesis reactors
    • Undergoes chlorination or oxidative coupling, followed by stabilization
    • Finished actives blended into formulated water treatment or paper additive concentrates
    • Continuous monitoring of residual chlorinated organics

    Final product types

    • Chemical biocides for cooling towers and closed water loops
    • Mildew-proofing additives in pulp and paper production
    • Fungicidal process chemicals for industrial equipment maintenance
    • Aqueous disinfectants for public utilities and industrial outfalls

    5. Specialty Dyes and Optical Brighteners: Chlorinated Phenol Intermediates

    Producers of specialty dyes, pigments, and optical brighteners require high-purity 2,4-Dichlorophenol for synthesis of chlorinated aromatic intermediates. It enters as a defined reactant during sulfonation, diazotization, and coupling reactions, supporting tight color hue and stability specifications for downstream applications. Monitoring for off-spec impurities, color strength, and overall product consistency forms the core of integration at this stage.

    Industry compliance standards

    • OEKO-TEX Standard 100 for dye and pigment safety
    • EN 71-3:2019 (migration of certain elements in consumer products)
    • REACH Annex XVII for azo dye restrictions
    • ISO 105-A02 for color fastness assessment

    Typical usage ratio

    • 15-40% by molar input in reaction mixtures for dye precursor manufacture
    • Ratio depends on target chromophore structure and hue intensity goals

    Downstream process integration

    • Introduced at the color base formation stage in batch dye synthesis
    • Subjected to controlled chlorination, followed by sulfonation or diazotization
    • Inline filtration and quality control for off-color residues
    • Converted to intermediate dispersions or powder concentrates

    Final product types

    • Sulfonated azo dyes and pigments for plastics or textiles
    • Chlorinated optical brighteners for paper and laundry sectors
    • Dye precursors for ink and paint manufacture
    • Special effect colorants for technical fibers and films
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    Certification & Compliance
    More Introduction

    2,4-Dichlorophenol: Reliability Begins with the First Crystal

    A Closer Look at 2,4-Dichlorophenol from a Manufacturer’s Bench

    Making 2,4-Dichlorophenol in our facility isn’t just chemistry—it’s about thoughtful process control and steady improvements learned from daily work. For years, each kilogram we pour reflects decisions rooted in our understanding of every step, from setup to drying. Our team deals with subtleties like batch heating rates and crystallization method—handling them directly means results stay consistent. We don’t outsource it. We don’t blend anonymous stocks. The 2,4-D we supply is truly our own, shaped by the decades of hands-on corrections and clear goals for purity and reliability.

    Building the Material, Not Just Selling It

    We make 2,4-Dichlorophenol starting with real-time temperature records and quality control at every stage. Our staff stand in the reaction bays, monitoring chlorination to make sure dichloro substitution lands where intended. Each lot gets assessed at multiple points, taking a sample before and after purification. The crystals you see at shipping didn’t appear by accident—they’re the result of careful attention to conditions such as cooling rates, acidity levels, and solvent choice. If something’s off, our technicians don’t leave it to chance; we get our hands dirty to fix it before the process runs any further.

    From Raw Material to Intermediate—The Practical Use Story

    Most requests for 2,4-Dichlorophenol come from companies making higher-value downstream products. This material serves as a reliable intermediate in various synthesis routes, especially in the manufacture of phenoxy herbicides, antiseptics, and some specialty polymers. Plants depending on a solid run can’t gamble on off-ratio blends or substandard lots. Our direct control means industry partners receive material that won’t disrupt their pipeline—whether the end use is herbicide, biocide, or a custom synthesis for a pharmaceutical project.

    Technical Profile Matters in the Real World

    We routinely produce 2,4-Dichlorophenol with 99.5% minimum GC purity, keeping contaminants below industry-accepted limits. Water content typically tests at less than 0.5%. Free-flowing white to off-white crystals characterize each bag, and we keep melting ranges tight—commonly 41 to 43°C, checked by calibrated instruments after each drying cycle. Density, bulk properties, and dustiness get tracked batch after batch; this makes packaging and transfer more manageable at the customer’s facilities. Achieving these marks isn’t luck—it comes from adjusting pH, solvent ratios, and filtration technique, day after day, by crews who know that a small slip can ripple through an entire supply chain.

    Model and Packaging—Tools to Meet Storage and Process Needs

    We offer a handful of packing sizes, mostly driven by what bulk users want. Twenty-five kilogram fiber drums are our staple. For customers running lab-scale or pilot work, smaller packs down to five kilograms exit our warehouse with the same care as larger drums. Inner liners and moisture-barrier bags protect the contents through long transits and humid conditions. Shipment labels clearly mark batch numbers, production dates, and QC status. Each lot ships with certificates for identification, purity, and moisture—the same data our in-house crew see. If there’s a problem during delivery or storage, it rarely surprises us; our packing designs grew out of customer feedback from years of handling and shipping under real-world conditions.

    Comparing Ours to Other Grades and Products

    2,4-Dichlorophenol sometimes gets mixed up with other chlorophenols such as 2,6-dichlorophenol, 4-chlorophenol, or pentachlorophenol. Not all grades suit the same purpose. We don’t blend across product lines. Our batches owe their consistency to tight control on precursor purity and batch record keeping. Unlike lower-grade materials or reprocessed waste stock, ours stands up to demanding synthesis protocols—chromatogram peaks don’t lie. Producers using our material rarely have to rework their process conditions; reaction times, yields, and product color sit within expected bands without major adjustments.

    Real-World Demands: Quality, Not Excuses

    There is a reason trusted manufacturers operate their own reactors and drying lines: traceability. In contrast, traders or secondary packagers can’t always speak for the material they move. We see cases where an off-grade lot sidetracks an entire plant’s schedule. When that happens, the headache falls on the operator, not on a spreadsheet. That’s why we don’t source material from outside or cut corners with recycled solvent. Instead, each lot from our facility leaves after direct sign-off by our shop supervisors. If something breaks down in production, we fix it before loading trucks or containerizing for export. In this way, our commitment is not theoretical or aspirational; it’s a product of real-time, hands-on routine.

    Process Experience, Not Just Product Data

    Few outside the chemical industry fully appreciate the grind involved in running a clean, repeatable batch process—one small tweak can make or break the outcome. Direct experience informs every modification we’ve made in our setup—swap a valve supplier, change agitator blade design, or reroute cooling water, and you will see a difference in the output. We rely on transparent log-keeping and operator training, because mistakes exposed by missed temperature holds or unfiltered feedstock show up in final purity and appearance. Some lessons are painful—lost days, product returns, excess waste—but over years, these shape our working practices. The result is a product we don’t just move out the door but stand behind.

    Why Downstream Users Value Predictability

    Ask anyone responsible for scaling up a synthesis in fine chemicals or crop protection—variation kills productivity. Even small inconsistencies in 2,4-Dichlorophenol purity bring side reactions or unwanted colors in the finished product. We track each parameter tightly, so customers spend less time troubleshooting or revalidating their own processes. Factories running high-throughput equipment need to know they can tip one of our drums into a reactor and hit the same curve as their last batch, week after week. Our focus on purity and batch-to-batch repeatability helps support those commitments—not because standards demand it, but because downtime and yield losses cost real money.

    Market Truths: Cost, Quality, and Supply Chain Control

    Raw material choices ripple through every supply chain. Plants want costs down, but not at the expense of traceability or safety. We have refined our flowsheets and reactor loads to make sure our cost stays competitive while refusing gray market shortcuts. Every bag of dichlorophenol travels directly from our reactors, not repack bins. If a drum arrives at a plant and doesn’t match the COA, we don’t ask a distributor to investigate—we check the actual shift sheets, spot-sample, and trace the lot ourselves. By keeping control in our own hands, we eliminate both finger pointing and unexpected surprises further downstream.

    Environmental and Safety Stewardship from the Shop Floor

    2,4-Dichlorophenol manufacturing brings the classic challenges seen in chlorinated aromatics. Waste minimization and air emission control run alongside vigilance for worker safety. Our crew fits fresh PPE every shift and logs potential exposure events in real time. Both spent acid from chlorination and byproduct residues are captured and treated at our on-site facilities—dumping or simple dilution never had a place here. We built closed-loop ventilation and solvent recovery after seeing early near-misses and emissions spikes. Some regulators set strict thresholds, but experience taught us to go beyond the minimum. Each improvement started with workers raising a red flag—not an auditor’s checklist. Our site team is familiar with both global best practices and the reality of boots on the ground.

    Learning from Failures, Not Just Publishing Successes

    Years in the business taught us tough lessons. One summer, a heat exchanger fouled mid-batch, reducing product purity and doubling rework. Clients couldn’t wait; we had to follow through and explain delays honestly. Another time, raw material drift—traced back to a small impurity in upstream chlorobenzene—led to an off-spec lot. As the manufacturer, we investigated every batch from the chemical input to drying pan, worked with our supplier to trace contaminants, and changed storage protocols. These episodes cost us money and reputation in the short term, but they informed our future controls. Today, each upgrade traces to a real-world problem, not a theoretical risk. We fix what breaks and don’t hide production shortcomings.

    Difference Between True Manufacturing and Resale

    It’s tempting for others to buy low-grade stock and repackage, advertising a familiar name. As real manufacturers, we recognize nuances between lots—the subtle color shift after a solvent change, the grain size variance with a slightly slower crystallization, and the odor profile indicating trace byproducts. A repackager can’t spot these issues; the tactile understanding of the product only comes from seeing, blending, filtering, and testing each batch at source. Customers notice the gap. Their engineers call us, searching for answers to issues not found in sales brochures: “Why did my yields drop?” or “What explains this off-smell?” Real accountability comes from the hands who made the product, not from a trader’s phone number.

    Collaboration and Customer Support

    Supplying 2,4-Dichlorophenol isn’t just putting drums on a truck and moving on. Our end-users have unique requirements, and our technical team often joins troubleshooting calls to discuss upstream filtration, reaction time shifts, or solvent compatibility. Years ago, we helped a coatings manufacturer resolve recurring filter blockages—tracing the trouble back to batch trace metals. Since then, joint batch review and feedback have improved not just our 2,4-D, but also the customer’s entire workflow. We value these conversations. They don’t interrupt production; they drive innovation. It’s through this process—sitting down, revisiting old COAs, comparing spectral data from past lots—that both sides grow.

    Handling Regulatory Scrutiny: Transparency at Every Step

    Markets shift and regulations evolve. Our shipments into heavily regulated markets—say, the EU or Japan—require more than paperwork. Inspectors don’t just review COAs or certificates; they want supporting batch records, operator logs, and environmental discharge summaries. Our team pulls this documentation directly from our internal systems. We answer every inquiry—whether it’s about impurity profiles, dioxin screening, or shipping compliance—as the original creator, not as a go-between. Our compliance rests on daily operating discipline, not just sticker labels. If local rules change, we adjust processes—sometimes overnight, retraining operators and revising SOPs—rather than playing catch-up after a citation arrives.

    Adaptation and Industry Trends

    In recent years, the landscape for chlorinated intermediates has shifted with tighter regulations and global supply chain uncertainty. Many large consumers reassess supplier relationships, looking for partners with both security of supply and an open attitude toward innovation. We see customers asking about expanded capacity, alternate grades, and real-time access to test results. Our response pulls from experience: we invest in tank space for critical raw materials, keep in touch with changing environmental targets, and experiment with green chemistry solutions when they fit the process. Not every experiment succeeds, but every one teaches us where our product fits in tomorrow’s industry.

    The Core Difference: Knowledge That Stays on Site

    Manufacturing 2,4-Dichlorophenol means knowing your own equipment, knowing your own materials, and cultivating a crew that solves problems at source. We trust our people’s eyes and hands—when a shift supervisor says something feels off, we listen. That culture can’t be bought or borrowed; it grows batch after batch, rooted in pride for what leaves the plant. Each drum is a signature, proof that all safeguards and checks worked as intended. This is why our partners keep calling, project after project—they count on our craft, not a faceless supply chain.

    Looking Ahead: Demanding Better with Every Batch

    We hold ourselves to steady progress. Through incremental improvement—better wash protocols, updated lab methods, smarter solvent recycling—we reduce contaminants and increase yield. None of this happens behind a desk. Progress involves overtime, operator retraining, and listening to customer complaints with humility. Each bag of 2,4-Dichlorophenol should meet today’s standards, not yesterday’s. Our commitment to this chemical isn’t abstract—it’s visible in the clean batch sheets, the clear crystals in our packaging, and the calls our technical team answer long after shipment.

    Standing By Our Product, Every Day

    We take pride that customers can trace their outcomes—good or bad—to what comes from our reactors. There’s no mystery, no layers, no excuses. Real-world quality starts on our shop floor, not at a broker’s computer. We know our 2,4-Dichlorophenol because we built it ourselves from start to finish. Each day brings new questions, challenges, and improvements. That’s the value of manufacturing you can witness and verify—straightforward, dependable, and never anonymous.