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HS Code |
736312 |
| Chemical Name | 4'-Chloroacetanilide |
| Cas Number | 539-03-7 |
| Molecular Formula | C8H8ClNO |
| Molecular Weight | 169.61 g/mol |
| Appearance | White to beige crystalline powder |
| Melting Point | 166-170 °C |
| Solubility | Slightly soluble in water; soluble in organic solvents such as ethanol and ether |
| Density | 1.27 g/cm³ |
| Synonyms | p-Chloroacetanilide; N-(4-Chlorophenyl)acetamide |
| Smiles | CC(=O)NC1=CC=C(C=C1)Cl |
| Purity | Typically ≥98% |
| Storage Conditions | Store in a cool, dry place, tightly closed |
As an accredited 4'-Chloroacetanilide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Brown glass bottle labeled “4'-Chloroacetanilide, 100g,” with hazard symbols, lot number, and tightly sealed screw cap for safety. |
| Shipping | 4'-Chloroacetanilide should be shipped in tightly sealed containers, protected from moisture and light. It must be handled as a hazardous chemical, using appropriate labeling and documentation. During transportation, ensure the package is secure and complies with relevant regulations for chemical substances to prevent leaks or accidental exposure. |
| Storage | 4'-Chloroacetanilide should be stored in a tightly closed container, in a cool, dry, well-ventilated area away from incompatible substances such as strong oxidizers. Protect the chemical from light and moisture. Ensure it is clearly labeled and placed in a designated chemical storage cabinet, preferably one suitable for organics. Always follow standard laboratory safety practices and local regulatory requirements. |
Applications of 4'-Chloroacetanilide in Industrial ManufacturingWe supply 4'-Chloroacetanilide to leading industrial manufacturers globally, supporting reliable downstream integration in high-volume sectors. Our expertise lies in ensuring material suitability for sector-specific requirements, offering precise formulation guidance and quality assurance that meets market and regulatory expectations at every step. 1. Herbicide Intermediate ProductionMajor agrochemical companies incorporate 4'-Chloroacetanilide as a key intermediate in the synthesis of selective herbicides, particularly in the chloroacetamide class, such as acetochlor and related derivatives. The raw material undergoes controlled condensation reactions during the multi-step herbicide synthesis, serving as the acylating agent that introduces the protected anilide moiety essential for herbicidal action. Formulation chemists modulate the addition rate based on reaction kinetics, strict assay requirements, and downstream purification efficiency, always considering both end-product selectivity and regulatory residue thresholds. Output from these processing lines enters the final blending, granulation, and micronization stages required for commercial agrochemical formulations. Industry compliance standards
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2. Pharmaceutical Intermediate SynthesisProducers use 4'-Chloroacetanilide in the multi-step synthesis of several active pharmaceutical ingredient (API) precursors, particularly where para-chlorinated anilide fragments are required. The material enters protected amidation steps to ensure regioselectivity in downstream coupling reactions, minimizing byproduct formation during scale-up. Stringent control of residual solvent and trace impurity levels remains essential to meet pharmacopeial benchmarks, with technicians adjusting input dosage based on reaction stoichiometry and hydrolysis profiles. Output proceeds to tailored deprotection, purification, and crystallization under GMP conditions ahead of further structural elaboration or direct API finishing. Industry compliance standards
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3. Dye and Pigment Intermediate ManufacturingSpecialty dye manufacturers utilize 4'-Chloroacetanilide to construct azo and anthraquinone dyes that demand high color strength and solvent resistance. This compound is applied in nucleophilic aromatic substitution or diazotization reactions, where its para-chloro functionality enables direct formation of stable chromophore precursors. Formulators optimize input weight and reaction duration to achieve consistent tinctorial properties, managing batch yields and process safety parameters closely. The resultant intermediates undergo sulfonation, coupling, or alkylation before final dye blending, filtration, and drying for application-specific pigment formulations. Industry compliance standards
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4. Rubber Chemical and Plastic Additive SynthesisProcessors in the rubber and plastics industries introduce 4'-Chloroacetanilide as a raw material during the synthesis of specialty polymer stabilizers and process aids. The compound participates in the production of antioxidant intermediates and UV stabilizers, particularly for applications in automotive elastomers and packaging films requiring tight color and performance tolerances. Engineers calibrate the charge amount based on the target additive loading and compatibility with polymerization catalysts, monitoring reaction efficiency and minimizing residual contaminants prior to compounding and extrusion operations. Industry compliance standards
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Manufacturing 4'-Chloroacetanilide means keeping sight of every step, from raw material handling to the crystallization and drying process. After decades of refining conditions and solvent systems, we have seen firsthand how small differences in production choices affect downstream users. Many people in the specialty chemical sector start with a comparison of technical sheets, but over the years, we’ve learned that the story of a compound often hides in its journey from raw material to finished product. We see differences arise not just in color and purity, but in granule structure, moisture content, and how the compound performs in actual applications. Those differences shape whether a batch finds its way into an agrochemical formulation, serves as an intermediate for dyes, or gets used in a research facility.
At our facility, every batch of 4'-Chloroacetanilide reflects a careful balance. Our standard model aims for a purity of at least 99%, measured by HPLC. Achieving this metric makes more sense than only following a check-box approach, since many customers depend on our product’s quality to maintain their own process stability. We have seen how impurities present at seemingly low levels can trigger inconsistent yields downstream or complicate purification steps. Several times, clients have returned for advice after facing batch variability from alternative sources, only to learn that consistent crystallization temperature control and solvent washing steps during our process prevent many of the issues they face elsewhere.
Water plays a surprising role in the story of 4'-Chloroacetanilide. Compounds held with less than 0.2% moisture content often store better, especially in warmer regions. In the past, when moisture checks slipped, we watched otherwise high-purity batches clump in storage or pick up fines, causing complications during blending or loading. Since then, our drying lines operate under strict environmental monitoring, with checks at each output stage. Any slip in moisture—a problem we have traced to summer humidity spikes—gets corrected before the product moves on.
Particle size distribution does not show up in every spec request, but from a manufacturing viewpoint, it matters greatly. Years ago, many batches got delivered meeting the chemical assay, but downstream blending and dispersion sometimes fell short of expectations. Filter plugging or dusting incidents prompted us to rethink our final grinding and sieving steps. Adjusting screen sizes or shifting mill speeds led to much tighter product control. Feedback from customers in pigment synthesis, especially, showed that fines reduced by as little as 1% accelerated overall process times while reducing solvent hold-up in filtration equipment. Unlike some imported grades that arrive with uneven lumps and dust, we target a middle-ground cut that works for both batch reactors and continuous blending.
In the early part of our operation, we handled several chlorinated acetanilide variants, and differences in melting points, stability, and by-product formation became obvious quickly. For example, compared to other mono-chlorinated acetanilides, our 4'-Chloroacetanilide produces a more stable reaction mass in phenyl-based coupling reactions. Technicians tell us that the ortho- and meta-chloro analogues can introduce more colored impurities, which leads to longer purification times for intermediates.
Comparisons with para-nitro and para-bromo acetanilides show more subtle lessons. Yields may look similar on paper, but we have learned that the chloro derivative often resists oxidative color changes over long storage much better than the nitro variety. Brominated compounds can offer alternative reactivity, yet storage and shipping become more problematic due to heavier regulatory restrictions and greater dust generation. Our manufacturing team has also pointed out that waste treatment for the chloro derivative produces a more manageable effluent load than for heavier halogenated acetanilides. These operational differences matter much more over the lifespan of a manufacturing partnership than any list of technical numbers.
Our regular orders reflect the broad reach of 4'-Chloroacetanilide. As a building block, it finds use in active ingredients for pre-emergent herbicides. We work with formulators who rely on its predictability, blending our compound into complex mixtures where even a small fluctuation in input quality can upend scale-up work. Our partners in the dye industry appreciate how the consistent physical properties of our batches translate to fewer filter blockages during diazotization or coupling steps. Years spent visiting customer plants have made it clear that uniform product granularity and purity lead to higher pigment strength and cleaner filtrates.
Research teams and custom synthesis shops also prefer our 4'-Chloroacetanilide when they require reliable yields in route development or pilot plant optimization. Other clients use our compound as a base intermediate for pharmaceuticals, where regulatory and analytical scrutiny reach a new level. Reliability at this level comes from more than a certificate of analysis; it comes from a shared commitment to rigorous analytical review and transparent traceability.
Environmental requirements shift constantly, often shaping not only how we make 4'-Chloroacetanilide, but how our customers use and dispose of it as well. Over the last decade, permitted effluent levels for hydrochloric acid by-products and organic residues have tightened in many regions. We responded with an updated series of neutralization tanks, using real-time pH feedback loops in place of batch-wise manual checks. We tightened our in-process solvent containment, since even minor fugitive emissions could trigger inspections or fines in sensitive districts.
Some regions flagged certain process intermediates as hazardous, so adjustments in synthetic sequence—for example, swapping aqueous work-up steps for safer alternatives—helped meet updated guidelines. We also developed a take-back program for some large industrial customers, allowing them to return off-spec or expired material for responsible disposal. These steps echo back to what we’ve found in talking with partners facing regulatory pressures themselves: everyone along the supply chain must adapt, or risk disruptions that ripple through to end users.
Global disruptions in raw material supplies—chlorinated anilines, acetic anhydride, specialty solvents—have occurred more often over the last few years than most of us care to remember. Each time, prices shifted and delivery schedules stretched. During those periods, some producers offered lower-priced batches with relaxed specifications, but we saw the outcome of this approach. Lower grades didn’t pass quality screens at downstream plants, leading to costly delays or waste generation. We now maintain a buffer stock policy for our own most critical feedstocks, with real-time linkages to regional suppliers that help us spot risk points before they become critical.
Our wholesale partners—especially those running continuous production—have commented that they prefer paying a modest premium to avoid the cycle of requalification and increased process monitoring. Short-term savings mean little in a tightly regulated production landscape. The most valuable lesson we share with newcomers is that robust traceability and local contingency planning do more to prevent lost business than chasing lowest-cost suppliers or swapping materials on short notice.
Years ago, quality assurance meant matching retention times and melting points. Today, we employ a wider suite of analytical tools: NMR checks on raw materials, LC-MS on finished lots for trace-level impurity screening, and routine GC checks for residual solvents. HPLC area normalization has become a standard part of batch release. This approach prevents unpleasant surprises in end-user plants, particularly for customers who run stricter process validation or who operate under FDA or EU pharmaceutical ingredient standards.
Our support doesn’t end at the factory gate. Several client teams check with us directly when new analytical methods or process issues come up—clogged nozzles during emulsifiable concentrate formulation, or unexpected interactions during scale-up of dye intermediates. Sending over an additional reference sample or running a bespoke assay is part of our regular technical partnership. Over time, these efforts have uncovered trends such as carrier resin incompatibilities, which once went undetected under routine QC standards. Open communication and a willingness to revisit checklists, together with knowledgeable staff, keep those relationships productive.
Inside our own plant, ensuring operator safety with 4'-Chloroacetanilide centers around exposure control, dust management, and regular training. Over the years, we watched how overlooked procedures led to isolated incidents—skin sensitization or dust inhalation—because an operator skipped PPE or underestimated the compound’s risks. In response, we upgraded dust extraction points across blending lines, and implemented lock-out protocols during cleaning and filter maintenance. Each month, we review near-miss logs and adjust procedures, drawing on actual events rather than relying solely on written guidelines.
Customers have their own specific requirements and challenges. Some request pre-packed sizes for safer handling in small-scale labs; others need anti-static packaging for high-throughput production. We adapt because we understand that safe handling outside our walls prevents downstream incidents and warranty claims. As local safety regulations shift, we watch for early warning signs—a sudden uptick in PPE requests or incoming questions about permissible exposure limits—so we stay ahead in planning both process and packaging adjustments.
Many companies can list technical specs, but direct manufacturing experience brings practical knowledge. Our teams learned that robust impurity control improves outcomes for both small-lot and wholesale users. Reliable sampling protocols and batch consignment tracking support faster incident response and clearer paper trails during audits. Active feedback from returning customers has sharpened how we identify process bottlenecks and drive improvements, both upstream and downstream of our own operations.
On the product front, what puts our version of 4'-Chloroacetanilide a step ahead is a tradition of hands-on troubleshooting. Whether helping a pigment producer optimize colorfastness or guiding a herbicide blender to improve dispersion, our advice grows from proven in-plant adjustments rather than only theoretical models. We find that this blend of technical insight and practical manufacturing discipline translates into fewer complaints, lower rework rates, and more repeat business.
We expect continued shifts in regulation, customer requirements, and market demand for chlorinated intermediates like 4'-Chloroacetanilide. Training the next generation to appreciate both technical and operational nuances remains a core part of our approach. Plant engineers, analytical chemists, and logistics teams devote time every quarter to review recent process incidents and customer feedback, always searching for patterns that signal evolving market needs.
Continuous process improvement drives us more than external targets. New solvent recovery systems, waste minimization processes, and fine-tuning of crystallization kinetics represent the fruits of that mindset. Each improvement, large or small, supports the operational integrity of those who rely on our products. As industries grow more interconnected, these behind-the-scenes investments make a difference that cannot be captured by surface-level comparisons. Our commitment to quality, safety, and transparency with 4'-Chloroacetanilide comes from real-world lessons—not just from documents and regulatory demands, but from decades of manufacturing experience shared by every member of our team.