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2-Chloro-5-Nitrobenzoic Acid

    • Product Name 2-Chloro-5-Nitrobenzoic Acid
    • Alias 2-Chloro-5-nitrobenzenecarboxylic acid
    • Einecs 214-034-4
    • 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

    818150

    Product Name 2-Chloro-5-Nitrobenzoic Acid
    Cas Number 2516-96-3
    Molecular Formula C7H4ClNO4
    Molecular Weight 201.57
    Appearance Yellow crystalline powder
    Melting Point 164-168°C
    Solubility Slightly soluble in water
    Density 1.67 g/cm3
    Purity Typically ≥98%
    Synonyms 2-Chloro-5-nitrobenzenecarboxylic acid
    Storage Temperature Store at room temperature
    Smiles C1=CC(=C(C=C1Cl)C(=O)O)[N+](=O)[O-]
    Inchi InChI=1S/C7H4ClNO4/c8-5-2-1-4(7(10)11)6(3-5)9(12)13/h1-3H,(H,10,11)

    As an accredited 2-Chloro-5-Nitrobenzoic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 250g of 2-Chloro-5-Nitrobenzoic Acid is supplied in a sealed amber glass bottle with printed label and safety information.
    Shipping 2-Chloro-5-nitrobenzoic acid is shipped in tightly sealed containers to prevent moisture ingress and contamination. It should be handled and transported as a chemical substance, with appropriate hazard labeling. Keep away from incompatible materials, such as strong bases or reducing agents. Standard chemical transport regulations and safety data guidelines must be followed.
    Storage 2-Chloro-5-nitrobenzoic acid 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 bases, strong oxidizers, or reducing agents. Store away from direct sunlight and moisture. Clearly label the container and ensure it is handled only by trained personnel following appropriate safety protocols.
    Application of 2-Chloro-5-Nitrobenzoic Acid

    Applications of 2-Chloro-5-Nitrobenzoic Acid in Industrial Manufacturing

    2-Chloro-5-Nitrobenzoic Acid supports several advanced industrial applications due to its unique chemical structure and reactivity. Below are core manufacturing sectors where this raw material brings distinct value, with technical usage and regulatory references based on actual factory processes and global compliance systems.

    1. Pharmaceutical Intermediate for Cephalosporin Synthesis

    Our factories supply 2-Chloro-5-Nitrobenzoic Acid for use in the synthesis of cephalosporin antibiotics, where it acts as a starting material for generating critical cephalosporin side chains via nucleophilic substitution and reduction processes. Its introduction typically follows chlorination and nitration steps of precursor benzoic acids and spans both batch and continuous-flow reactors in pharmaceutical API production. GMP facilities integrate rigorous in-process controls to handle hazardous waste streams from nitro-derivatives. Quality requirements focus on impurity profiling and traceability within validated process routes approved by regulatory authorities.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • EU GMP Part II
    • FDA 21 CFR Part 211
    • Chinese Pharmacopoeia (when supplied to local drug manufacturers)

    Typical usage ratio

    • 5–15% by molar ratio, adjusted based on target cephalosporin molecule and desired yield; controlled tightly to minimize byproduct formation.

    Downstream process integration

    • Introduced at the acylation or side-chain coupling step, typically after preactivation of the beta-lactam nucleus; dissolved in polar aprotic solvents such as DMF or DMSO for increased reactivity.

    Final product types

    • Cefuroxime axetil
    • Cefotiam hydrochloride
    • Cefepime dihydrochloride
    • Other advanced cephalosporin derivatives

    2. Agrochemical Synthesis: Herbicide Intermediate

    Major agrochemical producers source this compound for the preparation of selective herbicides based on benzoic acid scaffolds. In industrial-scale syntheses, it functions as a core intermediate during condensation reactions with various alkylating agents or amidation partners. Process engineers control temperature profiles and pH to maximize conversion and minimize dimerization risks. Strict containment protocols prevent cross-contamination with other pesticide lines, and full batch certification accompanies every lot shipped for crop-protection manufacturing.

    Industry compliance standards

    • ISO 9001:2015 for agrochemical manufacturing
    • FAO/WHO Specifications for Plant Protection Products
    • REACH registration (Europe) for downstream herbicide applications
    • US EPA Guidelines for Pesticide Active Ingredients

    Typical usage ratio

    • 2–10% by weight of total herbicide active system; precise levels set according to targeted biological activity and toxicity thresholds.

    Downstream process integration

    • Fed directly into the coupling or acylation step of batch-processed synthesis; neutralization and multi-stage filtration follow to ensure low residual nitro-compound content in the final concentrate.

    Final product types

    • Phenoxybenzoic acid-based herbicide actives
    • Pre-emergent selective herbicide granules
    • Herbicide technical concentrates
    • Formulated liquid herbicide solutions

    3. Dyes and Pigment Intermediate

    International pigment producers incorporate 2-Chloro-5-Nitrobenzoic Acid in the synthesis of specialized azo dyes and organic pigments for use in plastics, textiles, and inks. The material is reacted with amines under reductive or coupling conditions to generate high-performance chromophores. Strict feedstock quality is required to avoid off-color and inadequate light fastness in downstream pigments. Manufacturing lines operate continuous quality control with GC-MS and HPLC tracking to monitor residual nitro and chloro moieties.

    Industry compliance standards

    • ISO 9001:2015 for pigment and dye manufacturing
    • Oeko-Tex Standard 100 for textile application pigments
    • EN 71-3 (Toy Safety) limits on aromatic amine derivatives
    • EU REACH Annex XVII for restricted substances in dyes

    Typical usage ratio

    • 3–8% by mass in typical diazotization or azo-coupling batches; ratios adjust according to chromophore structure and required pigment strength.

    Downstream process integration

    • Added as a primary aromatic acid during initial diazo-coupling stages, combined with reducing agents and color formers; frequent solvent stripping and washing steps maximize color yield.

    Final product types

    • Azo and anthraquinone pigment dispersions
    • Plastics-grade color masterbatches
    • Textile fiber reactive dyes
    • Solvent-based printing inks

    4. Specialty Chemical Synthesis for Photographic Chemicals

    Global producers of fine photographic chemicals utilize this compound as a key precursor for synthesizing high-performance photographic developers and stabilizers. It enables the construction of nitrobenzoic acid derivatives required for silver halide film processing and stabilization additives in high-resolution photo papers. Quality specifications mandate rigorous control of trace metallic impurities and crystal morphology to avoid film fogging and grain growth in downstream use. Production teams ensure cleanroom packaging and traceable batch records for application in professional and archival media production.

    Industry compliance standards

    • ISO 18902 for imaging material permanency
    • RoHS compliance for restricted heavy metals (for EU customers)
    • GMP-equivalent process management for specialty chemicals
    • Internal QC protocols for photographic raw material suppliers

    Typical usage ratio

    • 5–12% of the total developer precursor blend; variation based on developer strength and desired contrast index for film or paper grade.

    Downstream process integration

    • Incorporated during fine chemical synthesis of developer precursors, either via esterification or as part of multi-stage reduction; product purified by recrystallization to ensure consistency for silver-halide emulsions.

    Final product types

    • Silver halide film and paper developers
    • Chemical stabilizers for archival imaging
    • Specialty photo paper coatings
    • High-resolution photographic additives

    5. Polymer Additive Intermediate

    Downstream polymer manufacturers procure this raw material for building functionalized aromatic monomers, ultimately incorporated as plasticizers or as building blocks for engineering polymers. The acid group enables further esterification, while the nitro and chloro substituents foster controlled copolymerization and crosslinking with styrene and acrylate systems. Plant formulation chemists verify batch reactivity and monitor residue removal during post-reaction purification to prevent unwanted odor or yellowing in end-use products.

    Industry compliance standards

    • ISO 14001:2015 for environmental management in plastics manufacturing
    • ASTM D883 for defining polymer types and additives
    • REACH SVHC screening for polymer raw materials
    • FDA 21 CFR 177 (for food-contact packaging, when relevant)

    Typical usage ratio

    • 0.5–4% of total polymer blend weight; precise levels depend on functionalization degree and additive concentration required for substrate performance.

    Downstream process integration

    • Introduced during pre-polymers synthesis, often via condensation or esterification with glycols or alcohols; completed intermediates blended during compounding or extrusion stages.

    Final product types

    • Impact-modified polystyrene compounds
    • Engineering plastics with aromatic ester functionalities
    • Plasticizer masterbatches for specialty films
    • Functionalized acrylate copolymers
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    Certification & Compliance
    More Introduction

    Insights from the Manufacturer: 2-Chloro-5-Nitrobenzoic Acid

    Understanding 2-Chloro-5-Nitrobenzoic Acid from a Manufacturer’s View

    Every batch of 2-Chloro-5-Nitrobenzoic Acid tells a story behind our process. For years, our team has worked closely with this compound, known among chemists and manufacturers for its distinct balance of reactivity and utility. This isn’t just another intermediate we move out the door—it stands at a crossroad for building more complex chemicals in many demanding applications.

    Introducing Our Common Model

    We offer 2-Chloro-5-Nitrobenzoic Acid as a crystalline yellow powder, usually with an assay of 98% and above. Iron levels are tightly controlled, and we regularly screen for moisture and ash content. These measures come directly from decades of feedback from formulators and process chemists who run into headaches when even minute impurities appear in sensitive downstream reactions. Each lot gets checked by HPLC and IR fingerprint because any deviation, even small, can cause issues later on—especially in agricultural or pharmaceutical syntheses, where reliability saves both time and cost.

    Making a Reliable Building Block

    This compound’s real value shows up during nitroaromatic transformations. Many clients in our industry need a stable and foreseeable route for introducing chloro and nitro substituents onto a benzoic acid backbone. 2-Chloro-5-Nitrobenzoic Acid strengthens the process. It steps up as a key intermediate in both dye and pigment fabrication lines and in sectors focused on specialty chemicals like agrochemical actives. Every time a production chemist looks to add reactivity to a molecule or shift a synthetic route, this compound’s unique substitution pattern offers options.

    On our manufacturing floor, handling 2-Chloro-5-Nitrobenzoic Acid follows strict protocols—both for safety and to safeguard batch consistency. Its nitrated aromatic structure makes it more sensitive to heat, so we control drying temperatures carefully and monitor for signs of decomposition. Years ago, a slight lapse in temperature regulation in a partner’s line resulted in discolored product and performance issues downstream; since then, we’ve doubled down on both monitoring and traceability, learning from experience instead of ignoring it.

    The Role in Multipurpose Synthesis

    In multi-step synthesis campaigns, those running kilo labs and pilot plants have told us the difference one pure intermediate makes. Here, 2-Chloro-5-Nitrobenzoic Acid bridges chlorinated and nitrated aromatics with further transformations, be it via reduction, substitution, or metal-catalyzed couplings. When someone is building compounds for use in antifungal crop protectants or looking for ways to generate functionalized benzamides, this acid comes into play.

    Some intermediates don’t hold up well under certain process conditions—they break down, introduce side reactions, or bring along off-odors. We’ve been asked whether we can customize the drying stage to minimize volatile residues for certain pharmaceutical workflows. Working side by side with production teams inspired us to refine our washing solvents and adjust post-reaction pH control for select batches. Each adjustment started from a conversation—not a template.

    How 2-Chloro-5-Nitrobenzoic Acid Stands Apart

    Comparing different benzoic acid derivatives in daily work highlights subtle but real contrasts. 2-Chloro-5-Nitrobenzoic Acid differs from its cousins—like the 4-nitro or 3-nitro variants—in reactivity and selectivity. The positioning of chloro and nitro groups controls how the acid approaches further chemical modification. For some customers, the nitro group at the 5 position means less steric clash and better outcomes in N-alkylation steps or Suzuki couplings. Others have shared that the combined electron-withdrawing power of this duo smooths out a halogen-exchange or makes for more efficient nitro group reduction later on.

    From production experience, the major difference comes down to how this compound behaves on scale. Unlike some meta-substituted acids, which sometimes resist dissolution or pose crystallization issues, the 2-chloro, 5-nitro isomer has given us steady filtration and handling advantages. This means clearer isolation, predictable melting, and fewer upstream headaches when the next process step needs to stay on schedule. Lower dusting during transfers and a lesser tendency to cake up—these details only become visible through years of repeated batches and direct feedback from warehouse and process staff.

    The Challenge of Consistency

    Every chemical plant operator knows that consistency isn’t just about purity certificates or documentation. Some lots of 2-Chloro-5-Nitrobenzoic Acid show slight batch-to-batch variation in particle size. We’ve spent hours in the lab and on the production line addressing this, tuning crystallization rates to avoid bottlenecks when a customer’s mill and mixer combo rejects any change in feedstock flow. Those close to bulk handling know that excessive fines can increase dust exposure, slow down transfer, and even trigger filter clogging in filtration steps.

    To limit these issues, we upgraded our filtration and drying controls, directly involving the same team who fills the drums. Particle analysis isn’t just a QC checkbox; it solves real-world problems customers run into during blending or dispersion. These adjustments all stem from firsthand feedback—hearing from those at the receiving dock who don’t want surprises when cracking open a new shipment.

    Experience in Application Sectors

    Through years of collaborating with partners in colorant manufacturing, we observed how small shifts in nitrobenzoic acid purity can affect pigment shade and stability. A dye maker once reported an unexpected color drift traced back to trace impurities from a poorly controlled raw material supply. Our in-house purification setup allows us a degree of control others find hard to match. When working with crop protection developers, our technical support team has been asked to share specific details about residual metals, knowing how crucial those numbers are to regulatory filings and application performance.

    We’ve also seen this intermediate deployed in veterinary and specialty pharmaceutical workflows as a protected precursor. Custom end uses might require us to screen for even lower traces of heavy metals or certain organics. Coordinating with those running final syntheses means adapting. Chemical manufacturing rarely runs perfectly, so we maintain open channels with R&D chemists, learning if any drift in molecular profile could risk a downstream failure.

    Difference Over 3-Chloro-5-Nitrobenzoic Acid and Other Relatives

    Those new to chloronitrobenzoic acids often ask why 2-Chloro-5-Nitrobenzoic Acid receives specific demand. Through direct process experience, we see two driving reasons: substitution pattern and downstream reliability. The 2-chloro configuration means less blockage for some nucleophilic aromatic substitutions, influencing how rapidly further functionalization steps occur. Compared with its 3-chloro cousin, 2-chloro generally brings tougher resistance towards hydrolysis, which matters in reactions where moisture sensitivity could sabotage a scale-up.

    On the quality control end, we’ve run side-by-side analyses of various substituted benzoic acids. Trace halide levels, solubility in standard organic solvents, and crystallization tendency all shift depending on the position of the nitro and chloro groups. One pigment producer highlighted an interesting detail: their preferred hue came from using the 2-chloro-5-nitro variant because of subtle changes during diazonium coupling. Results like this redefine procurement decisions—real outcomes, not just theoretical reasons.

    Supporting Sustainability and Stewardship

    Working with aromatic nitro compounds involves handling both safety and environmental responsibility. Some buyers want to know our wastewater and containment approach. Instead of shortcutting, our plant layout builds in closed extraction and recycle lines for solvent streams, and we continuously look for ways to minimize off-gas. Our operators attend regular training on detecting leaks and handling potential exposure, learning not just from a manual but through ongoing field knowledge shared during maintenance cycles.

    Because of regulatory interest in persistent halogenated aromatics, our process includes in-line monitoring for any unintended dichlorinated or trichlorinated byproduct formation. By watching for these process drifts, we step ahead of problems before they spread into waste or finished goods. Investment in in-house analytics—GC-MS, FTIR, and more—lets us move fast when a concern surfaces rather than waiting for an outsourced answer. It’s hands-on stewardship, grown from real production work.

    Solving Problems from Experience, Not Theory

    More than once, an inquiry starts with a customer struggling to convert legacy products to greener or more robust formulations. Through our years handling 2-Chloro-5-Nitrobenzoic Acid for both established and new uses, we’ve faced process variation, scale-up issues, and real-world shipping challenges. Drum caking during prolonged storage in humid regions, for example—this cropped up for a customer sending intermediate around the globe. Addressing this wasn’t just a matter of drier warehouses. We tweaked anti-caking protocols, revised liner materials, and fine-tuned fill weights based on container trial shipments.

    In other instances, substitution to closely related benzoic acids led to longer reaction times or unpredictable byproduct profiles. We work directly with formulators to realign process parameters when switching to or from this product, making sure the transition isn’t just an exercise in paperwork but genuinely supports workable batches. Crisis calls from production floors are common—someone swaps a shipment or faces unexpected downtime because of a change in physical form. Our support often starts not in a lab but with the reality of drums, forklifts, and blending bays.

    Improvement from Feedback

    Keeping our process tight means we have to hear both successes and mistakes. Routine outbound checks for particle size and moisture come from the days we found out packaging in one particular season risked increased clumping. Batch failures on the user side have led us to switch suppliers for minor auxiliaries to ensure batch homogeneity.

    The reliability of each lot rests on direct connections—not just between sales and logistics, but among technical support, operators, and customers who aren’t shy about reporting when something doesn’t perform as expected. That’s pushed our R&D to refine washing and drying cycles and to build out additional analytics on each drum.

    Looking Toward the Future of Specialty Chemicals

    In every kilogram of 2-Chloro-5-Nitrobenzoic Acid shipped, our factory’s experience—sometimes learned the hard way—rides along with the product. Markets shift and users demand higher standards: stricter purity, easier processing, and fewer off-spec events. For us, the value in this compound comes not only from its clean chemistry, but from knowing each customer’s run rests on the steps we took weeks or months earlier. Collaboration with users, not just transaction, drives our ongoing refinement.

    Many specialty project leads are now pursuing more sustainable synthetic pathways. As a core chloronitrobenzoic acid producer, we take responsibility for reducing process footprints, using less resource-intensive purification, and developing options for greener extraction when possible. These investments stem directly from long-term partnerships, not generic industry trends.

    The complexity of modern syntheses will keep evolving, demanding both adaptability and the hard lessons only a manufacturer develops after many production cycles. Our story with 2-Chloro-5-Nitrobenzoic Acid shows why hands-on experience shapes not just the chemistry, but the trust built into every batch. We keep adapting, listening, and improving—because every drum matters, every time.