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3-Aminobenzoic Acid Hydrochloride

    • Product Name 3-Aminobenzoic Acid Hydrochloride
    • Alias m-Aminobenzoic acid hydrochloride
    • Einecs 219-057-1
    • 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

    571078

    Productname 3-Aminobenzoic Acid Hydrochloride
    Casnumber 4259-15-8
    Molecularformula C7H8ClNO2
    Molecularweight 173.60 g/mol
    Appearance White to off-white crystalline powder
    Meltingpoint 230-235°C (decomposes)
    Solubility Soluble in water
    Storagetemperature Store at room temperature
    Ph Acidic in aqueous solution
    Synonyms Meta-Aminobenzoic Acid Hydrochloride
    Purity Typically ≥98%
    Iupacname 3-Aminobenzoic acid hydrochloride

    As an accredited 3-Aminobenzoic Acid Hydrochloride factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 250g of 3-Aminobenzoic Acid Hydrochloride packaged in a sealed, amber glass bottle with tamper-evident cap and hazard labeling.
    Shipping 3-Aminobenzoic Acid Hydrochloride is shipped in tightly sealed containers to prevent moisture absorption and contamination. It should be transported in a cool, dry environment and handled with care as a chemical substance. Proper labeling and documentation are required to comply with safety regulations during transit.
    Storage 3-Aminobenzoic Acid Hydrochloride should be stored in a tightly closed container, in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers. Protect it from moisture and direct sunlight. Store at room temperature, ideally between 15–25°C (59–77°F). Keep the container properly labeled and away from sources of ignition or excessive heat.
    Application of 3-Aminobenzoic Acid Hydrochloride

    Applications of 3-Aminobenzoic Acid Hydrochloride in Industrial Manufacturing

    As a direct manufacturer with advanced batch synthesis and quality control technologies, we supply 3-Aminobenzoic Acid Hydrochloride for targeted applications in fine chemicals, pharmaceutical intermediates, specialty polymer additives, and advanced dye synthesis. Below are the most common industrial downstream sectors and their specific use profiles.

    1. Pharmaceutical Intermediate for Local Anesthetic APIs

    Pharmaceutical companies rely on 3-Aminobenzoic Acid Hydrochloride for the synthesis of certain local anesthetic active pharmaceutical ingredients. The amine group supports the amide bond formation through acylation reactions, a crucial step for producing intermediate structures leading to drugs such as procaine analogs. The hydrochloride salt offers improved solubility, controlled reactivity, and consistent purity required for cGMP process trains. Handling and quality specifications conform to international pharmacopoeial requirements, with careful documentation at each batch stage for traceability during regulatory review.

    Industry compliance standards

    • ICH Q7 GMP Guidelines
    • USP/NF/EP Monographs (where applicable to intermediates)
    • EDQM CEP documentation for process transparency
    • FDA 21 CFR Part 210/211 for intermediate control

    Typical usage ratio

    • 5–15% molar ratio as a key blocking agent or amidation reactant; actual proportion depends on the synthetic route and scale-up step optimization

    Downstream process integration

    • Product feeds into acylation or esterification stages in API synthesis within reactor systems
    • Material introduced after solvent exchange and catalyst loading
    • QC performed at receiving and in-process control points

    Final product types

    • Bulk pharmaceutical intermediates (e.g., para-aminobenzoic acid derivatives)
    • Finished local anesthetic formulations (post-downstream derivatization)
    • Sterile injectable precursors

    2. Intermediate for Azo Dye Synthesis

    Dye manufacturers use this compound as a diazotization substrate to produce specialty azo colorants for plastics, synthetic fibers, and specialty paper coatings. Its aromatic amino group reacts with nitrosating agents under acidic conditions to form stable diazonium salts, which then couple with various electron-rich aromatics. This targeted utility enables precise hue development and performance in end-use substrates with repeatable batch-to-batch color performance. Material purity and trace metals must meet color quality standards accepted by OEKO-TEX for textile-safe dye manufacture.

    Industry compliance standards

    • OEKO-TEX Standard 100 for dye purity and metal content in textile applications
    • EU REACH Annex XVII for azo colorants
    • ISO 9001:2015 quality management system certification
    • ZDHC MRSL conformance for advanced textile chemicals

    Typical usage ratio

    • 20–35% weight in the diazo component feed; adjusted for color depth, coupling partner activity, and desired pigment shade intensity

    Downstream process integration

    • Hydrochloride introduced into the diazotization vessel at sub-zero temperature
    • Controlled addition under agitation; in situ generation of diazonium salt
    • Immediate coupling with phenolic or aromatic substrates in alkaline phase

    Final product types

    • Synthetic azo textile dyes
    • High-performance pigments for plastics and specialty papers
    • Disperse dyes for PET fibers

    3. Building Block for Specialty Polymer Additives

    Producers supplying conductive or antistatic polymer formulations utilize this raw material as a functional group donor in the copolymerization or end-capping of polyamides and polyesters. Its aromatic amine functionality allows for tailored chain extension or branching, imparting enhanced compatibility or electrical properties in specialty engineering plastics. Commercial polymer processing relies on strictly controlled additive dosages and chain terminator introduction protocols, often as a salt for solid feed uniformity and minimized dusting.

    Industry compliance standards

    • ISO 9001:2015 for additive process control
    • UL 94 plastic combustion standard (downstream for end-use fire rating)
    • RoHS compliance for electronic-grade applications
    • REACH registration for polymer additives

    Typical usage ratio

    • 0.2–1.5% by weight based on the polymer resin batch; adjusted for antistatic effect or chain mobility modification

    Downstream process integration

    • Blended with base monomer in extruder-feed or melt-phase reactor system
    • Added during pre-polymerization to react prior to plastic pelletization
    • QC for amine content, melt flow modifications, and homogeneity

    Final product types

    • Antistatic polyamide films
    • Specialty polyester fibers for electronics
    • Statically dissipative engineering plastics
    • Conductive composite components

    4. Synthesis Intermediate for Benzoxazole Fluorescent Brighteners

    Manufacturers producing optical brighteners for paper, plastics, and textile applications rely on the reactive amine and carboxyl functionality to generate benzoxazole ring systems. The process involves condensation with polyhydroxy aromatic aldehydes under acidic conditions, followed by cyclization and purification. Consistent salt form input yields reproducible yields and high-purity intermediates, reducing downstream contamination and simplifying purification of light-brightening agents. Allocation of the hydrochloride form controls moisture uptake during storage and prevents premature hydrolysis before processing.

    Industry compliance standards

    • EN 71-3 (toy safety, chemical migration in paper/plastic)
    • FDA 21 CFR 176.170 for paper and paperboard in contact with aqueous and fatty foods
    • Kosher/Halal certification for paper and textile chemicals (on request)
    • REACH Annex IV/IX for specialty chemical intermediates

    Typical usage ratio

    • 10–25% by weight in the primary benzoxazole intermediate condensation feed; adjusted by molecular yield and target optical strength in the final brightener

    Downstream process integration

    • Raw material first dissolves in reaction medium with aldehyde and acid catalyst
    • Controlled heating and condensation for ring closure
    • Post-reaction neutralization, filtration, and intermediate isolation

    Final product types

    • Optical brighteners for coated paper
    • UV-bright plastic masterbatches
    • Laundry detergent brightener additives

    5. Intermediate for UV-Absorbing Coatings and Inks

    Specialty coatings and ink manufacturers use 3-Aminobenzoic Acid Hydrochloride as a core reactant for the synthesis of UV-absorbing compounds required in industrial and consumer coatings. Amine-carboxylic acid moieties enable the formation of complex aromatic ligands and absorber structures that incorporate stably into acrylate formulations or polyurethane dispersions. The hydrochloride form provides predictable dissolution rates, critical for reproducibility in high-shear ink reactors and high-solid content coating lines.

    Industry compliance standards

    • EN 71-3 for coatings in toys and children’s articles
    • FDA 21 CFR 175.300 for resinous and polymeric coatings in food contact
    • ASTM D7767 for UV-absorber content estimation
    • GMP for manufacturing in regulated applications

    Typical usage ratio

    • 3–10% by solids weight in initial UV-absorber or ligand-forming synthesis; finalized dosage in coatings controlled through UV absorbance titration

    Downstream process integration

    • Material charged into monomer reactor with core UV-absorber forming ingredients
    • Ensures even reactivity prior to polymerization initiation
    • Batch and in-line spectrophotometric QC to guide ink or coating blending

    Final product types

    • UV-resistant acrylic coatings for outdoor plastics
    • UV-stabilizer packages for industrial inks
    • Protective varnishes for electronics and automotive interiors
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    Certification & Compliance
    More Introduction

    3-Aminobenzoic Acid Hydrochloride: Insights from Our Plant Floor

    Direct Experience with 3-Aminobenzoic Acid Hydrochloride

    From the heart of our processing facility, 3-Aminobenzoic Acid Hydrochloride stands out on our production line, not just for its chemistry but for the practical roles it fills in research and manufacturing. Chemists use it as both a starting material and intermediate, seeing dependable behavior when introducing amino groups into aromatic systems. Across all our output, consistency drives choices. In day-to-day synthesis, reproducibility—batch after batch—proves crucial, and this grade delivers the uniform reactivity labs bank on.

    What Our Process Brings to the Table

    Our team understands 3-Aminobenzoic Acid Hydrochloride well enough to spot even minor deviations in color or flow during packaging or final drying. Decades back, isolating this compound forced cooling, filtration, or pH adjustments on the fly, but adjustments and tight controls on precipitation now guide us through each lot. Bang on-time monitoring and fast-acting decomposers give us the edge on impurities that may clog up downstream reactions or slow your throughput.

    The hydrochloride version gives us better solubility in water compared to its free acid. When a customer runs aqueous chemistry, especially for salt-form drugs or peptide linkages, this trait makes a real-world difference—less hassle in dissolution, easier handling, no need for further salt formation during use. Dust and clumping get minimalized because the hydrochloride form offers a less hygroscopic nature than some other amine salts.

    Specifications Shaped by Daily Practice

    The best specifications aren’t only about numbers on a sheet—they’re built from hands-on production. Our manufacturing batches meet stringent purity standards, with identification confirmed by melting point and both NMR and IR checks. Color must fall within a set range; moisture stays under tight control through vacuum drying and packaging from inert gas. Reliable solubility underpins every kilogram we offer.

    Particles must flow easily for lab-scale handling or automatic dispensers. Lumps are screened out after drying, and every order goes through both instrument analysis and direct physical assessment. Any deviation gets flagged—not by a machine alone, but by the trained eye of a technician who has seen poor lots before and knows the costly issues they can cause later in customers’ glassware or reactors.

    Differences Compared to Other Aminobenzoic Acids

    Several aminobenzoic acids exist. 3-Amino (meta) and 4-amino (para) versions get compared often. The 3-amino substitution leads to different reaction sites on the benzene ring, so for dye synthesis, polymer feedstocks, and pharmaceutical intermediates, reactivity diverges sharply. Some labs want the para isomer for its role in sunscreen chemistry or as a vitamin-building block. Our 3-amino variant aims at peptide applications or specialty intermediates—the molecular geometry influences coupling efficiency or enzyme response.

    Some users ask about switching between the free acid and hydrochloride salt. Free acid versions can be less stable in humid air and may dissolve poorly in neutral or basic solutions. The hydrochloride gives cationic character, which influences solubility and sometimes even cellular uptake in biological systems. In our facility, switching from free acid to its hydrochloride comes with careful acidification, monitoring heat release, and avoiding issues like over-salting or incomplete conversion.

    Few intermediates behave as predictably as our 3-Aminobenzoic Acid Hydrochloride. Labs that struggle with the para- or ortho-isomers’ solubility or separation switch back to us for simpler purification and proven batch-to-batch similarity.

    Everyday Use in Real-World Production

    We get feedback from customers running scale-ups for active pharmaceutical ingredients. Time and again, they mention the time saved by using a hydrochloride salt with robust stability, reducing the shakeups from clumping, stalling, or incomplete reactions. Water solubility and handling matter more than many realize—one customer flagged us for delivering quick-dissolving, free-flowing powder, which cut several minutes per reaction and, in scaled workflows, this adds up fast.

    On our end, we routinely check dissolving speeds in beakers and small reactors. Stirring, temperature, and granule size all factor into it. Our operators learned decades ago how critical dryness and particle regulation are—moisture can turn a high-purity batch into something that sticks to reactor walls or hangs in feed hoppers, disrupting continuous processing.

    The main application stays in pharmaceutical R&D, where the amine group becomes part of linkers or serves as a backbone for API precursors. Chemists preparing amide bonds, especially using peptide coupling reagents, demand the highest degree of purity because trace byproducts or salts compromise both yield and chromatography profiles. A side product at even half a percent gets flagged quickly in modern systems, so our protocols reflect a zero-compromise attitude.

    Our Standards and Real-World Feedback

    Quality control at our site means more than ticking off values on GC or HPLC runs. Every truckload of incoming raw material—benzoic acid, hydrazines, acids—goes through extra screening. Operators who load synthesis reactors cross-check each label, and samples hit the lab even before final packaging. We learned through previous incidents that cross-contamination can wreck entire batches down the line. This led to physical separation of product lines years ago; not every manufacturer makes this investment, but it matters for reproducibility.

    Whether customers run bench-scale research or larger custom manufacturing, tight reliability wins repeat business. Sacks might come in 25-kilo drums, but we fill research-scale bottles with the same vigilance. In this market, nobody wants a call-back for failed coupling or bad analytics in their end products. Our aim is to give labs confidence before they even weigh out their starting material.

    Labs at universities, pharmaceutical firms, or contract process lines depend on predictable behavior. Some tell us about poorly flowing powders from other sources—blocked pipettes, powder bridging, headaches for IT and QA teams tracking sources of failed analytical runs. Others mention the unpredictability of off-grade imports, leading to slowdowns in both pilot and full production. These lessons shape every lot we ship.

    Day-to-Day Challenges and Solutions in Manufacture

    Scaling up 3-Aminobenzoic Acid Hydrochloride comes with its share of hurdles. At larger volumes, heat management takes center stage. If you’ve ever seen a runaway reaction at the hydrochloride-forming step, you know cooling control is not optional. We invested early on in jacketed vessels and on-line probes. Slow acidification, staged additions, and keeping outlet pH within a half-point range keep the batch on target and protect against excessive byproduct formation.

    Powder transfer and storage throw other curves. This compound wants to hang onto water if stored in open air, so our design factors in nitrogen purging and moisture-impermeable linings on drums. Experience cut down product caking, which—if ignored—turns what should be a perfectly flowing powder into hard lumps. Handling protocols in our warehouse grew from repeated experience, not just theory; we saw real costs in the past from ignoring humidity swings.

    Bulk batches go through direct inspection. Technicians know how good product feels in scoops or flows into feeding stations. They spot an off-lot by subtle cues unenforceable in documents alone: color variation, texture, odor, or, on rare occasions, poor dissolution. Quality runs on a hands-on connection, not only results in analytical columns or certificate PDFs.

    Continuous Improvement: Incremental Yet Crucial

    Many customers only see the product after traveling from plant to warehouse to their benchtop. Behind that, we run constant improvement routines—mapping particle-size distribution, batch yields, heat profiles, and even the consistency of labeling, since even minor errors can cascade in tightly regulated industries. We adapt drying times with each season on our grounds, learning that monsoons or dry spells affect water content and drying curves. This goes beyond SOPs—it’s lived experience at every stage.

    Lab teams on our floor report even tiny variants, feeding lessons back to the next run. If a filtration step clogs or a crystallization throws off schedule, we tweak future runs. The most reliable purity and yield figures result from dozens of these micro-adjustments accumulated over years, supporting our role as a manufacturer rather than a repackager.

    Adjustments aren’t reserved for the chemists. Warehouse and shipping teams get involved directly. They recognize the flow required for high-throughput picks; their insight led to modifying drum lining and label placement so that glass fragments or shards—common in some packaging—never make it to the end user. These on-the-ground adjustments come from hands-on handling, not external audits alone.

    Safety Observations from Real Operations

    Although 3-Aminobenzoic Acid Hydrochloride is classed as a mild irritant, operations in our plant proceed with suitable controls. Gloves and goggles are standard, but lessons learned in early spills drove us to automated transfer whenever possible, keeping human contact at arm’s length. Standing orders reinforce local exhaust whenever station workers weigh or mix, and the effectiveness shows in low incident rates.

    Experience made a difference here—the smell, a weak but noticeable amine tang, serves as a built-in early warning. Air quality monitoring and feedback from shifts made us invest in local scrubbers and routine checks for even minor leaks. There’s no substitute for the vigilance of staff who’ve worked across decades and know how to spot a small issue before it becomes bigger.

    Why Choice of Supplier Impacts Your Results

    We recognize—through years of filling orders, supporting pilot trials, and fielding technical calls—that purchasing straight from a manufacturer means not just fresher supply, but direct accountability. In our view, only the original producer sits close enough to the process to troubleshoot, predict batch behavior, or modify future syntheses for specific performance. Distributors and brokers can relay messages but not replace the hands-on touch that comes with direct manufacture.

    Clients routinely share stories of batch variability from resellers: slow dissolving product, unexpected brown tints, or issues with customer service when things go south. They want the guarantee that what arrives in their lab comes straight from one line and not a mishmash of reblended leftovers. Our team builds trust not with marketing, but by running support direct from our plant floor—giving advice based on how we make and use this material daily.

    Long-Term Trends and Lessons Learned

    Over the past decade, we watched demand for amine-based aromatic intermediates evolve. Whereas decades ago, generic commodity supplies sufficed for most, today’s researchers and production teams expect traceability, rigorous regulatory documentation, and a manufacturer’s stamp. We see the regulatory climate driving tighter scrutiny on purity and provenance—a trend we’ve answered with more rigorous record-keeping, sample archiving, and open technical support. Our QA team handles audits, not just on paper, but on-site, walking third parties through every step from raw acid to final hydrochloride.

    Sustainability pressures push us to recover waste acid and reuse reaction waters. Unlike many, we monitor energy inputs closely, looking for heat recovery opportunities. Process changes that lower solvent use do not compromise product profile, which only comes from having hands inside every step. The pressure to reduce waste only sharpens our control over side reactions and yield ratios, since trimming excess saves both money and environmental penalty.

    Insights for Developers and Researchers

    3-Aminobenzoic Acid Hydrochloride fits, by design, into a variety of current synthetic needs. Labs looking for robust, reliable amine sources in aromatic construction value the meta placement's unique unlocking of new reaction space. In peptide coupling, purity makes or breaks yield; our own run-ins with chromatography ghosts underscore the need for zero-compromise manufacturing. Pharmaceutical teams, small molecule startups, and custom synthesis groups all share the same refrain—consistency and readiness beat surprises every time.

    The hydrochloride’s better water solubility bridges gaps for those dealing with complex, multistep protocols. The ability to introduce this material directly into aqueous systems speeds up steps for those avoiding laborious predissolution or extra conversion rounds. In peptide or conjugate chemistry, prompt handling translates to throughput speeds competitive firms depend on in ever-faster developmental cycles.

    Feedback from real users—their day-to-day struggles and improvements—drives us to keep refining. Every kilo we ship reflects lessons drawn from tanks, dryers, baggers, and above all, people—those on our floor and those working in demanding research. Direct contact with manufacturers like us strips away doubt about source, content, or handling, and gives end users an assurance piled high in years of steady delivery.

    Final Thought: Grounded in Practical Production

    3-Aminobenzoic Acid Hydrochloride’s value shines brightest under real-word conditions—sheds, labs, drums, and glassware. Each lot carries the touch of experienced hands and a commitment to real reliability, earned over time, not by chance. Teams needing dependable amine intermediates for synthesis find not just a chemical, but a seasoned partner, backed by direct manufacturing knowledge and decades of learning on the production line. Efficiency, predictability, and close oversight define every batch—and these fundamentals remain the foundation of our operation long past any single order or trend.