Shandong Acid Technology Co., Ltd
+8615365186327 sales3@liwei-chem.com

Oxalic Acid 99.6%

    • Product Name: Oxalic Acid 99.6%
    • Chemical Name (IUPAC): ethanedioic acid
    • CAS No.: 144-62-7
    • Chemical Formula: C2H2O4
    • Form/Physical State: White crystalline solid
    • Factroy Site: No. 1, Feicheng Chemical Industry Park, Shiheng Town, Feicheng City, Tai'an City, Shandong Province
    • Price Inquiry: sales3@liwei-chem.com
    • Manufacturer: Shandong Acid Technology Co., Ltd
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    Specifications

    HS Code

    474587

    Chemical Name Oxalic Acid
    Purity 99.6%
    Chemical Formula C2H2O4
    Molecular Weight 90.03 g/mol
    Appearance White crystalline solid
    Melting Point 189 to 191 °C (372 to 376 °F)
    Solubility In Water Very soluble
    Density 1.9 g/cm³
    Odor Odorless
    Ph 1.3 (0.1 M solution)
    Boiling Point Decomposes before boiling
    Cas Number 144-62-7

    As an accredited Oxalic Acid 99.6% factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Oxalic Acid 99.6%, 500g, packed in a sealed, sturdy white plastic jar with a secure screw cap and clear labeling.
    Container Loading (20′ FCL) 20′ FCL typically loads 22 metric tons oxalic acid 99.6% packed in 50kg bags, totaling 440 bags, safely containerized.
    Shipping Oxalic Acid 99.6% is shipped in tightly sealed, corrosion-resistant containers to prevent moisture absorption and contamination. The packaging complies with hazardous material regulations, ensuring safe transport. Containers are clearly labeled and handled with care, with shipping documentation specifying the chemical’s classification, potential hazards, and appropriate emergency procedures.
    Storage Oxalic Acid 99.6% should be stored in a cool, dry, well-ventilated area, away from moisture, heat, and direct sunlight. Keep it tightly sealed in a corrosion-resistant container. Segregate from incompatible substances such as alkalis, oxidizing agents, and metals. Ensure proper labeling and access to spill containment materials. Use secondary containment and store at room temperature to prevent degradation.
    Shelf Life Oxalic Acid 99.6% typically has a shelf life of 3 years when stored in a cool, dry, and well-sealed container.
    Application of Oxalic Acid 99.6%

    Purity 99.6%: Oxalic Acid 99.6% with high purity is used in metal surface treatment, where it ensures effective rust and scale removal.

    Molecular Weight 90.03 g/mol: Oxalic Acid 99.6% with a molecular weight of 90.03 g/mol is used in rare earth element extraction, where it facilitates high-yield precipitation of metal oxalates.

    Melting Point 189–191 °C: Oxalic Acid 99.6% with a melting point of 189–191 °C is used in chemical synthesis, where it provides consistent thermal stability during reactions.

    Particle Size < 100 μm: Oxalic Acid 99.6% with particle size less than 100 μm is used in pharmaceutical intermediates manufacturing, where it enables rapid dissolution and precise dosing.

    Stability Temperature up to 140 °C: Oxalic Acid 99.6% with stability temperature up to 140 °C is used in dyeing and bleaching processes, where it maintains chemical integrity for consistent color results.

    Solubility 95 g/L at 20 °C: Oxalic Acid 99.6% with solubility of 95 g/L at 20 °C is used in laboratory reagent preparation, where it ensures fast and complete dissolution.

    pH (1% solution) 1.2–1.5: Oxalic Acid 99.6% with a pH of 1.2–1.5 in 1% solution is used in cleaning formulations, where it provides strong acidic conditions for efficient descaling.

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    Certification & Compliance
    More Introduction

    Oxalic Acid 99.6%: Experience from the Manufacturer’s Bench

    Understanding Oxalic Acid 99.6% from the Ground Up

    Every batch of Oxalic Acid 99.6% that leaves our facility has a story rooted in years of process know-how. We do not just produce chemicals in bulk—we build consistency, particle by particle. The 99.6% designation marks a level of purity checked daily by our own QC labs, shaped by a focus on what reliability means for real users. In our plant, the material emerges as a fine crystalline powder that dissolves quickly in water, a detail that means quicker reactions and predictable results in both large-scale applications and smaller specialty processes.

    Where Craft Meets Chemistry: Model and Specifications

    The physical form of oxalic acid can make a surprising difference in industrial use. We have refined our process to offer a crystalline product that flows easily, avoids caking, and resists airborne dust during handling. Thanks to a multi-stage filtration and recrystallization process, the acid crystals are bright, white, and uniform—no off-spec fines to clog dosing pumps, no guesswork in day-to-day operation. Purity checks run throughout the process—each drum ships with a guaranteed content that never falls below 99.6%. Moisture, ferrous contamination, and insoluble residue are held tightly below industry-leading targets, because every part per million matters. Operators keep records. We know failure points. Even “invisible” contaminants can skew the downstream chemistry, so each drum represents careful selection, not just what the market asks for, but what the end process actually needs.

    Using Oxalic Acid 99.6%: The Manufacturer’s Perspective

    From metal finishing to rare earth extraction, tales from the factory floor keep shaping how we engineer each lot. In a metal cleaning operation, for example, oxalic acid attacks rust through chelation. Lesser grades can leave pits, cause unpredictable etching, or even worsen passivation by acting unevenly on the substrate. We hear from plating shops using our high-purity grade: the uniform dissolution translates directly to fewer rejects and more reproducible mirror finishes. In textile production, the difference between “nearly pure” and 99.6% plays out in dye uptake and fabric strength. Chemical residues from lower grade acids interfere with dye chemicals and weaken the fibers, sometimes in unpredictable ways. Repeated feedstock issues drove mills to demand greater traceability—every ton from our line comes with documented origins and processing records. Workers doing marble cleaning or restoration work often tell us how materials from “mixed origin” suppliers left stains behind, chalked up to iron or other trace metals. Our focus on maximum purity helps protect these high-value surfaces, keeping the finishes free of brown or yellow scars that end up costing days of remedial work.

    Real-World Applications: Bringing Chemistry to Life

    Oxalic acid at 99.6% is made for chemistries that can’t afford uncertainty. Electroplating lines rely on consistent acidity for bright, even finishes. The predictable strength of our material helps them calibrate baths once, not repeatedly. Wood bleaching shops use oxalic acid to lighten stains and remove iron marks—just ask the floorboard specialists who sent us photos of their night-and-day results. Because our oxalic acid dissolves completely and doesn’t leave visible residue, woodworkers get a clean, uniform color with no patchy bleaching. Rare earth mineral processors run our material through leaching systems, where even tiny metal impurities in the acid can interfere with separation and recovery rates. As purification technology has evolved, so too has demand for cleaner acids—this product was born from those demands, not just as a marketing claim but as an answer to repeated product failures with inferior grades.

    How Oxalic Acid 99.6% Compares: Inside Knowledge from the Producer

    Over the decades we have run side-by-side trials, testing our high-purity material against “industrial” or technical grade batches from other suppliers. Subtle differences go beyond lab sheet readings. We’ve seen technical grades introduce trace minerals—some days it’s iron, other days silica or even calcium—that can gum up reaction vessels or foul downstream catalysts. Employees cleaning tanks after a technical grade batch know the headaches of stubborn residues: discolored build-up, inconsistent pH drift, and failed batches. Our process holds these interferences to the lowest practical levels. We have seen too many instances where operators had to run extra water flushes, delay production, or even scrap entire lots because of unseen contaminants in the raw chemical. By focusing on a tight crystallization protocol and careful raw material sourcing, our product avoids surprises. Over time, customers have become fluent in the “hidden costs” of switching to a lower grade: wasted solvent, failed coatings, and shortened equipment life.

    The Human Side: Lessons from Long-Term Users

    We are often in touch with maintenance supervisors and specialty contractors who use oxalic acid for building conservation and restoration. The margin for error shrinks when a mistake means a stained floor or etched historic tile. With earlier suppliers, these businesses faced unpredictability: sometimes a batch performed well, then suddenly left unsightly residue on delicate surfaces. By shipping a consistent, high-purity product, we help reduce remedial jobs and the stress that comes with them. Customers point out that buying oxalic acid wasn’t just about the per-kilo price, but about peace of mind during the critical last hour of a restoration project. Over the years, some have tried to save costs by switching to alternate grades, only to return with stories of projects delayed, finishes damaged, and reputation on the line. The lesson has been clear: chemical quality protects more than just the process, it shields relationships and trust.

    Sustainability and Waste: Eyes on the Future

    Producing oxalic acid at 99.6% purity means managing effluent, solvent, and byproduct streams with the same precision as the finished product. In our facility, the closed-loop process maximizes acid recovery and minimizes discharge, not just for regulatory compliance, but for operational efficiency and community responsibility. Waste streams are monitored every shift for trace metals and organic residues to avoid both environmental issues and costly plant upsets. Safer handling and containment procedures grew, not out of bureaucratic rules, but from worker feedback and years of hands-on improvements. Reduced dust and controlled airflow in packing lines lowered respiratory irritation reports. By designing the process to favor crystalline formation, not just “acceptable output,” we cut down on off-spec fines—a win for both production cost and health.

    Meeting Demands for Documentation

    The question of purity and traceability matters more every year, as customers in pharmaceuticals, food processing, and electronics require detailed records and confidence in the chain of custody. We answer not just with test sheets, but with complete batch histories and process data. Process audits welcome third-party inspectors, and we value the feedback. When a client requested deeper analytics on trace iron, a process team spent late nights testing new sampling points, adjusting filtration, and dialing in spectrographic analysis. The resulting reduction in iron content didn’t show on the sales sheet, but it showed in the results. For clients who think in “parts per billion,” only hands-on control and continual improvement meet those needs.

    Missteps and Feedback: Listening to the End User

    Mistakes in chemical manufacturing don’t linger in a vacuum. An uncontrolled impurity often comes back as a phone call or urgent email from a production line somewhere. Tracing the source of a stained floor panel or a failed batch led to process changes—even when the error came from a “statistically acceptable” variance. We learned early that batch release by specifications alone isn’t enough; process engineers visited end-user operations, watched the chemical in use, and documented unexpected effects. User feedback has led to changes in particle size distribution, improved packaging strength, moisture control, and labeling clarity. This cycle continues because few challenges in manufacturing stay solved forever. Each time a client’s process changes or market standards tighten, we revisit our protocols, run fresh trials, and adapt. That feedback loop has tightened the connection between our team and the chemists, technicians, and craftsmen who rely on our material.

    Differences that Matter: Purity in Practice

    Other oxalic acid grades on the market can look similar at a glance—white powder in a sealed container. Touch, flow, and dissolution reveal the real differences. We take samples from every lot, stir it into water, and note if any gritty residue settles at the bottom of a clear beaker. That test, learned from hands-on shop work, catches sub-visible residues that slip by standard purity screens. Contaminant levels drift lower in our product because the process never stands still; raw material refinement and equipment upgrades shave fractions of impurities with each improvement cycle. For bulk customers, those differences appear as extended filter life, more stable process temperatures, and fewer maintenance shutdowns. Every solvent recycler, paper mill, or electronic materials lab finds their own “pain points”—we address these through process tweaks and tight batch oversight. The work shows up not in marketing language, but in more uptime and fewer calls for technical support.

    Safety—and Real Experience—Behind Each Package

    Oxalic acid requires care in handling. Over the years, we’ve worked with safety team leaders to simplify training, color-code containers, and print unambiguous warnings where they matter most—on the packaging, not in a file folder. Regular plant walk-throughs turned up issues with drum stacking, spill risks, and PPE compliance. By investing in more robust packaging and improved closure designs, we aim to minimize accidents and support safe handling from loading dock to point of use. Conversations with warehouse managers led to a redesign of labels for easier reading in poor light. These are not just compliance points, but lessons drawn from a factory floor that knows the cost of downtime and the value of straightforward communication.

    Beyond the Drum—Supporting Operations at Scale

    It’s easy to think of oxalic acid as just another commodity. In practice, real operations live or die by minute differences in input quality. Plating lines running at high speeds, fiber plants seeking yield improvements, and chemical formulators tuning reaction times all asked for something better than “good enough.” We listened. Material sourced from multiple origins, or from whip-sawing price markets, carries risks of uneven composition and unwanted trace metals. Early in our export journey, we learned how regional water content could destroy product shelf life; since then, every bag leaves our facility sealed against humidity, with hygroscopicity measured and controlled. This ongoing attention helps keep the product at spec even after transcontinental transport. We consider the afterlife of every drum—whether it will be opened in a high-humidity port or a dry inland factory. Every detail, from moisture barrier to lot coding, reflects feedback from actual users and the knowledge gained from decades in production.

    Supporting the Industry Standard—And Pushing It All the Time

    Industry benchmarks are always moving. Twenty years ago, 98.5% purity oxalic acid sufficed for most processes. Demands for higher purity came from equipment upgrades, regulatory pressures, and the pursuit of higher yields and fewer failures. Some buyers switched suppliers often, chasing price. Others saw the value in coming back when things went wrong. Consistency and transparency in production matters—not only for specs on a test sheet but for the long-term health of equipment, stability of process, and quality of finished goods. The lessons we learn keep folding back into our process—looking ahead, not resting on the yesterday’s quality line.

    Working in Partnership: Real Support, Not Just Supply

    Producing oxalic acid is not simply about filling drums; it’s a process shaped by feedback from real people with real deadlines. Maintenance engineers, procurement officers, and plant technicians call us not to hear about features, but to fix problems. That knowledge creates a two-way partnership: production adapts to the demands of the field, not the myth of a “one-spec-fits-all” world. Whether a textile batch runs 10% faster or a plating shop reduces rinse cycles, the benefits add up beyond spreadsheets. Our technical teams have walked customer lines, analyzed process residues, and recommended custom lot blends. That level of engagement shapes how we approach every production run—anticipating issues before they become bottlenecks, and acting when customers need answers, often in real time.

    Addressing Common Issues with Lower Grade Alternatives

    In the market, alternative grades of oxalic acid can attract with lower upfront prices or ready availability. But in practice, these alternatives have cost our customers in process reliability, extra maintenance, and product returns. Lower grade material tends to introduce invisible risks—trace metals, variable moisture, and inconsistent crystallization—whose effects appear days or weeks down the line. Paper manufacturers reported incompletely bleached pulp, with downstream discoloration that only extensive troubleshooting uncovered as linked to an off-spec batch of oxalic acid. Chemical formulators experienced failed reactions due to unexpected pH behavior from contaminants in lesser material. These stories repeat across industries. Our focus on process control, traceability, and feedback solves these problems at the source, not after the fact.

    Improvement as Process—Not Slogan

    Years of working in specialty chemical manufacturing have taught us that product quality is measured not just by today’s output, but by how quickly and openly we respond to failures and new demands. Each complaint becomes a blueprint for the next improvement—not a mark against, but a challenge to do better. When we adopted continuous online moisture monitoring, it was in response to caking issues at customer warehouses. When problems arose from bulk unloading in humid climates, we responded with new bagging and containment solutions. It’s not enough to claim high purity; the real test starts in the moment the drum is opened and the material put to use. That daily discipline marks the difference between an industrial commodity and a product shaped by hard-won experience.

    Looking Ahead: The Future of High-Purity Oxalic Acid

    Clients push us to keep improving—not by asking for cheaper product, but through the growing demands on purity, documentation, and logistical reliability. As industrial processes embrace greater automation and tighter tolerances, our search for both product and process improvements stays constant. Chemists once content with “mostly pure” inputs now demand answers measured in fractions of a percent. We do not take that shift lightly. A deep culture of process monitoring, staff training, and open-door audits helps us meet the trust placed in each shipment. Our team knows that even a perfectly produced batch has room for improvement, and every production run is a checkpoint along a longer journey.

    In Closing: Pride in What We Make

    Walk through our production floor and you will feel the rhythm of a process that never stands still—each valve turn, QC check, and loading dock scan tells a story about where high-purity oxalic acid comes from, where it goes, and who depends on it. The differences between average and exceptional product arise from countless small decisions, lessons learned from problems on real shop floors, and corrections inspired by those who use it sevendays a week. Our commitment to quality and improvement grows from the knowledge that every kilo shipped out carries more than a chemical—it carries the sum of hard work, constant listening, and trust built batch by batch.