Metarsenic Acid

    • Product Name: Metarsenic Acid
    • Alias: Arsenic acid
    • Einecs: 236-094-4
    • Mininmum Order: 1 g
    • Factroy Site: Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry: admin@ascent-chem.com
    • Manufacturer: Ascent Petrochem Holdings Co., Limited
    • CONTACT NOW
    Specifications
    HS Code 699992
    Chemical Name Metarsenic Acid
    Chemical Formula HAsO2
    Molar Mass 107.93 g/mol
    Appearance White solid
    Solubility In Water Soluble
    Density 2.73 g/cm³
    Melting Point 160 °C (decomposes)
    Cas Number 13986-26-0
    Acidity Pka 6.9
    Oxidation State Of Arsenic +3
    Odor Odorless
    Toxicity Highly toxic

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

    Packing & Storage
    Packing Metarsenic Acid is packaged in a 500g amber glass bottle, clearly labeled with hazard symbols, safety instructions, and batch information.
    Shipping Metarsenic Acid should be shipped in tightly sealed, corrosion-resistant containers, clearly labeled as toxic and hazardous. It must be packaged according to relevant regulations (e.g., DOT, IATA), and handled by trained personnel. During transit, it should be separated from incompatible substances and kept away from food, feedstuffs, and heat sources.
    Storage Metarsenic acid should be stored in a tightly sealed container in a cool, dry, well-ventilated area, away from incompatible substances such as strong reducing agents. The storage area should be clearly labeled, with restricted access, and equipped for containment in case of leaks or spills. Proper personal protective equipment should be worn when handling and storing this toxic and corrosive compound.
    Application of Metarsenic Acid

    Applications of Metarsenic Acid in Industrial Manufacturing

    Metarsenic acid is an established chemical intermediate used in several specialized industrial sectors. As a direct manufacturer, we supply metarsenic acid to clients engaged in precise formulations and controlled processes. All applications below reflect authentic industrial practice, compliant with current regulatory requirements and focused on end-use product performance.

    1. Glass Manufacturing for Special Optical and Filter Glasses

    Glass manufacturers incorporate metarsenic acid during the batch mixing stage to control the oxidation state within specialty glass melts. This material serves as an essential fining agent for decolorizing and removing minute gas bubbles, particularly useful in high-value glasses requiring superior clarity and light transmission properties. Operators finely tune the dosage relative to batch size, glass composition, and the presence of other redox-sensitive components.

    Industry compliance standards

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    2. Electronics Industry: Semiconductor Doping for GaAs Wafers

    Semiconductor fabrication plants utilize controlled quantities of metarsenic acid to supply arsenic for gallium arsenide wafer production. This method achieves high-purity arsenic environments within closed epitaxial growth reactors. Precise solution dosing enables uniform doping profiles that support high-performance microelectronic devices. Operators follow strict segregation, ventilation, and exhaust protocols due to arsenic’s regulated handling profile.

    Industry compliance standards

    Typical usage ratio

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    3. Wood Preservation Compound Precursor

    Industrial preservative blend manufacturers employ metarsenic acid to produce copper arsenate-based solutions used in timber processing. This practice persistently meets strict environmental controls. Exact ratios align with timber species, preservative system type, and prevailing regional pesticide restrictions. Suppliers purify input materials to enable consistent impregnation and leach resistance of treated woods, critical for outdoor structures and utility timbers.

    Industry compliance standards

    Typical usage ratio

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    4. Agricultural Chemicals: Herbicide Intermediate Synthesis

    Plants synthesizing organoarsenic herbicides use metarsenic acid as a key inorganic feedstock in aqueous-phase reactions. The chemical participates in conversions forming arsenic-containing actives for selective weed control agents. Compliance dictates rigorous emission controls and restricted worker access. Usage rates adjust based on finished molecule, manufacturing method, and downstream product registration limits.

    Industry compliance standards

    Typical usage ratio

    Downstream process integration

    Final product types

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    Certification & Compliance
    More Introduction

    Metarsenic Acid: Experience From the Production Floor

    What We Make, and How We Make It

    Metarsenic Acid takes up a unique spot in our portfolio of specialty chemicals. Over years of manufacturing, it’s become clear that reliability and traceability in this product matter much more than some appreciate. We produce it in the crystalline powder model, which ensures stability under normal storage and ease of handling — often overlooked, but anyone who’s worked with unstable arsenic compounds knows what a headache they can bring.

    Our main batch specification targets purity not below 98%. Most years, we hold batch analyses at 99% or higher for critical clients. Every time our team prepares a lot for shipment, we check not only arsenic content but also moisture, insoluble matter, and typical trace contaminants. This is not just box-checking. Downstream users, whether in glass manufacturing or organic synthesis, demand predictable results and consistent handling profiles. They care as much about the trace sodium as about the headline element.

    Why Metarsenic Acid Matters: Applications We See Every Day

    Factories, research labs, and processing operations use Metarsenic Acid for reasons distant from academic texts. In textile treatment, its chemistry adds weight to silk; the difference in fabric hand is tactile after correct application. In the glass sector, particularly specialty colored glass, its controlled arsenic content helps manage bubble formation and clarity. We’ve shipped hundreds of tons through this channel, and a missed batch spec could mean a ruined kiln run — not just statistical nonconformance.

    For organic chemists, Metarsenic Acid gives a tool rarely found elsewhere. Its oxoacidity and reactivity open up wagons of synthesis routes, especially for arsenic-containing intermediates. We’ve seen some customers deploy it as a substituent in industrial biocide formulas for wood preservation. Those of us who’ve toured treated timber plants will recognize its signature by the smell and the sheen left on wood. Regulatory shifts don’t erase technical needs overnight; customers know they’ll need compliant paperwork and batch consistency, and we provide both.

    Working With Metarsenic Acid: Handling and Differences From the Crowd

    It’s often confused with arsenic trioxide and arsenic acid, but any plant technician can outline the practical differences. Arsenic trioxide, for example, comes as a white, semi-volatile powder susceptible to sublimation at higher temperatures. This can throw off dosage in glass melts and release unpleasant fumes in poorly vented areas. Metarsenic Acid, by contrast, stays put until an operator deliberately introduces it into a reaction, and this property means lower loss rates in continuous processes.

    Arsenic acid itself, another common compound, is more soluble and chemically aggressive, leading to faster reaction rates but at the expense of control. Metarsenic Acid’s relative stability checks unwanted side reactions in the factory or pilot plant. Some clients use this to their advantage in multi-stage syntheses, especially where the kinetics of arsenic hydrolysis need fine-tuning. It shows up in reaction design, not just as a reagent, but as a tool for achieving repeatable purity after workup.

    We balance particle size during grinding and drying. Oversized crystals resist blending; too much dust, and you get inconsistent dosing or clumping. Through practice, our teams have found a sweet spot around 100-300 microns, allowing operators downstream to disperse the product in both aqueous and non-aqueous environments. Technicians in batching rooms notice the difference; steady scooping, less compaction, no frustrating blockages in the augers.

    Supply Chain Reality: From Raw Materials to Customer Docks

    No manufacturer can ignore supply chain disruptions or quality shifts in primary arsenic ores. Our process starts with arsenic-carrying minerals sourced with documented chain of custody — there’s no shortcut here. Any break in this chain means potential contamination; our quality assurance staff screen incoming materials down to the parts-per-million level for lead, selenium, and antimony — cross-contamination that, left unchecked, wreaks havoc for high-purity users.

    Energy management enters the equation, too. Metarsenic Acid needs careful temperature profiling in its oxidation and hydration steps. Too cold, and yields fall off; too hot, and impurity uptake spirals. Adjustments to this thermal dance become visible in final product clarity, free arsenic content, and even the faint tint of the powder. Each time an operator shifts the steam flow or tweaks the residence time in the reactor, someone’s measuring the consequences in the downstream QC lab.

    Transport isn’t trivial. We store the product in double-lined HDPE drums, with anti-tamper bands, not just for compliance but because moisture ingress during transit changes both weight and chemical behavior. We’ve had summers where a missed container seal on a rail shipment to southern Europe led to clumps that customers had to redissolve. This points to the irreducible value of manufacturing focus: only by running through the entire chain, batch after batch, do you see where the obvious can become expensive.

    Health, Safety, and Keeping to the Right Side of Regulation

    As a manufacturer, we breathe the air and sweep the floors in the same facilities our product passes through. Every shift brings new regulatory updates, whether from local environment boards or the tightening requirements in export markets. Metarsenic Acid demands respect; it carries risks of inhalation and external contact, and dust controls are not optional. Our workers suit up in half-face respirators and double gloves, not because rules say so, but because every long-term plant hand has seen what neglect brings.

    Waste control tells the same story. Rinsate from reaction vessels, spent filters, and even operator PPE goes through central neutralization and safe disposal, certified by spot audits. We track and document every lot because compliance means everything. Our customers, some with their own internal auditors, send field engineers to tour the facility. They want to see dust-collection systems, batch logs, even grain size samples. They leave with proof because we show the plant, not just spec sheets.

    Product Development: How Practice Trumps Theory

    Years ago, we saw emerging requests for lower-impurity Metarsenic Acid, especially from advanced electronics clients. These groups needed arsenic carriers that didn’t bring in halide or oxide contaminants. The only way to hit those targets involved multi-stage recrystallization and closed-system drying. This took months of process tweaks. Kettle pressure profiles, agitation rates, filtration media — every input came under review. After several painful learning cycles, we landed on a production protocol that lifted average selenium contaminants two orders of magnitude below typical industry values.

    Newer applications still drive our R&D efforts. From pesticide intermediate production to heavy-metal staining reagents in microscopy, shifting markets ask for tighter and more narrowly focused specification windows. We don’t simply respond with another technical data sheet. Our product development crew stands between the pilot line and the analytical chemist — where someone has to reconcile real-world throughput with repeatable analytical reports.

    This lived-in perspective lets us offer tweaks, not templates. For example, in textile finishing, one client needed a consistent bland color effect requiring non-interfering side ions. We adjusted water profile, process pH, and crystallization kinetics to deliver. No generic “industry standard” can substitute for post-installed customer feedback after three production campaigns on customer lines.

    Environmental Responsibility: Legacy and Future

    No operator forgets that arsenic chemistry carries a historical burden. Sites mishandled waste for decades, leaving soil and water challenges. Every permit approval, every environmental report, now rides on present-day manufacturers demonstrating not just cleaner production, but cleaner thinking. On our floor, scrubbers and water recovery loops run with daily monitoring, not quarterly samples. Engineers who design process lines adjust feeder rates and stream recycling constantly to minimize environmental load.

    Our clients increasingly demand cradle-to-gate environmental accounting on shipments. It’s changed how we select raw minerals, what type of energy we commit in the plant, and how off-site disposal is contracted. Over time, many of our product improvements — better filtration, cleaner auxiliary chemicals, and tighter batch traceability — have roots in this pressure for accountability. Suppliers upstream are adjusting just as fast, because they know that once the bar is raised, the entire chain comes with it.

    Metarsenic Acid presents fewer offgas and fugitive emission headaches during blending and storage than more volatile arsenic salts. This advantage plays straight into our waste reduction strategy on-site, with actual measurements showing marked reductions in air monitoring alerts as process design evolved.

    Differences From Commodity Chemicals: Where Manufacturing Choice Matters

    Buying from a direct manufacturer alters everything in this market. We control the grind, the temperature gradients, the packaging — all elements that resellers can only speculate about. End users have learned that real value in Metarsenic Acid comes from direct communication with those who run the reactors and wash the filter packs. Market-side traders flip “spec-compliant” product for cents per kilo, but the risk of lot-to-lot drift and hidden impurities becomes real in critical applications.

    This hands-on knowledge allows us to tune product attributes to customer settings. For instance, in glassmaking, one batch modification can align the release profile in the melt for more uniform product output; in biological applications, side ion exclusion from sourcing and process water can dramatically reduce unexpected reactions or regulatory setbacks. Walk the plant, and you notice no two shipments are exactly alike — each follows a shared process backbone but answers current needs, process limits, and feedback rolls.

    Distribution channels far removed from source often miss these crucial cues. By owning the manufacturing process, we’re able to anticipate, not simply react, to changing customer specs. Our best lessons have come from customer feedback, not spec compliance audits. Phone calls over a small change in powder flow, replies to a mislabeled drum, or lab requests for alternate purity — each builds experience that no trading intermediary can offer.

    Continuous Improvement: Real-World Feedback, Company Growth

    Over two decades, our product spec sheets have changed far less than our operational procedures. Lab tests, customer trial lines, and supply chain crises shape how we work. One of the most unexpected changes has been the growing demand for tailored packaging and batch sizing. Some glassmakers want big drums for uninterrupted feed, while research labs ask for tightly sealed jars to avoid exposure between lots.

    Our documentation now includes full traceability back to raw mineral batches, processing lot, and even reactor number. This level of detail came not from theoretical necessity, but in response to compliance requests from regulatory bodies and customer auditors. Practices like this are born on the manufacturing floor, not in boardrooms, and define how end-users trust or walk from a supplier relationship. Batch records, process photos, non-conformance logs — these show that our commitment goes beyond an occasional press release.

    Each year, our process review cycle invites technicians, engineers, and customer-facing staff to suggest and debate new options for tighter product control, lower emissions, or new application tweaks. Small changes accumulate: a new vacuum pump, a better glove box for sample prep, a tweak to cleaning protocols in the loadout area to protect barrel seals. The team learns together, not through slogans but through hands-on work and shared outcomes, positive and negative.

    Looking Forward: The Growing Role of Direct Expertise in Chemical Sourcing

    We expect regulatory scrutiny and end-user demands around Metarsenic Acid to continue rising. No shortcut exists that delivers predictability and safety outside of disciplined, visible practice on plant lines. Technical documentation, environmental audits, and customer inspection visits offer an ongoing reason to perfect process and delivery. Our daily work in the plant guarantees that every lot of Metarsenic Acid that leaves our door meets not just a line on the spec sheet, but the true expectations of those whose results depend on it.

    For us, real trust never comes from marketing language. It comes from showing how decisions made in the control room — the temperature profile set on the crystallizer, the way we manage spent wash water, or the method we use to seal containers for a long haul — affect outcomes at a customer’s site. Even small choices in handling, packaging, and communication mean that chemists, plant operators, and safety managers know they can rely on what arrives.

    Each day on site builds a foundation for the next. Operators bring know-how, lab analysts bring precision, and the product itself reflects every learned lesson. Metarsenic Acid moves steadily from raw mineral to finished batch, shaped by needs that only direct experience uncovers. While we manufacture it for many uses, the real story lies in how we make those uses possible — through experience, transparent dialogue, and processes anchored in the realities of everyday production.

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