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Ammonium Bisulfite

    • Product Name Ammonium Bisulfite
    • Alias Ammonium hydrogen sulfite
    • Einecs 232-260-9
    • 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
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    Specifications

    HS Code

    736245

    Chemicalname Ammonium Bisulfite
    Chemicalformula NH4HSO3
    Molarmass 99.11 g/mol
    Appearance Colorless to pale yellow liquid or crystals
    Odor Pungent, sulfurous odor
    Solubilityinwater Highly soluble
    Density 1.34 g/cm³ (solution)
    Ph Acidic (usually around 4-5 for 40% solution)
    Boilingpoint Decomposes before boiling
    Casnumber 10192-30-0

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

    Packing & Storage
    Packing Ammonium Bisulfite is packaged in a sturdy 25 kg white HDPE drum with secure lid, labeled with product and hazard information.
    Shipping Ammonium Bisulfite is shipped in tightly sealed, corrosion-resistant containers such as drums or totes to prevent leaks and exposure. It should be transported upright, away from incompatible substances, ignition sources, and extreme temperatures. Proper labeling, documentation, and adherence to applicable transportation regulations are essential to ensure safe handling during shipping.
    Storage Ammonium bisulfite should be stored in a cool, well-ventilated area away from direct sunlight, heat, and incompatible substances such as acids and oxidizers. Use tightly sealed, corrosion-resistant containers to prevent leaks and moisture absorption. Label storage containers clearly, and avoid storage near food and drink. Keep storage areas equipped with spill containment and readily available emergency wash stations.
    Application of Ammonium Bisulfite

    Applications of Ammonium Bisulfite in Industrial Manufacturing

    As a direct manufacturer, we work closely with industrial partners worldwide to supply high-grade ammonium bisulfite for established downstream applications. Below, we detail primary sectors where this material plays a vital role, highlighting specific standards, formulation parameters, integration in production processes, and end product categories so users can precisely match application needs.

    1. Oxygen Scavenging in Oilfield Water Treatment

    Oilfield injection systems rely on precise oxygen removal to prevent downhole corrosion, pipeline damage, and microbiological growth. Ammonium bisulfite offers high reactivity for continuous oxygen scavenging in produced and injection waters, especially where temperature and pressure conditions demand reliable performance. Compliance with field testing protocols and regulatory water discharge requirements ensures safe handling and downstream compatibility for oil and gas operators. When matched to the well system’s flow rate, salinity, and dissolved oxygen, the dosage is tailored for cost efficiency and compliance.

    Industry compliance standards

    • API RP 56/63 (Recommended Practices for Water Treatment in Oilfield Operations)
    • ISO 11960, ISO 10418 (Oil and gas industry—Petroleum and natural gas industries—Water injection systems)
    • REACH, TSCA compliance for chemical handling
    • US EPA Discharge Permits (40 CFR 435) for water standards

    Typical usage ratio

    • Range: 20–100 mg/L, adjusted based on dissolved oxygen content and flow rate
    • Higher dosages for sour service, rapid throughput, or high DO source waters
    • Optimization via online monitoring and titration testing

    Downstream process integration

    • Injection upstream of downhole equipment, pipelines, and separation units
    • Pre-dosed in freshwater makeup or recirculated produced water
    • Automated dosing along with other water treatment additives

    Final product types

    • Treated injection water for secondary recovery (EOR)
    • Reduced-corrosion produced fluids
    • Water discharge streams compliant with regulatory oxygen limits

    2. Bleaching Agent in Paper and Pulp Manufacturing

    Paper mills implement ammonium bisulfite during the pulp bleaching stage to efficiently reduce residual lignin while minimizing pulp fiber damage and AOX (adsorbable organic halide) formation. The low-metal acidic conditions created by this additive preserve fiber brightness and strength, particularly for specialty paper grades where uniform appearance and low toxic residue are mandated by customer and regulatory demands. Dose levels and addition points are closely controlled according to the pulp kappa number and bleach plant configuration to ensure downstream process yield and effluent safety.

    Industry compliance standards

    • ISO 5263 (Pulps—Laboratory beating)
    • EN 647, TAPPI T236 (Pulp, paper industry—Bleaching performance)
    • EU BAT for Pulp & Paper (Directive 2010/75/EU)
    • REACH Annex XIV/ XVII for chemical restrictions

    Typical usage ratio

    • 0.2–1.5% by dry pulp weight, with adjustments according to kappa number and pulp type
    • Lower doses for high-brightness or deinked pulps; higher for recycled or semi-chemical pulps
    • Process laboratory validation before full-scale addition

    Downstream process integration

    • In-line mixing at the first or subsequent bleaching towers
    • Dosed into bleach liquor with pH and ORP control instrumentation
    • Continuous monitoring for spent liquor treatment

    Final product types

    • Printing and writing paper
    • Tissue and hygiene papers
    • Packaging board

    3. Food-Grade Preservative for Beverage and Sugar Processing

    Food-grade ammonium bisulfite acts as a preservative and process aid for certain beverage and sugar production plants, serving to inhibit microbial oxidation and unwanted color formation during raw juice clarification and syrup storage. Food safety authorities impose strict regulations on allowable content and chemical purity, requiring full traceability and batch documentation. Operators select dosing rates based on the reducing sugar content, batch volume, and target shelf life, typically validated through QC sampling at critical stages—especially where end-users specify compliance for food export.

    Industry compliance standards

    • FCC (Food Chemicals Codex) specification for Preservatives
    • Codex Alimentarius (E222: Ammonium Bisulfite—where approved)
    • 21 CFR 184.1135 (US FDA Food Additive)
    • HACCP, ISO 22000 (Food Safety Management Systems)

    Typical usage ratio

    • 10–100 mg/kg in sugar juice or syrup, subject to local limits
    • Adjusted for product type, storage duration, and sanitation risk level
    • Application reviewed per batch COA and composition testing

    Downstream process integration

    • Inline dosing after juice extraction and filtration
    • Batch tank addition during syrup preparation or nectar formulation
    • Control points at blend storage, bottling, or tankers

    Final product types

    • High-purity sugar syrup for food industry
    • Beverages (non-carbonated soft drinks, certain juice concentrates)
    • Compounded syrups for confectionery

    4. Reducing Agent for Cyanide Destruction in Gold Mining

    Gold recovery plants employ ammonium bisulfite to neutralize and destroy residual cyanide in tailings, achieving regulatory compliance for wastewater release and minimizing downstream environmental liabilities. Operators dose the solution during the detoxification stage post-leaching, reacting with both free and weak-acid dissociable cyanides. Real-time monitoring and titration guide the process, as regulators often audit discharge streams for strict maximum total cyanide limits. The additive’s liquid form allows safe storage and precise metering, ensuring destruction efficiency while controlling operational risk.

    Industry compliance standards

    • ICMI (International Cyanide Management Code)
    • USEPA 40 CFR 440 Subpart J (Gold Mine Effluent Guidelines)
    • Australian Cyanide Code for Mining
    • ISO 14001 (Environmental Management System)

    Typical usage ratio

    • 100–300 mg/L per ppm cyanide present in tailings
    • Exact ratio determined by cyanide concentration, pH, and flow volume
    • Lab titration and online sensors used for continuous adjustment

    Downstream process integration

    • Introduction at tailings neutralization tanks after gold recovery
    • In-line with lime and peroxide for multi-stage detox processes
    • Monitored at effluent settling ponds before release or reuse

    Final product types

    • Detoxified mine tailings
    • Wastewater fit for discharge within cyanide limits
    • Recycled process water suitable for non-potable operational reuse

    5. Photographic and Imaging Chemical Formulations

    Photographic processing facilities use ammonium bisulfite as an ingredient in black-and-white developing baths and color-processing stabilizers to arrest unwanted oxidation and control residual silver. Adherence to strict photographic chemical standards ensures batch-to-batch stability, critical for archival permanence in photographic and printing industries. Dosage adapts to the film emulsion load and system throughput, while integration at specific stages in the chemical mixing gives processors direct control over image clarity and color fidelity.

    Industry compliance standards

    • ISO 18902 (Imaging materials—Processed films—Specifications for photographic chemicals)
    • ANSI/NAPM IT9.2 (Archival photographic processing)
    • REACH registration for supply of imaging chemicals
    • Factory GWP/cleanroom management for contamination control

    Typical usage ratio

    • 0.5–5 g/L in developer or stabilizer solution, based on developing bath size and exposure demand
    • Dilution ratio selected for process type: rapid, standard, or archival processing
    • Batch control via colorimetric or titration QA

    Downstream process integration

    • Direct addition to developer or fixer solution reserviors
    • Integrated in automated mixing lines for large photo finishing labs
    • Controlled at in-line cartridge replacement in mini-labs

    Final product types

    • Developed photographic films
    • Archival microfilms
    • Photographic prints and imaging plates
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    Certification & Compliance
    More Introduction

    Ammonium Bisulfite: Experience from the Production Floor

    Understanding Ammonium Bisulfite Up Close

    Every day at the plant, we shape and ship thousands of kilograms of Ammonium Bisulfite. Some might pass by the name on a label, but to industrial users, this product carries specific expectations. Ammonium Bisulfite, which forms from combining ammonia and sulfur dioxide in water, comes as a clear to slightly yellowish liquid with a distinct odor. Our most requested models range around 40%-70% solutions by weight, with common specifications held to strict consistency for the sulfur dioxide content and low impurity levels—since uninvited ions can affect performance down the line.

    Why We Produce Ammonium Bisulfite

    In our work, conversations with customers drive changes in production methods or specification adjustments. Paper mills, oil fields, and water treatment plants count on the reliable presence of each molecule. For pulp and paper, Ammonium Bisulfite takes on the essential job of pulping wood in the sulfite process. In oil recovery, its role shifts to oxygen scavenging, stopping corrosion from eating through metal pipes. Many of our clients in municipal water treatment rely on the same oxygen-scavenging properties to guard against rust and prolong equipment life.

    Over decades, the product has earned this reputation by keeping a low profile. Its chemistry reacts fast—scrubbing oxygen from water or serving as a reducing agent in a bleaching sequence. Customers often expect predictable results, which means our quality control team spends a lot of time checking parameters like SO2 content, pH, and the clarity of each batch. Even a slight miss can set off a chain of complaints or force a batch withdrawal, and that feedback stays with us.

    Lessons Learned in Manufacturing

    Scaling production is more than just turning a valve. As a manufacturer, we've seen how even a few parts-per-million of heavy metal impurities can throw off a customer’s process. Unexpected side reactions get expensive, and we bear that burden if something slips through. To avoid this, we track raw material purity and use closed systems to shield batches from air, which slows down unwanted oxidation.

    We've had staff waste hours tracking down problems that ended up in slightly lower ammonia content, pushing the pH off by a hair. This can happen if the absorption towers run hot in summer. These headaches force improvements, so we've invested in better temperature controls and online analyzers, letting us check quality in real time.

    What Sets Ammonium Bisulfite Apart from Alternatives?

    Stand in the storage yard with tanks lined up—Ammonium Bisulfite isn’t the only reducing agent around. Sodium Sulfite, Sodium Bisulfite, and Sodium Metabisulfite show up as white powders, while ours ships as a liquid. That liquid form saves end-users a lot of trouble. Customers avoid dust, reduce the risk of accidental exposure, and skip the step of dissolving powder, which speeds up batch operations. For continuous processes, pumps can draw straight from the drum with minimal fuss.

    Some plants have asked about switching to sodium-based options. We always share practical details rather than marketing hype. Many sodium salts create more byproducts, especially sodium sulfate, which piles up as waste for those running high cycles in closed systems. With Ammonium Bisulfite, the end product doesn’t hang around. Ammonium ions typically wash out or break down, so there’s less concern about scaling or buildup. Our wastewater accounts for every molecule, answering for each kilogram we ship as environmental compliance becomes stricter worldwide.

    A handful of specialty applications draw a sharp line. In certain food-processing or brewing plants, metal ions from sodium alternatives cause issues for flavor or clarity, so Ammonium Bisulfite stays in play due to its lower impact on taste and fewer unwanted side reactions. One brewery shared that their lagers cleared up after dropping sodium-based products in favor of our liquid. For us, this feedback drives home that the end-users notice far more than numbers on a certificate.

    Field Uses: How Clients Rely on Our Product

    Months of production and planning come down to how Ammonium Bisulfite performs once it leaves our plant. Pulp mills report higher yields when the dosing accuracy holds. They value the tight specification for free SO2, which helps stabilize the pulping process without producing excess acid. Overuse means product and process waste. Underdosing can leave residual lignin, and the paper quality drops. Operations managers call us directly with any drift—they notice quickly.

    Our clients in oil and gas fight an ongoing battle with rust. Field engineers calculate oxygen concentrations to prevent pitting and leaks, often running our liquid through automated injection pumps. Consistent concentration means they can set dosages and walk away, trusting the product to safeguard their multi-million-dollar infrastructure.

    Water treatment plants demand rapid oxygen removal to protect distribution lines, pumps, and boilers. Municipal clients want to avoid sodium buildup since their discharge limits tighten each year. Ammonium Bisulfite fits into these processes, matching up with other allowable chemicals by breaking down into forms that don’t linger as solid waste or add to sodium loads.

    Comparing Ammonium Bisulfite and Alternative Chemicals

    End-users weigh performance, handling, and regulatory considerations before selecting a reducing agent. Sodium-based reducers serve certain needs well but introduce solid handling problems, raise TDS in wastewater, and can complicate disposal. Some buyers ask if peroxide or ascorbate could substitute, but these have higher cost profiles and unwanted chemical reactivity in industrial-scale systems.

    From our production window, Ammonium Bisulfite’s liquid format always emerges as a major advantage. Customers in mining need fast-dissolving, easy-to-dose chemicals; liquids blend into process water smoothly and consistently. Chemical maintenance teams mention fewer feed pump blockages compared to powdered agents. Where hygroscopic powders clump in damp storerooms, our drum-stock liquids store for months if sealed, so plant managers appreciate the practical shelf-life.

    Comparing with Sodium Bisulfite, the latter does come cheaper per kilogram, but requires separate handling facilities for powder and can introduce operator safety hazards. Every plant we’ve toured with sodium-based dosing setups struggles more with clean-up, scaling, and dust inhalation risks.

    Emphasis on Purity and Traceability

    Feedback from industrial and specialty chemical buyers focuses on traceability and quality audit trails. Our plant certifications support their regulatory filings or customer audits. Buyers often send their own inspectors; trace metals, non-ionic contaminants, and stability over the storage period all attract questions. We invest in batch coding, sample retention, and regular internal audits. Customers value this transparency, especially as regulatory pressure grows around “forever” chemicals and unintended byproducts.

    In years past, minor contamination went unnoticed, but now virtually all clients run their own ICP-MS or ion chromatography scans. Any deviation from specified ranges triggers direct calls to our plant lab, not just our sales team, reminding us that reputation depends on direct accountability. Each batch of Ammonium Bisulfite carries test documentation for purity, with certificates reflecting not just broad specs but actual measured results for the order shipped.

    Responding to Product Evolution and Market Shifts

    As chemical manufacturing trends shift, sustainable supply chains take priority. We pay close attention to evolving local and regional emissions laws. Our plant upgrades recovery systems to reduce process vent losses and recapture sulfur dioxide, turning byproducts into sellable finished goods. Our effluent and emissions records are available for client audits.

    End-users demand assurance that Ammonium Bisulfite comes with a low environmental impact. Traceability from raw materials to shipment, and transparent management of byproducts, set responsible manufacturers apart in the market. Export customers in Europe and North America actively request life-cycle impact data, so we partner with third-party auditors to benchmark energy use and carbon output.

    Addressing Real-World Challenges

    Unplanned surges in sulfur pricing have tested both our purchasing team and our customers. During lean years for sulfur sources, we doubled up on relationships with multiple suppliers, tracked price movement trends, and boosted storage. Price volatility can drive customers to consider other chemicals, but many return for reliability and supply chain security.

    Logistics present their own hurdles. Ammonium Bisulfite ships as a regulated material, so our dispatch team trains extensively on spill prevention, safety, and emergency response. Salty winters or rainy monsoons in different regions challenge our shipping tactics, so insulated storage, double-sealed drums, and pressure relief in tankers keep product integrity up until arrival at the client’s plant. We share handling guides and site-specific delivery plans based on decades of lessons learned from the field.

    Continuous Improvement through Customer Collaboration

    Feedback cycles between our plant and users drive both incremental and sweeping upgrades. For example, we invested in new air scrubber systems after receiving frequent comments on minor but persistent odors from leakage. Adjusting production parameters improved worker comfort and earned positive feedback during customer visits.

    We created a rapid-response technical support team because our largest oilfield customers relied on urgent support during breakdowns. Advice on field injection rates, quick laboratory confirmation of delivered concentration, and troubleshooting unexpected precipitation helped restore plant operations. In one case, our team detected contaminated freight and replaced product before plant shut-down deadlines, earning crucial trust.

    Safe Handling and Storage Practices Shared With Clients

    Shipping out liquid chemicals brings responsibility. We train client teams directly on safe storage and pump calibration because exposure to product vapor can irritate the nose and lungs. Our team runs onsite sessions in both new facility commissioning and retrofits, advising on fleet tank cleaning, spill containment layout, and leak response drills.

    Over time, we’ve learned that small investments in secondary containment and regular line flushing cut costs down the road. Rather than waiting for regulatory mandates, our plant’s new-build tanks now feature integrated overfill alarms and emergency shut-offs, features developed in consultation with the most risk-conscious of our clients. They see fewer insurance claims and regulatory interventions, so our mutual interest aligns.

    Future Directions and Ongoing Research at the Plant

    Innovation for us isn’t an empty slogan—it takes shape through continued improvement of automation, online quality analysis, and secondary byproduct recovery. We install new process controls each year, aiming for tighter output ranges. Main production lines now run predictive maintenance analytics to avoid unscheduled downtime, and we share system upgrades with our long-standing customers to help them anticipate changes in specification batch-to-batch.

    Our research team investigates alternative formulation tweaks, responding to customer requests for greener credentials or application-specific adjuvants. Several pulp and brewery customers contribute to ongoing pilot trials, guiding process changes through in-depth feedback. It’s not only about meeting a standard, but about building genuine improvement with industry partners who see the whole supply chain.

    Why Trust and Relationships Matter in Ammonium Bisulfite Production

    Experience shows that trust matters more than brochure claims. We report challenges and errors as openly as successes. Some clients have stuck with us for decades because we troubleshoot, offer honest advice about testing alternatives, and share all batch documentation—good or bad. Global markets remain unpredictable, so long-term loyalty hinges on that transparency and willingness to stand by product quality.

    Customers cite our regular lab tours, onsite engineer visits, and willingness to tailor process tweaks as major reasons to maintain partnerships through cycles of price shifts and new regulatory demands. Many now include us in early process redesigns or expansion planning, knowing that our insight from years on the chemical production floor adds value.

    A Manufacturer’s Perspective: The Real Value of Ammonium Bisulfite

    On production lines and during audits, one lesson comes clear: Ammonium Bisulfite isn’t just a product of a reaction vessel, but a product of process discipline, feedback, and evolving safety culture. In our plant, quality comes from daily vigilance, tight control, and conversations with the people who actually use the chemical. Each improvement reflects a real-world problem solved, an application refined, or an environmental concern addressed.

    The liquid nature, ease in dosing, and minimal long-term buildup set Ammonium Bisulfite apart from its competitors. Customers in water treatment, pulp production, oil recovery, and specialty chemicals keep it in demand year after year, despite the arrival of new contenders. Its continued role across industries traces back to consistent performance, manageable environmental profile, and the backing of direct manufacturer commitment.

    We see ourselves not only as producers but as partners in our customers' operations. Each drum and tanker represents a shared outcome—efficient pulp conversion, infrastructure protected from corrosion, wastewater released without violations. The real test plays out long after the product leaves our gates, in the reliability of systems run by the teams we serve. Ammonium Bisulfite may not stand in the spotlight, but in our experience, it quietly holds up entire processes across a staggeringly wide range of industries.