|
HS Code |
353475 |
| Chemical Name | Ammonium Hydrogen Sulfate |
| Other Names | Ammonium Bisulfate |
| Chemical Formula | NH4HSO4 |
| Molar Mass | 115.11 g/mol |
| Appearance | White crystalline solid |
| Odor | Odorless |
| Solubility In Water | Very soluble |
| Density | 1.78 g/cm3 |
| Melting Point | 147 °C (decomposes) |
| Ph In Solution | Acidic |
| Cas Number | 7803-63-6 |
| Stability | Stable under recommended storage conditions |
As an accredited Ammonium Hydrogen Sulfate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | White, high-density plastic bottle with secure screw cap, labeled "Ammonium Hydrogen Sulfate, 500g," includes hazard symbols and batch information. |
| Shipping | Ammonium Hydrogen Sulfate should be shipped in tightly sealed, corrosion-resistant containers, clearly labeled, and protected from moisture. Handle with care, avoiding heat and incompatible substances. Follow all relevant transportation regulations, including UN and DOT guidelines. Store upright and ensure proper documentation accompanies the shipment for safety and regulatory compliance. |
| Storage | Ammonium hydrogen sulfate should be stored in a tightly sealed container in a cool, dry, well-ventilated area, away from moisture, heat, and incompatible substances such as strong bases and oxidizers. The storage area should be corrosion-resistant and protected from physical damage. Avoid exposure to humidity, as the chemical is hygroscopic and can absorb moisture from the air. Label containers clearly for safety. |
Applications of Ammonium Hydrogen Sulfate in Industrial ManufacturingAmmonium hydrogen sulfate serves as a specialized intermediate in several targeted industrial sectors. As a direct producer, we maintain strict quality standards to support precise downstream applications. The following sections outline primary markets and detail how our material integrates into advanced manufacturing streams. 1. Catalyst Preparation for Caprolactam ProductionManufacturers apply ammonium hydrogen sulfate in the purification and recombination phases during caprolactam synthesis for nylon 6 production. The material assists in the removal of residual ammonia and neutralization of waste sulfuric acid generated during cyclohexanone oxime hydrolysis. Process engineers adjust dosing rates according to sulfur content in the feedstock and desired purity of intermediate products. Consistent quality is critical to meet high molecular weight polymer standards in downstream nylon spinning operations. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
2. Electrolyte Additive for Metal Surface TreatmentIn metal finishing, ammonium hydrogen sulfate functions as a supporting electrolyte in anodizing, electropolishing, and selective etching. Its ammonium and sulfate ions enhance conductivity, facilitate oxide film formation, and help control pH. Operators monitor and adjust concentration to match varied alloy compositions and thickness specifications for aerospace and electronics clients. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
3. De-NOx Agent in Flue Gas TreatmentThermal power stations and certain industrial boilers use ammonium hydrogen sulfate as a reagent in selective catalytic reduction (SCR) installations for nitrogen oxide (NOx) abatement. The compound reacts to convert NOx into nitrogen and water with high efficiency. Dosing depends on flue gas volume, stack temperature, and online NOx analyzer feedback. Compatible with urea and ammonia slip reduction strategies to help plants achieve regulatory air emission targets. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
4. Analytical Reagent Manufacturing for Laboratory UseProducers of analytical reagents employ ammonium hydrogen sulfate as a calibration and titration standard in analytical chemistry kits. Its predictable behavior in solution, known ionic strength, and compatibility with other sulfate-based titrants ensure measurement consistency. Formulation batches undergo strict traceability and purity validation to comply with globally recognized laboratory requirements. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
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In our plant, batches of ammonium hydrogen sulfate come to life every day under large reaction tanks and systems built for safety and quality. Hands-on, precise adjustments and long experience carry more weight here than mere catalogs of chemical names. Across the plant floor, our team keeps a constant watch over the mix to ensure only the intended compound forms: ammonium hydrogen sulfate, not the regular ammonium sulfate that often gets confusion in the mainstream market.
We start with ammonia and concentrated sulfuric acid, guiding the reaction step by step, where the molar ratio and temperature control determine purity—and mistakes can mean ruined batches. From our earliest years in the chemical business, we’ve seen that keeping everything exact avoids problems downstream for our partners using ammonium hydrogen sulfate in their laboratories or industrial setups. Dust control, hygroscopic properties, and preservation of crystal integrity matter for both performance and storage.
Unlike many products on the shelf that arrive through supply chains of brokers or unnamed refineries, ours comes directly from reactor beds we maintain. It forms as solid, white granules or sometimes as a slightly moist crystalline powder, depending on each order’s requirements. Our technical process and internal quality checks shape the end result more than branding or paperwork. We understand its bitter taste, corrosive potential, and slight sulfur dioxide scent—traits that emerge from careful synthesis, not packaging.
As a chemical producer, we hold tight control over the raw materials and every adjustment on the line. The outcome: ammonium hydrogen sulfate with a single ammonium group per sulfate backbone, chemical formula NH4HSO4. This matters for consistent acidity and reactivity. Mixing errors can yield standard double salt ammonium sulfate, which changes acidity and physical traits.
For our partners in dyeing, etching, and analytics, finicky differences in the sulfate’s form can mean entire process changes. Our daily routines reveal those differences: true ammonium hydrogen sulfate works as an acidic salt with a clear, measurable pH impact. Its acidic function shows up in textile dye baths, where it keeps colorants fixed. The less acid version, ordinary ammonium sulfate, simply fails to do this job. Laboratories come to depend on our strict controls for repeatable results—whether in trace metal analyses or production-scale etching.
Our team spends regular hours cleaning, monitoring, and recalibrating crystallization tanks. Surface residues, incomplete drying or mixing, and subtle impurities alter the product’s grade and shelf-life, issues we address before the bags ever get loaded for delivery. Our years of hands-on production have shown us how temperature, atmosphere, and even shift changes influence outcome. These are the details absent from boardroom descriptions, but central to genuine quality assurance.
Insight from working with industrial partners has taught us where ammonium hydrogen sulfate plays the vital role that no imitation fills. Analytical laboratories prize its strong yet predictable acidity as it helps precipitate or separate specific ions. The result: reduced interference and higher yield in chemical analysis. When textile and wool processors look for a mordant or acidifier, our ammonium hydrogen sulfate holds up to the action of dyes and natural fibers in repeated cycles. The acid value from this salt gives the finished cloth deeper, longer-lasting colors than weaker alternatives.
We’ve supplied this chemical to battery producers and rare earth separators. In electrolytic baths or extraction cycles, its ability to split gently and predictably into ammonia and sulfuric acid means users avoid unpredictable acidity swings and precipitation problems seen with imprecisely made batches or adulterated stock. Many clients have recounted how time spent probing supply chains for cheaper blends almost always ends in unpredictable process upsets. Our direct experience shows that product traceability—from raw ammonia and sulfuric acid to final crystal—brings real value, not just certifications.
In our region, fertilizer producers and mining operations call for ammonium hydrogen sulfate’s unique acidifying and solubilizing power for particular soils or separation tasks. Our technical staff discusses trace impurities, package sizing, and end-use requirements in practical terms, because the real-world results—crop uptake, ore selectivity, chemical yields—matter more than textbook compatibility charts.
The market lumps together several ammonium compounds as if they were interchangeable. Day-to-day at the factory, each behaves differently. Our ammonium hydrogen sulfate provides a strong, single-acid salt derived from partial neutralization of sulfuric acid. Ordinary ammonium sulfate—popular as a fertilizer—offers much milder acidity and very different solubility. Industries that switch between them based solely on price or supply quickly contact us again once they see process failures.
Standard ammonium sulfate, formula (NH4)2SO4, will not control pH in dye baths or metal etching as precisely. It lacks the strong acidic nature that hydrogen sulfate delivers. We’ve worked with engineers and chemists who assumed any ammonium salt would do, only to see poor dye fixation, irregular precipitate formation, or unstable solutions. Each call for technical support reveals the deep utility of the true hydrogen sulfate variant—predictable, consistent reactivity, even with minor changes in temperature or concentration.
We manufacture other downstream products—ammonium persulfate, sodium bisulfate, and complex sulfate blends for mining or chemical purification. Over time, we’ve observed operators try to swap ammonium hydrogen sulfate with sodium hydrogen sulfate to cut costs. The results speak for themselves: sodium-based salts leave unwanted sodium ions that interfere downstream, clog filters, or change precipitation patterns. For laboratories conducting trace-metal or ion-exchange work, this quickly ruins months of work.
Our production journals and client feedback highlight subtle, practical distinctions. Ammonium hydrogen sulfate breaks down into only ammonia and sulfuric acid upon decomposition, so it avoids sodium or potassium contamination. This difference reverberates in high-sensitivity processes: semiconductor cleaning, electronics, high-purity metallurgy. No amount of promotional literature can replace the daily, measured feedback from those who spend months working with various raw materials.
Direct manufacturing means control, traceability, and accountability. We follow every batch from the first drop of acid to the last sealed bag. In contrast, resellers and non-manufacturing traders push forth consolidated or repackaged product, often blended from multiple origins. Our plant retains samples, logs every shift detail, and certifies product only after meeting in-house analytical benchmarks. These benchmarks stem from decades of feedback from actual chemical processes, not only standardized specification sheets.
Handling ammonium hydrogen sulfate demands respect for its properties. Its ability to absorb moisture from the air can limit shelf life or cake in storage, so we manage humidity in our packaging and warehouse areas. We never assume bulk properties match small lab samples: large-scale users face dust control, caking, or loss of flowability, challenges we mitigate through careful drying and granulation technique. We learned early on not to promise flawless free-flowing powders without routine site inspections and customer feedback.
Packaging choices—multi-wall bags, drums, or sacks—stem from end-user needs and the physical quirks discovered during temperature swings or shipping stress. For some clients, we recommend moisture barriers; others require continuous pouring or pneumatic handling. Each adjustment follows practical feedback from years of shipping and storage, not just catalog promises.
Chemical purities, crystal sizes, and moisture levels rest on more than instrument readouts. Our analytical chemists tweak crystallization temperatures and drying protocols during every batch, aiming for repeatable, application-driven results. Impurities like iron, sodium, or chlorides make their way into inferior batches through careless raw material handling or low-grade equipment. Years ago, labs using impure hydrogen sulfate experienced unexpected precipitates or buffer shifts. Our learning curve was fast and sometimes painful; strict controls now protect each lot headed for sensitive laboratory or electronics use.
Many producers publish specification sheets promising “99+% pure” hydrogen sulfate, but few can back the claim with regular analytical reports spanning the full batch process. We’ve invested in stepwise monitoring, with every passing batch inspected for outliers, not just meeting a spreadsheet value. Talk to users downstream, and they’ll describe what happens with product variability they can’t see until too late—a problem we attack by blending experience with technical rigor at every hour of production.
Some of our more experienced plant operators remember variability in earlier years, especially during weather swings, fluctuations in acid supplier quality, or rushing the drying step to meet surge demand. Our standard today sits not in words but in the samples recorded across the production runs, each tied to a sealed archive. Audits state our quality, but it’s the headaches avoided in research labs and manufacturing lines that have grown trust in our ammonium hydrogen sulfate.
Ammonium hydrogen sulfate plays strong roles in specialty metal processing, etching, water treatment resins, and rare earth extraction—fields that require not just chemical product but deep know-how. Direct conversations with metallurgists, textile experts, water process engineers, and analytical chemists guide how we optimize the product for daily operation, not just for the purchase order. Tweaks in particle size, packaging, or handling emerge from years of seeing the end points, not just lab reports.
We’ve seen demand shift as new battery chemistries arise, textile methods change, or trace analysis becomes stricter. Each shift brings requests to adjust dryness, aid flowability, or reduce total trace metals beyond visible levels. These change requests do not come from generic trend reports but from unsolved practical issues on the workshop floor. Decades of production have taught us how to respond, whether through fine-tuning raw acid sources, filtration step upgrades, or advising customers on storage strategies based on local conditions.
Many fertilizer or industrial blending operations use ammonium hydrogen sulfate for its balancing act—adding ammonium nutrients while also sharply lowering pH compared to other salts. Plants or industrial water circuits thus benefit from a more predictable acidifying action, and soil scientists or process engineers contact us for troubleshooting uncommon incompatibilities or residue issues. Our support comes from experience, never from generic support scripts. We know the actual chemistry, not just its paper description.
Direct involvement in ammonium hydrogen sulfate production exposes us to every pitfall and opportunity improvement. Moisture control remains a common need: the salt draws water from humid air, caking during extended storage. Solutions arise from custom packaging, careful warehouse climate management, and ongoing research into coating agents that do not compromise purity. We watch bulk shipments through seasonal changes, tracking caking or clumping and integrating field data into our process.
Another challenge comes from impurities creeping into raw source chemicals. No process stays perfect—acid and ammonia sources can shift profiles due to upstream supply events, plant maintenance, or seasonal factors. We keep backup analytical capacity to intercept unexpected spikes in sodium, iron, or organic contamination; trust from our end users depends on consistent assurance. Investments in detection and staff training keep us fast to catch any deviation.
Shipping also raises hurdles. Ammonium hydrogen sulfate’s acidic, corrosive nature demands strong, sealed bags, careful palletizing, and documentation for every bulk load—especially for overland or maritime freight. In real-world practice, this means more than compliance: we contribute direct feedback to logistics groups on how our chemicals behave after a week in transit between seasons or routes. End users count on us to share firsthand reports, not just shipping compliance statements.
On the innovation side, we actively participate in refining production with industry peers and technical groups. Collaborative forums, technical conferences, and end-user surveys provide real feedback loops missing in sole-specification approaches. Each outreach helps improve drying methods, product purity, or handling steps, feeding back into a more reliable supply chain and stronger user satisfaction.
Clients across the world request custom particle sizes, moisture levels, or impurity control for uses in research, manufacturing, or environmental treatment. These requests do not fit into easy templates, and our flexible production system—developed and improved by daily feedback and on-the-floor problem solving—adapts to genuine, changing needs. That responsiveness emerges from our status as a direct, continuous manufacturer, not from third-party repackaging.
Years of production have impressed on us the need for responsible chemical stewardship. Handling strong acids, ammonia, and the resulting salt involves more than routine compliance. Worker training and environmental monitoring prevent discharges that have previously caused trouble before regulatory tightening. Each production advance we’ve made reflects a lesson learned, whether in air scrubbing, neutralization tank upgrades, or investment in sealed transfer systems.
In today’s climate, end users want assurance on not just technical compliance but actual safety and minimal environmental footprint. Our plant continually upgrades process controls, waste recovery, and emissions monitoring to meet expectations set by both local rules and global partners. We invest in worker safety protections and emergency response rehearsals, rooted in actual plant experience—knowing how accidents occur, and how to genuinely prevent them.
We understand customers need more than a statement on sustainability—they want to know the steps taken in solvent recovery, raw material sourcing, and energy use. We invite audits, provide batch-level disclosures, and remain ready to discuss improvements that can be shared by customer request. This openness helps keep us at the forefront of responsible ammonium hydrogen sulfate production, answering direct queries and resolving issues when they first appear rather than pushing problems downstream.
The final value in ammonium hydrogen sulfate does not rest in a label, a price point, or a data sheet. Our hands-on history with the product, and the feedback from industrial and laboratory users, guides every investment and improvement. Every shipment brings knowledge back from the field—an indicator of whether the product fulfills its intended role across industries.
Ammonium hydrogen sulfate, reliably manufactured at source, serves roles in analysis, textiles, metal processing, and soil science that only the right chemical with exact properties fulfills. Years of learning, improving, and responding to challenges ensure it remains more than just a basic chemical commodity for customers around the globe.