|
HS Code |
858863 |
| Chemicalname | Ammonium Sulfide |
| Chemicalformula | (NH4)2S |
| Molarmass | 68.15 g/mol |
| Appearance | Colorless to yellow crystalline solid or solution |
| Odor | Rotten eggs (due to hydrogen sulfide) |
| Solubilityinwater | Soluble |
| Meltingpoint | Decomposes before melting |
| Density | 0.97 g/cm³ (solution) |
| Casnumber | 12135-76-3 |
| Boilingpoint | Decomposes upon heating |
| Ph | Alkaline in aqueous solution |
| Stability | Unstable; releases toxic gases |
As an accredited Ammonium Sulfide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Ammonium Sulfide, 500 mL, is packaged in a tightly sealed amber glass bottle with hazardous chemical and handling warning labels. |
| Shipping | Ammonium sulfide is shipped as a hazardous material due to its toxicity and flammability. It is transported in secure, tightly sealed containers to prevent leaks and the release of toxic hydrogen sulfide gas. Packaging must comply with national and international regulations, including proper labeling and documentation for dangerous goods. |
| Storage | Ammonium sulfide should be stored in tightly sealed containers made of compatible materials, in a cool, well-ventilated, and dry area away from heat, sparks, and open flames. Keep it away from acids, oxidizers, and moisture. Containers should be clearly labeled and kept out of direct sunlight. Proper ventilation is essential to prevent the buildup of toxic or flammable vapors. |
| Purity 98%: Ammonium Sulfide with 98% purity is used in textile desulfurization processes, where it ensures efficient removal of sulfur compounds.Solution Strength 20%: Ammonium Sulfide 20% solution is used in leather tanning operations, where it enables rapid hair removal from hides.Molecular Weight 68.11 g/mol: Ammonium Sulfide with a molecular weight of 68.11 g/mol is used in chemical synthesis laboratories, where it delivers consistent reactivity for analytical applications.Stability Temperature 25°C: Ammonium Sulfide stable at 25°C is used in semiconductor etching, where it prevents decomposition during precision surface treatment.Low Particle Size <10 µm: Ammonium Sulfide with particle size less than 10 µm is used in catalyst preparation, where it increases active surface area for improved catalytic activity.Reagent Grade: Ammonium Sulfide reagent grade is used in analytical chemistry, where it enables accurate detection of metal ions in solution.Aqueous Solution Form: Ammonium Sulfide in aqueous solution form is used in photographic development, where it achieves uniform toning of silver-based images.Industrial Grade: Ammonium Sulfide industrial grade is used in waste gas scrubbing systems, where it effectively neutralizes acidic gases such as hydrogen sulfide. |
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Here at the plant, Ammonium Sulfide goes from raw material to reliable compound under close watch. Every drum, bottle, or bulk tank starts with ammonia and hydrogen sulfide gases bubbling together in a controlled system. This reaction isn’t just basic chemistry—it’s an exercise in balancing safety, purity, and the demands coming from customers who know its worth. Our primary model for commercial use is (NH4)2S in aqueous solution, made up in concentrations ranging from 20% to 40%. The strength suits industrial, research, and specialty markets. What leaves our reactor holds clear technical agency: predictable, reproducible sulfide, delivered with a spec sheet checked daily by those who work with their hands and eyes, not just spreadsheets.
You learn quickly on this shop floor that choosing the right process for ammonium sulfide means walking a fine line between efficiency and safety. The reaction is exothermic; the gases are toxic and flammable. It has to be a closed system—no room for shortcuts, no time to ignore scrubbers. Years ago, those who ran batches with less ventilation or looser controls ended up regretting it. Now, modernized lines use real-time monitoring for gas leaks and pH shifts, and we demand every operator knows both chemistry and hazard control. Quality itself starts at the source. We’re not only watching concentration but also how much polysulfide content creeps in, as it can lead to slow color changes and unwanted reactivity for downstream customers.
In this business, small differences get amplified. Unlike ammonium bisulfide solutions—which aren’t fully neutralized and have pronounced acidity—ammonium sulfide we prepare offers stronger reducing power. There’s less corrosivity, but a readiness to tie up heavy metals and fix color. Compared to sodium sulfide, ammonium sulfide has a narrower reactivity profile, more suited for selective precipitation without creating hard-to-handle secondary salts.
Our process means customers can count on a transparent yellow, clear, or even colorless solution, depending on order specs and age. Color shifts signal either oxidation or impurities creeping in. Customers who’ve faced unpredictable product from less disciplined outfits always bring up the ‘eggy smell.’ That’s unavoidable with hydrogen sulfide, but fresh ammonium sulfide should present just a sniff, not a punch. We keep each batch under nitrogen to hold back air and light, reducing the risk of polysulfide formation and the darkening that tells you sulfide is leaving solution for good.
Lab workers, refineries, electronics manufacturers, and leather tanners know why they order ammonium sulfide by name. It fits technical demands better where a mild water-soluble sulfide is needed. In analytical labs, it helps separate cations in qualitative analysis by forming specific metal sulfide precipitates. The formula works well because it delivers sulfide ions without dumping sodium or potassium cations into the mix, which can interfere with the detection lines or lead to cloudy mixtures.
Older methods using sodium sulfide risked introducing contamination and raised disposal headaches. The byproducts left behind often required specialized waste handling and drove up costs for schools, water analysis outfits, or industrial chemists trying to keep their processes clean and compliant. With ammonium sulfide, neutralization steps become straightforward—an acidic quench strips the solution back down to harmless ammonium and water, plus elemental sulfur for solid waste separation.
In electronics manufacturing, certain etching and stripping procedures call for ammonium sulfide specifically because it’s less likely to pit or overreact with copper, nickel, and other sensitive metals. We’ve worked directly with plating shops ironing out their mixtures for best finish quality and minimum waste. Our solution’s consistency makes calculations easier; operators can predict reaction progress and yields without wild swings. That matters when you’re running legacy lines that only accept limited deviations—those old machines complain if your solution drifts even a little outside spec.
Manufacturing ammonium sulfide means being honest about hazards, not just glossing over with paperwork. Hydrogen sulfide’s toxicity gets most of the attention—and for good reason. On our site, making ammonium sulfide is a constant safety drill. Gas detectors, forced ventilation, and personal monitors form the backbone of every shift. Before we open any reactor or storage drum for transfer, operators check and recheck for leaks. Any sign of blackening or crust on fittings earns a replacement—even if the accountants squawk over the cost.
Some buyers ask for freshly mixed solutions for this reason: stock held too long degrades. We communicate real shelf life, not “best by” dates drawn from a safety data sheet. If the product oxidizes, it gives off the sulfur smell much more rapidly and shows color shades even on casual inspection. We push customers to think about inventory rotation, offering smaller packs to labs or research customers who can’t use up a drum before it turns.
Beyond direct exposure risks, storage stands out as a real-world challenge. Ammonium sulfide vapors can corrode nearby metals, even eat into shelving and floor coatings if any leaks go undetected. We always recommend keeping containers in cool, well-ventilated places and away from acid storage—mixing the two by mistake can quickly create a hazardous hydrogen sulfide release. For high-turnover users such as tanneries or processing plants, we advise routine checks and supply training materials based on our own internal procedures, not generic advice.
Making ammonium sulfide isn’t about fast throughput alone. Consistency and physical handling shape what leaves our site just as much as reaction stoichiometry. Over-mixing or storing at the wrong temperatures can throw off solution clarity, sometimes making even good product look suspect. Bubbles, crusts, and color shifts point to changes on a molecular level. We invest in lab testing, but we also value floor staff with years of experience who call out problems at a glance. One batch was flagged last season for a subtle yellow hue—turns out an upstream ammonia batch had trace impurities, and staff caught it before shipment.
Requests for custom concentrations come in from specialty chemical and catalyst fabricators. Our line can deliver, but the complexity rises for every percentage tweak above 35%. At these higher strengths, you get more offgassing during storage and higher chances the solution will start to deposit sulfur on container walls. Years working with custom blends taught us to suggest, “Order only what your process runs through in a week." It saves budget and delivers fresher, more dependable product.
Sodium sulfide and ammonium sulfide look close on paper, but their plant-side handling couldn’t be further apart. Sodium sulfide arrives as flakes or pellets—easier to store long-term but much dustier and more caustic in water. Ammonium sulfide comes already blended, so users simply dilute to need and avoid introducing hard sodium ions that stick around in effluents and boilers. We hear from plating and water treatment managers that ammonium-based options help them keep their compliance records cleaner, with easier pH control and lower environmental discharge risk. Where sodium or potassium cations trigger scaling in process equipment or add cost to downstream ion removal, ammonium flushes out with far fewer headaches.
Ammonium bisulfide shows up less often these days except for refinery scrubbing, where a little more acidity and oxidizing tolerance is needed. Compared to that, ammonium sulfide wins out on lower corrosion tendency and easier post-process neutralization. We built our name on consistency and won orders from outfits that tired of unpredictable bisulfide stability. Their crews complained about filter plugging, color drift, and reaction timing. With ammonium sulfide, reactions reach endpoint with fewer surprises, especially in laboratory settings.
From the factory window, we see trucks pull up hauling spent solutions or byproduct drums. Handling those wastes gets easier with an ammonium base. Add acid, and byproducts convert quickly to elemental sulfur, freeing ammonia and driving off any last residual sulfide as a gas under controlled ventilation. Operators can treat wastewater without picking up additional sodium or potassium burdens, helping keep discharge limits in check.
We help clients tailor post-use neutralization steps for whatever regulatory zone they inhabit, delivering real numbers from our own trial waste streams and adjusting recommendations to match their in-house systems. If a customer faces higher-than-allowed trace heavy metals after precipitation with our sulfide, we work batch-by-batch to find optimal pH and temperature conditions. More than once, that’s meant sending technical staff to walk their line, spot-checking reactions, or suggesting tweaks in order of addition to drive out ghost contaminants.
Every year brings stories of supply chain disruptions—broken shipments, raw material interruptions, or transport holds—not to mention wild price jumps from upstream fluctuations in ammonia or refinery gases. We keep stockpiles of base feedstocks and maintain both primary and backup production lines. It means higher operating costs at times, but it’s how we keep contracts fulfilled and buyers supplied even during outages or market turmoil.
We’ve watched competitors cut corners or outsource blends to third parties, risking quality drift or outright mislabeling. Customers who’ve suffered ruined batches or failed analyses from those shortcuts come to our gate asking for fixed specs and clear traceability. Every container we dispatch carries a batch certificate generated from our own site’s QC lab, not a cut-and-paste from a distant wholesaler.
For critical industries like fine chemicals, semiconductors, and environmental labs, the difference means real dollars saved and rework avoided. Our logistics crews know the quirks of shipping ammonium sulfide—temperature swings in transit, regulatory hoops in different countries, and the need for tight packing that resists leakage or gas build-up. We assemble each order based on what actually works in the real world, not just what makes for a nice brochure.
Any company selling a chemical knows the words “specification sheet” or “technical data sheet” pop up in every discussion. But what matters for customers facing real-world variables is the working knowledge our crew brings after years of hands-on manufacturing. When a plating shop’s line failed last summer due to unexpected color, we sent out a team, analyzed both our product and their line’s full chemistry, and found airborne catalytic metals as the culprit. Now, we share application notes with every order, based not on generic best practices but on issues we’ve found and solved ourselves.
We know instructional videos and remote troubleshooting don’t always cut it—troubles run deep in some applications, and what works for one batch can fail for the next with just a small change in water source, equipment age, or air quality. Our technical staff provides field support, structured not as a formality but as an extension of our own troubleshooting process. We log every credible complaint and use it to refine not just our chemistry but also packaging, order size, and delivery schedules.
Regulatory bodies and industry watchdogs change expectations frequently, especially around discharge, worker exposure, and trace contaminant levels. We make it our business to track new rules closely—not only for compliance, but to advise plant managers on practical changes that reduce risk and cost before new fines or shutdowns loom.
We see rising calls for “green chemistry” and circular economy approaches. Our plant is running pilot projects to cut ammonia vapor releases and capture any fugitive hydrogen sulfide for reuse. Waste streams from ammonium sulfide manufacture get directed into precipitation and treatment cells designed to avoid legacy issues—no settling ponds, no dark stains on the concrete. We aim for a process that supports both uptime and peace of mind for those living or working near our facilities.
Audits, both internal and from customers or regulators, prove ongoing vigilance matters. Surprises on monitoring logs lead to retraining or redesign, not excuses. We publicize our incident logs and corrective steps so current and potential buyers understand where we stand: quality backed by transparency and lessons earned from real setbacks.
Decades running this operation gave us more than familiarity with reaction vessels and titration kits. We know ammonium sulfide inside out—from the choice of gaskets that resist tenacious vapors, to the flags raised by just a hint of off-color in a fresh solution. Customers’ confidence builds on the knowledge that we handle not just routine orders but also rush jobs, custom blends, or critical supply runs with the same care given to the plant’s own safety protocols.
What we offer isn’t just the molecule, but the day-to-day expertise of people who know the risks, the quirks, the potential for improvement. We invest in new automation, but never leave out the final human checkpoint for every outbound drum, bottle, or tote.
From raw feedstock sourcing through finished product delivery, our plant’s story is bound up with ammonium sulfide’s role in industry. The compound speaks not only to what chemistry can make, but to how long-term trust and practical problem-solving become part of the package. We don’t trade in mystery or cut corners—what comes through our gates carries proof that good manufacturing yields good results, batch after batch.