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HS Code |
103061 |
| Chemical Name | Ammonium Sulfate |
| Formula | (NH4)2SO4 |
| Appearance | White crystalline solid |
| Nitrogen Content | 21% |
| Sulfur Content | 24% |
| Solubility In Water | Highly soluble |
| Density | 1.77 g/cm3 |
| Molecular Weight | 132.14 g/mol |
| Ph Of 1 Solution | 5.5 - 6.5 |
| Typical Use | Nitrogen and sulfur fertilizer |
| Moisture Content | <1 % |
| Granule Size | 1-3 mm |
| Odor | Odorless |
As an accredited Fertilizer Grade Ammonium Sulfate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 25 kg white polyethylene bag labeled "Fertilizer Grade Ammonium Sulfate," featuring safety icons, batch number, manufacturer details, and storage instructions. |
| Container Loading (20′ FCL) | 20′ FCL container loads 25 MT Fertilizer Grade Ammonium Sulfate, packed in 50 kg bags, palletized or non-palletized as required. |
| Shipping | Fertilizer Grade Ammonium Sulfate is shipped in polyethylene-lined woven bags or bulk containers. It should be kept dry and protected from moisture during transport. The product is non-hazardous, but care must be taken to avoid contamination. Store and ship in cool, well-ventilated areas in accordance with local regulations. |
| Storage | Fertilizer Grade Ammonium Sulfate should be stored in a cool, dry, and well-ventilated area away from moisture and incompatible substances. Keep the product in tightly sealed, labeled containers on pallets, away from direct sunlight and sources of heat. Avoid storage near strong acids, alkalis, or combustible materials to prevent hazardous reactions. Ensure easy access for inspection and handling. |
| Shelf Life | Fertilizer Grade Ammonium Sulfate has an indefinite shelf life if stored in a cool, dry, well-ventilated area, avoiding moisture. |
Applications of Fertilizer Grade Ammonium Sulfate in Industrial ManufacturingAs a direct processor and producer, we support large-scale industries that rely on fertilizer grade ammonium sulfate as a critical nitrogen and sulfur source. We supply validated quality material for application scenarios where precise formulation, compliance, and consistent performance directly influence core processes and end-product attributes. 1. Nitrogen Fertilizer Compounds for AgricultureAgriculture producers incorporate ammonium sulfate into compound and blended fertilizers primarily for its efficient, chloride-free nitrogen supply and sulfur content. The formulation targets specific soil requirements, crop types, and regional regulations demanding nitrification control and minimized nutrient leaching during growing seasons. Integrating ammonium sulfate enables exact customization based on local agronomic needs and soil testing data, especially where sulfur deficiency impacts yield or where regulatory nitrate limits apply. Industry compliance standards
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2. Caprolactam By-Product RecoveryCaprolactam manufacturers isolate ammonium sulfate as an intentional co-product during the synthesis of nylon precursors. The quality, purity, and controlled crystallization process determine its eligibility for downstream agricultural or industrial use; any deviation can compromise regulatory acceptance and value chain integration. Strict material management protocols comply with both chemical production and fertilizer end-use certifications to maximize sustainable recovery and minimize process waste. Industry compliance standards
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3. Industrial Mushroom Cultivation SubstratesCommercial mushroom growers rely on ammonium sulfate as a precise nitrogen and sulfur supplement in formulated compost substrates for Agaricus bisporus and other edible species. The material supports balanced microbial activity during composting, promotes mycelium growth, and prevents substrate exhaustion, all while adhering to strict contaminant limits that could otherwise jeopardize food safety certifications and yield consistency. Industry compliance standards
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4. Leather Tanning and Hide ProcessingAmmonium sulfate plays an established role in industrial leather processing, particularly in the dehairing and bating stages. The material enables controlled alkalinity reduction and aids in breaking down proteins in conjunction with enzymes. Its purity and grade directly influence finished leather quality and compliance with international product safety and effluent standards, given concerns about residual nitrogen and downstream water treatment demands. Industry compliance standards
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5. Food-Grade Yeast and Fermentation ProductionFood ingredient manufacturers utilize ammonium sulfate as a regulated nitrogen and sulfur source in the commercial propagation of baker’s yeast, brewing yeast, and certain food-grade fermentative processes. The additive acts as a critical nutrient for yeast growth, but is tightly controlled due to strict residue and contaminant limits imposed by global food safety regulations. The adjustment of loading rates must account for strain-specific uptake, pH control, and completed product purity, with exclusion in organic-certified processes. Industry compliance standards
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6. Flame Retardant Additive in Industrial MaterialsMaterial manufacturers in the flame retardant sector select ammonium sulfate as a component to enhance fire resistance in engineered panels, insulation, and treated cellulosic products. The addition exploits the endothermic decomposition and ammonia release to inhibit ignition and spread of fire, subject to region-specific fire safety and emissions criteria. The effectiveness and loading rate are purpose-fit to the matrix material and target performance ratings, and requires strict attention to material compatibility and processing moisture control. Industry compliance standards
Typical usage ratio
Downstream process integration
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Competitive Fertilizer Grade Ammonium Sulfate prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8618136850665 or mail to sales4@ascent-chem.com.
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Tel: +8618136850665
Email: sales4@ascent-chem.com
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Ammonium sulfate entered the market straight from our own reactors decades ago. Back then, growers needed reliable nitrogen and sulfur in one simple, manageable product. The formula never strayed far: pure (NH4)2SO4, made the same way in our facilities year after year, now with modern controls to ensure every bag meets the farmer’s expectations. We saw results early—the soil responded well, plants stood taller, leaves stayed greener. Our manufacturing teams put in long weeks to keep it coming, scaling up as demand grew.
Nitrogen content comes in consistently at 21 percent by weight, sulfur at 24 percent. There’s no guessing or fluctuating between loads. That reliable spec comes from tight control at each stage: known reactants, closed handling, careful drying, and screening. This number matters to our customers. Out in the field, too little nitrogen stunts growth, while crops short on sulfur show pale, weak tissue. Some fertilizers blend extras, but we stick close to the essential form, with no fillers to dilute performance.
From our team’s perspective, “fertilizer grade” isn’t a label that gets slapped on without substance. Granules must flow smoothly through spreaders—no dust, no stickiness, no broken lumps to clog the chute. Those details are not afterthoughts for us. Workers run quality checks every shift; samples go through moisture tests, particle analysis, and disintegration trials in tough conditions. Temperatures, humidity, and weather during storage affect flow and handling, so we design process steps with the end user in mind.
Our standard grade granule size typically hovers around 2-4 millimeters. Larger chunks tend to scatter unevenly and break down more slowly in the soil. Finer powder can cake or blow away. Farmers and their equipment require predictability; even, dry granules mean even application—nothing wasted in the wind or settling at the bottom of the hopper.
Every season brings uncertainty: rain, wind, swings in commodity prices. Still, fields need nutrients delivered without fuss. Our ammonium sulfate finds heavy use in row crops such as corn, wheat, barley, and rice, and specialty markets like vegetables and turf. Because the nitrogen is present as ammonium, it resists leaching in most soils better than nitrate forms, and seedlings capture it in early stages. Sulfur, often overlooked, turns up as a limiting factor on many farms—especially where past fertilizer practices relied only on urea or ammonium nitrate. We’ve watched our customers push yields up by closing that sulfur gap, and fields show stronger color and more robust stalks through the growing season.
Application rates vary by region and by crop type, but our agronomists commonly recommend 100-200 kg per hectare. Some operations apply it pre-plant, mixing with phosphates, while others split their feeding between planting and side-dressing. Liquid foliar sprays use a different form; our facility focuses on reliable, granular release that matches what large-acreage operations demand. We field questions every year from first-timers: “Will it mix with other products?” Yes, it blends directly into NPK formulas and goes into most dealer bins with no issues. Farmers want to keep things simple—one reliable input can remove a lot of headaches.
A manufacturer’s eye picks up details others miss. Urea may dominate the nitrogen fertilizer market with its punchy 46 percent N, but we see the tradeoffs. Urea can volatilize—gas off as ammonia—if left on the soil surface, especially in warm, damp spring conditions. We hear about those losses from customers every year; fields that look good after spreading, then fade as nitrogen escapes to the air. Ammonium sulfate wins on this front: it holds its nitrogen far better, particularly in acid or neutral pH soils. For calcareous ground, we do remind growers about possible soil pH drops, but for much of the agricultural belt, ammonium sulfate results in less wasted dollar and a steadier nitrogen supply.
Sulfur content shapes this product’s niche. Other nitrogen fertilizers—ammonium nitrate, calcium ammonium nitrate, and plain urea—deliver plenty of N, but force growers to find supplemental sulfur elsewhere if their soils or crops need it. With our process, one application satisfies both requirements. The sulfate form offers quick plant uptake; there’s no liming material to buffer or dilute. This streamlines logistics on large farms, where truckloads must be scheduled precisely and mixing errors drive up costs.
Cost and environmental impact also attract scrutiny. Our operation recycles process heat, and scrubbers on stacks cut ammonia release right from the plant. We participate in regional nutrient stewardship initiatives and see a role for ammonium sulfate in minimizing run-off. Applied at responsible rates, it breaks down completely, leaving little environmental baggage if well managed. High cost isn’t a barrier for most, given the dual nutrient delivery, and growers find the price per unit S or combined N+S often beats two separate products.
Every batch starts in the reactor tanks. We combine ammonia gas and sulfuric acid under strict temperature and pressure limits, drawing on years of in-house knowledge. Keeping the reaction even—not too hot, not too cold—avoids over-crystallization or sticking that would spoil a run. Our plant workers keep close tabs on density gauges and pH indicators. After crystallization comes drying and cooling. Moisture is a constant battle. Left unchecked, it leads to caking during transit or storage, making the product hard for farmers to handle. Every year, we invest in airflow improvements, better screening systems, and more durable conveyance lines.
Materials science changes drive small but important gains. Stainless steel liners on our mixing paddles last longer than plain steel. Upgraded filter media reduce downtime. Teams swap notes between shifts; lessons from a rough production day last season turn into process tweaks this year. By sticking with proven improvements and rigorously checking each outgoing load, we keep complaints—like lumps, dust, or packing tears—to a minimum. We do not chase the lowest price with shortcuts that impact granule quality, and our long-time clients know the difference.
Farmers keep us honest. They notice everything in the field, and don’t mince words if something’s off in a shipment. One batch with too much fine material last year led us to adjust our sieving timings. Customers in humid regions asked about packaging upgrades; this year, we rolled out double-walled, moisture-resistant bags for high-risk climates. When operators dropped by to ask about cleaning clog-prone spreaders, we walked them through on-farm troubleshooting. Every issue reported feeds directly to our team meetings.
Distributors and co-ops run their own tests on our product—pouring out bags, running blends, comparing product shelf life against competition. We invite them to the plant every spring to see lines running, check samples, and leave with full documentation. Some have been with us for a decade or more; their input shapes our ongoing upgrades just as much as regulatory inspection. For new users, we run regular clinics and provide straightforward mixing recommendations, drawn from actual field testing—not just sales brochures.
Every season adds new pressures to the manufacturing floor. Fertilizer prices swing with global energy and commodity prices, and customers expect us to hold quality while trimming waste. On-site engineers work with supply chain teams to lock down reliable ammonia and sulfuric acid sourcing. Disruptions—natural disasters, shipping delays, or regulatory changes—demand quick thinking. Flexibility makes a difference; if our bulk tanks run low, our operators work overtime or shift production to ensure nothing falls short.
Compliance grows ever more complex. We keep a full in-house team steering safety, environmental monitoring, and batch traceability—EPA, OSHA, ISO, our compliance wall fills up with colored tags and certificates. Modern process controls allow instant tracking; every lot can be traced back to raw ammonia and acid shipments. On the floor, sensors pick up leaks early, and shut-offs trigger if abnormal readings arise. Customers receive documentation with every delivery—moisture content, dust fraction, granule size, and handling instructions—so nothing gets missed in translation from our plant to their spreader.
Farmland shifts constantly. Old recommendations for fertilization don’t always fit, especially as crops intensify and harvests speed up. Many regions now see sulfur deficiencies where past industrial fallout once delivered it by accident. Crops require sulfur just as much as nitrogen, and the wrong input can lead to stagnation. Ammonium sulfate stays in demand for this reason, especially where environmental rules restrict over-application of single-nutrient sources.
Corn growers report improved color and more vigorous early season growth after switching to our granules over single-nutrient nitrogen sources. Rice and wheat fields benefit from both the rapid sulfur availability and the lower nitrogen loss, especially in water-logged areas where urea doesn’t stick around long enough. Vegetable and fruit producers like the predictability: one application improves not only growth but also quality of produce—firmer stalks, brighter leaves, greater resilience to short dry spells.
Growers push for custom solutions. We work with blenders around the clock, sending bulk product to integrate into NPK mixes. Our product plays well with phosphate or potash sources. The absence of lime makes it easier for nutritionists to balance pH effects in finished formulas. As each region looks for the right fit, we run pilot-scale blends to test for compatibility issues—never assuming that one size works everywhere, but never straying from a focus on reliability.
Between crop types, geography, and application methods, flexibility makes a difference. Broadacre row-crop growers look for spreader-friendly granules, while orchard and greenhouse operators may call for smaller quantities and different packaging. We switch up output shifts to meet both needs—bulk tankers for the co-ops, precision-filled bags for specialty users. Expanded warehousing reduces delivery time, cutting down on unplanned downtime at the farm. Local supply means less risk of product breaking down in transit, especially in rainy or humid seasons.
Every fertilizer choice comes with its pluses and minuses. In our experience, the main point of difference lies in balance—reliable nitrogen and sulfur, no add-ons or hidden charges. Ammonium nitrate delivers a quick N hit but lacks sulfur. Urea’s N content remains unmatched by sheer percentage, but its losses during volatile spring days reduce real-world effectiveness. Sulfur-coated urea and specialty blends improve matters, but increase handling complexity and often bump up costs. Our product brings certainty: two nutrients, no byproducts.
For direct soil application, ammonium sulfate works especially well in acid to neutral pH zones. On high pH soils, repeated use can contribute to acidification, requiring pH balancing over time. We run workshops with customers dealing with this challenge, addressing it with tailored recommendations and proper liming regimes. Farmers take value from this transparency—they want honest advice, not marketing spins. In areas prone to heavy rainfall, ammonium sulfate’s low risk of nitrogen leaching makes it a safer choice than nitrate-based materials, especially for shallow-rooted crops or sandy soils.
We cannot ignore mounting pressure to serve not just yield but soil health. Ammonium sulfate, applied thoughtfully, delivers nutrients that drive both productivity and environmental care. Our plant now uses modern emissions controls to sharply reduce process losses, both safeguarding our team and meeting ever-tightening legal standards. By working directly with growers to refine application timing and rate, and by sharing lessons collected across fields and regions, we help reduce unnecessary run-off and excess.
Placing precision and stewardship above short-term savings pays off. By investing in upgrades—more accurate blending, better product tracking, improved logistics—our team closes gaps before they grow. Local trials keep us ahead; we run test plots beside commercial operations, measuring nutrient uptake and product breakdown in real time instead of relying on textbook assumptions. This learning cycle never ends, and our daily operations reflect a real respect for the land and those who work it.
Years of feedback and in-soil testing built the backbone of our ammonium sulfate process. Farmers remind us every harvest: yield and crop quality get judged by what leaves the gate, not just numbers on a spec sheet. When a drought hits or an unexpected cold snap slows plant growth, the resiliency of balanced nutrition proves itself. In our eyes, every successful field trial means another season of lessons, another reason to refine both our product and our service.
Tough seasons test the value of what we’ve built at the plant. High-purity, clean granules—delivered on time, season after season—let growers plan with confidence. Bumper crop years build loyalty, but it’s the hard years that separate fair-weather suppliers from those willing to stand behind every batch. Our ammonium sulfate serves both today’s high-tech equipment and old reliable spreaders that farmers refurbish season after season. Consistency, safety, and open lines of communication built our customer base and keep us moving forward.
Making fertilizer is not a business where anyone can coast. The margin between good and great comes down to careful production, attentive service, and regular reality checks in the field. Our ammonium sulfate remains in high demand not because of a marketing push, but because season after season, field to field, it just keeps working the way it should. We continue making the best granules we can, making tweaks every year, and listening closely to every farm, every distributor, and every operator along the way. No corners cut—just long days, experienced teams, and the same drive for honest results that started us off years ago.
