Ammonium Sulphate

    • Product Name: Ammonium Sulphate
    • Chemical Name (IUPAC): diammonium sulfate
    • CAS No.: 7783-20-2
    • Chemical Formula: (NH4)2SO4
    • Form/Physical State: Solid
    • Factroy Site: No. 1417 Dianchi Road, Xishan District, Kunming City, Yunnan Province, China
    • Price Inquiry: sales3@ascent-chem.com
    • Manufacturer: Yunnan Yuntianhua Co., Ltd.
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    Specifications

    HS Code

    823106

    Chemical Name Ammonium Sulphate
    Chemical Formula (NH4)2SO4
    Molar Mass 132.14 g/mol
    Appearance White crystalline solid
    Solubility In Water Highly soluble
    Density 1.77 g/cm3
    Melting Point 235 to 280°C (decomposes)
    Ph Value 5.5 (5% solution)
    Odor Odorless
    Common Uses Fertilizer, food additive, laboratory reagent
    Cas Number 7783-20-2

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

    Application of Ammonium Sulphate

    Purity 99%: Ammonium Sulphate purity 99% is used in fertilizer manufacturing, where it ensures high nitrogen delivery and crop yield enhancement.

    Granular Form: Ammonium Sulphate granular form is used in large-scale agriculture, where it provides uniform nutrient distribution and improved soil conditioning.

    Water Solubility: Ammonium Sulphate high water solubility is used in irrigation systems, where it allows rapid nutrient absorption by crops.

    Low Moisture Content: Ammonium Sulphate low moisture content is used in fertilizer blending operations, where it minimizes caking and improves product shelf life.

    Micronized Particle Size: Ammonium Sulphate micronized particle size is used in foliar spraying applications, where it enables efficient uptake and reduces application residue.

    Stability Temperature 235°C: Ammonium Sulphate stability temperature 235°C is used in industrial processes, where it maintains structural integrity during high-temperature operations.

    Free-Flowing Grade: Ammonium Sulphate free-flowing grade is used in automated fertilizer dispensing systems, where it ensures accurate dosing and reduces equipment blockages.

    Biuret-Free: Ammonium Sulphate biuret-free specification is used in sensitive crop feeds, where it prevents phytotoxicity and supports healthy seedling growth.

    Low Heavy Metal Content: Ammonium Sulphate low heavy metal content is used in certified organic farming, where it protects soil and crop safety standards.

    Crystal Purity: Ammonium Sulphate high crystal purity is used in pharmaceutical excipient formulations, where it provides consistent performance and meets regulatory compliance.

    Packing & Storage
    Packing Ammonium Sulphate is packaged in 25 kg white woven polypropylene bags, clearly labeled with product name, manufacturer, and safety information.
    Container Loading (20′ FCL) Container Loading (20′ FCL) for Ammonium Sulphate: typically 25-27 metric tons packed in 50kg bags on pallets or bulk in container.
    Shipping Ammonium sulphate is shipped in well-sealed, moisture-resistant bags or bulk containers, clearly labeled and stored in cool, dry conditions. It is classified as non-hazardous but must be kept away from incompatible substances and sources of ignition. During transport, it should be securely loaded to prevent spillage or contamination.
    Storage Ammonium sulphate should be stored in a cool, dry, and well-ventilated area, away from moisture and incompatible substances such as strong oxidizers. The storage area should be equipped with suitable containers, tightly sealed to prevent absorption of humidity and contamination. Avoid storing near strong acids or alkaline substances. Clearly label containers and keep them off the ground to minimize contact with water.
    Shelf Life Ammonium sulphate has an indefinite shelf life if stored in a cool, dry place, tightly sealed, and away from moisture.
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    More Introduction

    Ammonium Sulphate: A Cornerstone for Crop Nutrition and Industrial Reliability

    Shaping Fertilizer Standards through Hands-On Manufacturing

    Among the many fertilizers travelling between farm and field, ammonium sulphate remains a proven performer, valued for its reliable nitrogen content and clear sulfur contribution. Over our decades running reaction tanks and crystallization lines, we’ve seen first-hand how critical purity, granule consistency, and storage stability become after each bag leaves our gates. Without chemical shortcuts or fillers, our production yields a clean white crystalline material, available as granular and powder models, each tailored by the reality of practical field use.

    Our granular ammonium sulphate, with a typical nitrogen analysis of 21% and sulfate sulfur at 24%, shows resilience to caking and loss in bulk storage. Farmers often reach for this grade when they want an easy-to-handle fertilizer that sets well in both mechanical spreaders and broadcast applications. The spherical granules flow without sticking and respond well to changing humidity — not every fertilizer can face a muggy warehouse in mid-July and still pour evenly six months later. For those working with older equipment or seeking foliar feeds, powdered forms dissolve easily, reducing downtime during peak application windows.

    Field Experience: Why Growers Keep Returning to Ammonium Sulphate

    Our agronomists and plant operators walk corn rows, orchard blocks, and cotton fields with growers each year. We know the direct way ammonium sulphate feeds crops without over-complicating nutrient management. Unlike urea, which volatilizes easily on alkaline soils, ammonium sulphate’s nitrogen arrives in a stable ammonium form, less prone to leaching or evaporation. This matters most where water is scarce or costly. Sulfur drives protein synthesis and chlorophyll formation, but not every nitrogen fertilizer gives this key element. Our product delivers both, supporting high-protein wheat, oil-rich canola, and rice in clayey paddies hungry for a steady nutrient supply.

    No single fertilizer fits every agronomic map. Still, growers facing sulfur-deficient soils—common in rainier climates or in fields long relied upon for grain production—learn quickly that switching to pure ammonium sulphate can show a difference in leaf color, stand vigor, and eventual yield. Over-application won’t spike soil acidity as rapidly as some alternatives, but precision matters; we encourage regular soil testing and review lessons with partners to keep usage optimal.

    Practical Differences from Other Nitrogen Fertilizers

    Ammonium sulphate enters some of the harshest conditions that fertilizer will meet: highly alkaline soils, heavy clay, and wet field margins where other ammonium and nitrate sources runoff or escape as gas. Side-by-side with ammonium nitrate or urea, customers see our granules supplying both nutrients steadily, without the pronounced volatility and storage risks that come with higher nitrate-based products. In years with wet springs, growers using urea often raise concerns about popping nitrogen loss; ammonium sulphate holds tight, releasing nutrients even with fluctuating soil moisture.

    On the industrial side, our experience with pH adjustment and yeast fermentation reveals why ammonium sulphate often outpaces more concentrated or cost-focused products. In both food-processing and industrial fermentations, predictable ammonium content and absence of impurities matter more than headline percentages. That is the outcome of careful vessel cleaning, reagent tracking, and physical separation every shift inside our plant.

    Managing Environmental Stewardship with Every Batch

    Efficient fertilizer use now stands front-and-center as water quality regulators and local communities push for sustainable farming. Two generations ago, few considered sulfur deficiency or nitrogen leaching. These days, we factor runoff control into every delivery. By producing ammonium sulphate with consistent solubility and particle size, we reduce uneven spread patterns and minimize the risk of losses in high-rainfall areas. The ammonium form holds to soil exchange sites, keeping nitrogen available for uptake and less likely to wash away during irrigation or spring storms.

    We’ve worked with university field trials to dial in how our product performs under varied climates. The clear sulfur content in every batch fits into sulfur budgeting tools for both conventional and modern no-till systems. We know that excessive inputs contribute to algal blooms and groundwater issues. A predictable fertilizer—applied with an eye on rates and timing—becomes part of the solution, not the problem.

    Clear Advantages in Industrial and Food Production

    Not every facility using ammonium sulphate cares about spreader performance. In yeast production, metal finishing, and other chemical processes, purity and batch-to-batch uniformity drive efficiency. As a manufacturer, we track trace contaminants daily, using multiple in-house and third-party controls while storing raw materials under cover. Fermentation plants using our ammonium sulphate report stable growth and reduced risk of side reactions—something not always delivered by by-product or imported material with variable inputs.

    We’ve supported customers building pharmaceutical intermediates where off-odors, dust, or trace metals can spoil a batch. Slight deviations, whether caused by incomplete reactions or environmental contamination, become costly. Our process focuses on meeting these high bars for both color and purity. Granular or powdered versions function well in buffer production, textile treatment, and specialty cleaning applications, fitting the needs of batch reactors or continuous feed lines.

    Fieldwork with Agronomists: Decoding Crop Responses

    Decades working side-by-side with seed retailers and agronomists keep us grounded in what matters outside the factory fence. Crops show the difference under the eyes of growers tracking leaf color change, tiller counts, and protein tests. Over-application, especially where soils already trend acidic, may demand added lime or adjusted rotations. Our technical team reviews field data to find the right blend of nitrogen and sulfur for each regional practice. Where canola or oilseed rape dominates, soils pull down sulfur quickly, making the match between ammonium sulphate and these crops unmistakable.

    Working across regional climates teaches us that one-size-fits-all claims serve nobody. In low-pH soils, applying too much ammonium sulphate without balancing potassium or magnesium can show up in weak stalks or thin leaf tissue. We encourage customers to use split applications, especially on sandy ground where leaching always presents a risk. This stepwise feeding pattern delivers steady crop growth, drawing out each field’s yield potential while preventing unnecessary inputs.

    Improvement by Listening to Feedback and Monitoring Trends

    Manufacturing ammonium sulphate puts us face-to-face with changing industry pressures. Natural gas price swings, trade patterns, and new precision agriculture tools send ripples through both pricing and expectation. We attend meetings with cooperatives and logistics partners to gauge demand and plan inventory in advance, reducing the risk of bottlenecks at planting time.

    Feedback from customers has directly reshaped our screening and granulation stages. Early on, farmers reported trouble with dust or uneven spreading on windy days, prompting us to overhaul granulator designs for a denser end product. Industrial buyers wanted assurance on chloride content or batch traceability, so we invested in updated testing equipment and record-keeping systems. This cycle, from reaction vessel to field edge, keeps our ammonium sulphate both relevant and trusted across a shifting marketplace.

    Connecting to Food Security and Supply Chain Consistency

    Behind nearly every loaf of bread or bowl of rice sits a supply chain where basic crop nutrition starts with decisions made at the chemical plant. Our ammonium sulphate anchors fertilizer programs that stretch from large-scale agribusinesses to regional cooperatives and family-run operations. With global feed and food markets under strain, consistency in both nutrient delivery and logistics provides some predictability in a rapidly changing world.

    Not all markets prefer straight product. Some buyers require blends for easier application, and others ask for fortified or coated variants for slow-release needs. Throughout this adaptation, the foundation remains the same: high-purity ammonium sulphate, with clear records on each batch and delivery. This process ensures that, whether blended or broadcast directly, users get the nitrogen and sulfur expected, and few surprises at market weigh-in time.

    Comparing Ammonium Sulphate with Blended and Bulk-Handled Nutrients

    Granular ammonium sulphate often stands beside blended NPK formulations in distributor warehouses. While complex blends add other elements, pure ammonium sulphate plays a unique role. No other single-source nitrogen fertilizer supplies this level of plant-accessible sulfur without a slow dissolution rate or unpredictable nutrient release. Handling bulk loads on the manufacturing floor has shown us the problems that blended products can face: dust separation, uneven distribution, and variable nutrient content at bagging. By starting with a reliable, consistently sized granule, both plant operators and farmers simplify mix uniformity concerns.

    Bulk-handling logistics for ammonium sulphate also shift according to region. Haulers tasked with moving product in humid zones see granules flow without clumping, while those working with powders appreciate the easy solubility during offload and slurry preparation. The experience of seeing these loads pass through ports, rail sidings, and truck bins, affirms the value in strong granule integrity and minimal dust content. Low-quality material, sometimes sourced from low-cost by-products, tends to sit longer and block equipment; our process focuses deliberately on crystallization control and frequent product rotation.

    Simplifying Regulatory Compliance and Traceability

    Our operations are built around maintaining clear records and practicing responsible stewardship. Raw material sources get documented thoroughly, and process adjustments trace back to batch-level logs. This tracking supports everything from compliance audits to customer inquiries about certification programs, organic compatibility, or environmental reporting. Ongoing investments in both lab instrumentation and digital systems make product recall or out-of-spec events rare and well-managed.

    Besides serving farms and factories, ammonium sulphate heads to municipal wastewater treatment plants, where ammonium ions support biological nutrient removal processes. Facilities demand certainty on contaminant levels, as variations can disturb microbial stability. Providing this reassurance depends on a reliable in-house lab and routine calibration. These unseen layers of assurance—built up through experience and refinement—make the difference in both regulatory compliance and long-term customer retention.

    Applying Lessons Learned Across Global and Regional Markets

    Export relationships force us to adapt both packaging and specifications. Certain markets prefer large-bagged materials, while others require bulk containers. Humidity tolerance, dust content, and caking resistance become critical in climates far different from where we calibrate production equipment. We engage closely with regional partners to understand their challenges, drawing from direct shipping experience to refine both product form and protective measures.

    Learning from past shipping challenges, our teams modified pallet designs and bagging lines to deal with tropical port delays and bumpy inland roads. We have found that packaged ammonium sulphate travels more reliably than bulk alternatives during monsoon seasons, largely because of product conditioning and on-site testing before dispatch. It’s this cycle of production, feedback, adaptation, and customer engagement that defines the real-world value of any industrial fertilizer.

    Supporting Agricultural Partnerships and Training

    Supplying ammonium sulphate goes beyond filling orders. Our field staff work directly with dealer networks, agricultural extension agents, and producers to clarify application rates, timing, and integration with wider fertilization plans. Too often, well-intentioned but poorly informed schedules lead to overuse or nutrient imbalances in mixed cropping systems. Routine engagement—sometimes through workshops and on-farm demonstrations—offers the most practical insight, allowing new users to match inputs closely to field needs.

    In certain regions, sulfur deficiencies remain underdiagnosed, often misattributed to other causes of yellowing or slow growth. By tracing leaf tissue analysis to fertilizer history, our team helps crop advisors build practical models, guiding adjustments to nitrogen and sulfur ratios across different crop rotations, from cereals to vegetables. This boots-on-the-ground advice supports higher yields, improved protein content, and reduced input waste—connecting manufacturing realities directly to better agricultural outcomes.

    Ensuring a Reliable Supply during Turbulence

    Ammonium sulphate production cycles reflect a broader industrial rhythm, shaped by both market pressures and long-term strategy. During recent logistics crises and global uncertainty, we saw firsthand the consequences of delayed shipments and inconsistent quality from less-experienced operators. Plants reliant on unreliable sources scrambled for substitutes, sometimes settling for lower-grade materials that clogged equipment and failed to meet application timetables.

    Anticipating these disruptions, we adapted inventory buffers, accelerated maintenance projects in slack seasons, and kept tight control over supplier relationships. Our teams coordinate deeply with customers months ahead of peak demand, putting contingency batches in place and streamlining outbound flows. Reliable production and shipment ensure that fields receive timely nutrients and industrial processes continue running without unnecessary downtime.

    Continuous Improvement in Manufacturing and Application

    Experience has shown us that every facility run, every batch produced, brings a new lesson for improving quality and consistency. Regular investments in process control systems, new sieving technologies, and dust-management infrastructure keep production efficient and output predictable across seasons. The pursuit of these operational minima—less downtime, minimal off-spec output, fewer product returns—brings a level of confidence to both us and our customers.

    Sustainability is no longer an afterthought. By focusing on efficient resource use, minimizing emissions, and reclaiming process by-products where possible, we close the loop between industrial production and environmental impact. Our work doesn’t finish at the factory; ongoing research supports new application technologies, studies improved plant uptake, and fosters dialogue with sustainability certification bodies. Field experience with slow-release coatings, integration into variable-rate application maps, and innovation in packaging further reduce losses and optimize value for both grower and environment.