HS Code | 331705 |
| Chemical Name | Magnesium Sulphate |
| Chemical Formula | MgSO4 |
| Molecular Weight | 120.37 g/mol |
| Appearance | White crystalline solid |
| Solubility In Water | Highly soluble |
| Melting Point | 1124°C (anhydrous) |
| Boiling Point | N/A (decomposes) |
| Density | 2.66 g/cm3 (anhydrous) |
| Odor | Odorless |
| Ph Of Solution | 5.5-7.0 (5% solution) |
| Cas Number | 7487-88-9 |
As an accredited Magnesium Sulphate factory,we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging is a white,durable plastic bag labeled "Magnesium Sulphate, 25 kg," with clear hazard and handling instructions printed in blue. |
| Container Loading (20′ FCL) | Magnesium Sulphate is typically loaded in 20′ FCL using 25kg or 50kg bags,safely palletized or stacked for export. |
| Shipping | Magnesium sulphate is shipped in tightly sealed containers,such as drums or bags,to prevent moisture absorption. It should be stored in a cool,dry,well-ventilated area,away from incompatible materials. Proper labeling and handling are essential during transportation to comply with safety regulations. It is not classified as a hazardous material. |
| Storage | Magnesium sulphate should be stored in a cool,dry,and well-ventilated area,away from moisture,heat,and incompatible substances. Keep the container tightly closed and properly labeled. Avoid exposure to direct sunlight and strong acids. Store at room temperature,in a corrosion-resistant container,and prevent spillage to ensure product stability and safety. Keep out of reach of children. |
| Shelf Life | Magnesium sulphate has a shelf life of about 2–3 years when stored in a cool,dry,and tightly sealed container. |
Purity 99%:Magnesium Sulphate with 99% purity is used in agricultural fertilizers,where enhanced nutrient uptake efficiency is achieved in crops. Particle Size 50 microns:Magnesium Sulphate with a particle size of 50 microns is used in foliar sprays,where rapid dissolution and leaf absorption are provided. Anhydrous Form:Magnesium Sulphate in anhydrous form is used in industrial drying agents,where superior moisture absorption is ensured. Stability Temperature 300°C:Magnesium Sulphate with a stability temperature of 300°C is used in chemical synthesis processes,where high-temperature resistance allows consistent reaction conditions. Pharmaceutical Grade:Magnesium Sulphate of pharmaceutical grade is used in intravenous solutions,where stringent purity controls enable safe patient administration. Solubility 710 g/L at 20°C:Magnesium Sulphate with a solubility of 710 g/L at 20°C is used in hydroponic nutrient solutions,where complete dissolution prevents precipitate formation. Fine Granular Form:Magnesium Sulphate in fine granular form is used in bath salt production,where rapid dispersion in water increases end-user comfort. Melting Point 1124°C:Magnesium Sulphate with a melting point of 1124°C is used in flame retardant additives,where high thermal stability enhances fire resistance. |
Competitive Magnesium Sulphate prices that fit your budget—flexible terms and customized quotes for every order.
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At our manufacturing site,magnesium sulphate isn’t just another product rolling off the belt. Every batch tells a story about where it comes from,how closely our operators manage the reaction temperature,how the raw materials arrive,what water profile we start with,and how long we allow crystals the proper time to form. These are the unseen details that shape real product quality,far beyond a technical specification or a certificate. We produce magnesium sulphate in several grades and models:Heptahydrate (the familiar Epsom salt with 7 water molecules),Monohydrate,and Anhydrous forms. Our heptahydrate suits agriculture,textiles,and pharmaceuticals. Monohydrate and Anhydrous remain in highest demand for industrial processes. By practically living with these processes for decades,we have learned when magnesium sulphate matters,it’s the transparent purity,the absence of heavy metals,the distinct crystal size,and how reliably it dissolves,that separates our material from bargain varieties.
Many think all magnesium sulphate sources work the same,but our experience shows otherwise. We’ve heard from glass manufacturers whose melters clog because their supplier didn’t control for insoluble residue. Brewers and food producers call us when they encounter off-notes due to trace contaminants. In medicine,even tiny excesses in heavy metals ruin a batch. We build our process around clean,food-grade inputs and constantly monitor for iron,lead,arsenic,and chlorine traces,using real-time analysis,not just monthly snapshots. For the fertilizer market,the biggest ask is consistent granule size for uniform application and zero dust. With our own reactors and drying lines,we can confidently supply fine,medium,or coarse crystals,so soil dispersal is even,and spreaders don’t clog up. Pharmacopeial grades demand tight purity:at every step,someone in our team signs off on the test results. This hands-on chain,from lab to warehouse,ensures that processors and formulators get the right magnesium and sulfate ions,every time,without surprises.
Over the years,customers have shared a frustration with erratic supplies—different crystal habits,shifting solubility,and color variations that force them to re-calibrate their equipment. We decided to take these headaches seriously by investing in process control and full-scale quality documentation. Sensors inside our reactors record data minute by minute,and our laboratory double-checks each lot. This attention pays off in applications where magnesium sulphate acts as a catalyst,such as paper pulp bleaching or controlled-release fertilizers. With low variability,production losses shrink and yields grow. Our agriculture partners tell us the consistency of our heptahydrate granules keeps their blends balanced and prevents wastage. It might sound simple,but in reality,producing a bulk commodity to this level of steadiness is a mountain of daily effort. It’s what separates those who understand chemistry from those focused only on monthly volumes.
Heptahydrate,the classic “Epsom salt,” remains our flagship. Its applications range wider than most appreciate. On our site,we see it shipped in sack loads to fertilizer blenders,bulk tankers to water treatment plants,and smaller packs destined for medical saline solutions. Composed of nearly 10% magnesium and 13% sulfur by weight,it brings elemental nutrients in a soluble,easily absorbed form. Growers incorporate our magnesium sulphate into fertigation systems for tomatoes,peppers,and citrus trees—magnesium keeps leaves green and boosts yields. Those managing industrial wastewater rely on its sulfate component to precipitate heavy metals,cleaning water before discharge. Textile dyers value our heptahydrate for setting dyes and improving cloth softness. Each bag reflects careful drying,correct particle sizing,and rigorous sweeps for contamination,and these are not empty claims but what our operations people see every day in their test logs.
Demand isn’t limited to heptahydrate. Magnesium sulphate monohydrate steps up where moisture must stay low. Glass makers,ceramics producers,and those manufacturing anti-caking agents prefer the monohydrate for its stability and quick-dissolving action at higher temperatures. In these industries,traces of impurities like sodium,calcium,or insoluble grit can cause everything from product blemishes to expensive downtime. With diligent filtering and two-stage drying,we maintain monohydrate purity that holds up through repeated audits. Anhydrous form is more specialized. It attracts customers who require very low water content for use as a drying agent in solvents or for complex syntheses. Delivering consistent,dust-free anhydrous magnesium sulphate means running dryers with more precision and double-bagging shipments to prevent picking up ambient moisture. The time,care,and know-how required go far beyond most production lines.
It surprises many outsiders just how much difference small details make when magnesium sulphate is used in real processes. In fertilizer plants,non-uniform granules create bridging—a mass of product gets stuck,lines stop,and downtime costs spiral. In high-purity pharmaceutical or food uses,a single out-of-spec test sends tons to waste. For color-sensitive industrial uses—like paper or ceramics—an off-color batch,even when chemically pure,can ruin days of work. We maintain white,bright color by using only food-grade acids and water in production,monitored by colorimeters in the final blending step. Our product isn’t just washed,it's washed under exact pH and flow conditions that experience has shown keep it pure and white. Warehouse teams package immediately after blending, avoiding exposure to ambient moisture and dust pickup. These steps deliver a magnesium sulphate that arrives at the customer’s dock looking exactly as expected—batch after batch.
Our customers work in dozens of sectors. Each one cares about different risks, so they come to us looking for tailored knowledge, not just pallets of salt. In agriculture, growers and wholesalers want assurance that micronutrients won’t burn roots. Our production avoids ammonia carryover and excessive chloride—two culprits in root scorching. Water works engineers focus on soluble magnesium for hardness reduction, with their permits limiting trace metals and sulfur content; we tune our process to minimize these residuals. In pharmaceuticals, our GMP-grade magnesium sulphate passes through closed handling, regular bio-burden testing, and double-verification of heavy metal content. Food manufacturers trust our food-grade salt for flavor and mineral supplementation, requiring full cross-lot traceability. Over years of fielding questions and audits, we have built real expertise about the practical problems magnesium sulphate can solve in every setting, and where it can create headaches if not made right.
People sometimes compare magnesium sulphate to potassium sulphate, ammonium sulphate, or cheap local magnesium carbonate as potential substitutes. From seeing both successes and failures, we’ve learned that magnesium sulphate’s combination of high solubility and non-reactive sulfate is hard to match. Potassium or ammonium forms may supply needed elements but will change soil pH and can stimulate unwanted chemical reactions in sensitive blends. Magnesium carbonate, even when finely ground, refuses to dissolve at a useful speed—a major problem for fertigation. In textile dyeing or food applications, sulphate from other producers too often introduces off-colors or bitter tastes if not properly purified. Ferrous or calcium contamination sneaks through in poorly controlled plants and creates issues from paper spots to soapy scum in processing tanks. We routinely test competing materials, and time after time, our controlled process and focus on application-specific purity delivers performance others can’t match.
It’s not enough to talk about quality. Customers ask us for the assurance that each lot traces back to raw input batches, right through to final packing. Our production system tracks every step: receipt of core materials, laboratory approval, reactor documentation, through to finished-product sign-off. Regulatory landscapes change quickly. We understand REACH, food safety compliance, and the needs of the latest Codex and WHO standards. The team updates paperwork, audits supply lines, and supports customer recalls or certifications without delay or confusion. We work directly with inspection teams and certification bodies to show not just our numbers, but how those numbers are generated, handing over swab samples, calibration records, and even operator shift logs. Whether for major exporters, government buyers, or ingredient tracebacks in food and pharma, this recordkeeping stands up to real scrutiny.
Growing attention to environmental performance has changed how industrial processes run. Our magnesium sulphate plant switched to a closed water-loop system years ago, reducing fresh water use by nearly seventy percent. We capture and recycle reactor heat to dry the crystals, which cuts our fuel bills and carbon dioxide emissions. Our bagging lines use recyclable materials and we’ve cut packaging waste by collaborating with local partners who reuse our bulk sacks in agriculture. Waste acid streams, which build up during production, no longer go to landfill. Instead, we neutralize and repurpose them in lower-grade industrial by-products. The environmental footprint of magnesium sulphate isn’t only about the production line—customers increasingly want assurance the product they’re buying aligns with their sustainability plans. We document these steps, audit them for effectiveness, and share the results with our partners—not just as sales points, but as real changes to our daily operations.
Safe handling rarely makes headlines, but we know it matters every day. Magnesium sulphate isn’t hazardous in the way many chemicals are, but slips, dust inhalation, or spills in busy warehouses still create risks. We train all our warehouse staff on proper stacking, how to wear masks for dusty runs, and emergency sweeping procedures. The bags and containers we choose are strong enough to stand rough handling and forklift vibration, because there is no sense delivering a perfect batch ruined by a ripped bag. All storage areas stay cool and dry to keep the product free-flowing until it gets to the customer’s mixer or spreader. We work closely with transportation partners to minimize damage on the road. Every customer we visit gets practical advice for storage, handling, and emergency cleanup—a culture of safety learned from decades watching small slip-ups turn into big problems.
We don’t make changes in a vacuum. Our plant’s improvements come directly from what users tell us on the ground. When a batch runs clumpy, we revisit moisture control and update our cooling systems. After hearing repeated requests for a finer crystal size from food processors, we invested in a new mill and screening plant. In agriculture, when micronutrient interactions impact yield, we reformulate to cut unwelcome side reactions. Customer service isn’t a formality—when a shipment arrives off-spec, our managers roll up their sleeves and walk through the problem, because that feedback drives betterment. We keep records of complaints, suggestions, and special orders, treating each as a tool for honing our craft. This insistence on listening has made our product better, kept long-term partnerships strong, and led to process upgrades that help everyone from small local users to global enterprises.
As world agriculture intensifies and environmental rules tighten, magnesium and sulfur deficiencies crop up everywhere: in rice paddies, citrus groves, hydroponic set-ups, and commercial greenhouses. Our export teams work with both direct buyers and technical consultancies, mapping soil trends and responding proactively with blends that solve real nutrient shortfalls. In the water treatment world, sulfate is increasingly called for as heavy metals become more regulated. For construction, ceramics, flame retardants, and food fortification, magnesium sulphate offers a reliable, cost-effective mineral additive. Across these sectors, the call is for product that isn’t just chemically correct but sourced, packed, and shipped by a manufacturer that stands up to audit, environmental, and product safety demands. By staying close to these trends, we respond faster and support our buyers as regulations, process needs, and nutritional understandings change.
We have seen plenty of companies focus on moving tonnage fast, importing or relabeling, without understanding what happens after magnesium sulphate leaves the gate. What separates a genuine manufacturer is accountability: knowing how tweaks in raw inputs shift product behavior, what specific particle size does to downstream processing, where each shipment came from, and how trace contaminants can throw entire systems off. We built our processes, team knowledge, and quality checks around those realities—not from theory, but from years of trial, error, and honest conversation with customers. Magnesium sulphate is more than just “Epsom salt”—its real value comes out where trust, technical insight, and day-to-day practical understanding meet.