Kieserite /Magnesium Sulfate

Is there any alternatives for K+S ESTA® kieserite?

2025-09-09

Is there any alternatives for K+S ESTA® kieserite? Is there any alternatives for K+S ESTA® kieserite? Yes — there are several alternatives to K+S ESTA® Kieserite (MgSO₄·H₂O, water-soluble magnesium sulfate monohydrate) depending on the intended use (agriculture, horticulture, fertigation, specialty crops). 🔹 1. Direct Magnesium Fertilizers (Single Nutrient, Like Kieserite)These provide magnesium + sulfur, just like kieserite: • Magnesium Sulfate Heptahydrate (Epsom Salt, MgSO₄·7H₂O) –Highly water-soluble, widely used in fertigation, foliar spray, and horticulture. –Lower bulk density than kieserite, less suited to bulk blending but ideal for irrigation and high-value crops. • Synthetic Magnesium Sulfate Monohydrate — Kieserite Equivalents (Magnesium Sulfate Monohydrate) from China, produced chemically (not mined, unlike ESTA® kieserite). This Synthetic Kieserite has powder and granular (sometimes branded as “Kieserite Agriculture Grade”). –Similar Mg and S content to kieserite, often much cheaper but availability depends on local suppliers. –Functionally equivalent to K+S ESTA®, though purity, granulation quality, and heavy metal content may differ. 🔹 2. Multi-Nutrient Magnesium FertilizersThese supply Mg along with other micronutrients: • Kieserite with micronutrients –Provides Kieserite fertilizer (Mg, S) granulated together with B, Si, Ca, Zn, Fe, Mn … … –Insoluble, good for bulk soil application but not suitable for fertigation. ⚖️ Practical Comparison (vs. ESTA® Kieserite) Alternative Solubility Nutrients Application Notes Epsom Salt (MgSO₄·7H₂O) Fully soluble Mg + S Foliar, fertigation Quick uptake, but hygroscopic and costlier per Mg unit Synthetic Kieserite (China, etc.) Moderate solubility Mg + S Granular field use Same chemistry as ESTA®, but QC varies Rongqing’s OEM Kieserite Moderate solubility Mg + S+TE Bulk field crops Adds B/Si/Ca/Zn/Fe/Mn… slower release MgO / Magnesite Very low solubility Mg only Acid soils, blends Not suitable for quick Mg correction ✅ Conclusion: • For fertigation / foliar sprays → Epsom salt (MgSO₄·7H₂O) is the best alternative. • For bulk soil application (field…

Comparison between Rongqing’S KIESERITE and ESTA® Kieserit GRAN

2025-09-08

Those who frequently gain exposure to magnesium fertilisers, Kieserite, and magnesium sulphate, will undoubtedly be familiar with K+S’s ESTA® Kieserit GRAN. Both are kieserite products, but what distinguishes Rongqing Chemical’s kieserite granular from K+S’s ESTA® Kieserit GRANular? Let us briefly introduce the manufacturers of these two product categories:Rongqing Chemical, one of China’s established sulphate producers, operates its magnesium sulphate and sulphate-magnesium fertiliser facilities in Yingkou, Liaoning, where known as China’s Magnesium Capital. Leveraging Yingkou’s magnesite resources, Rongqing runs five modern production lines with sulphation technology, achieving a daily output of 500 tonnes for Kieserite granules and an annual capacity of 20,000 tonnes for magnesium sulphate. Rongqing Chemical is certified with ISO9001, FAMI-AS, and REACH registrations, consistently supplying various trace element magnesium fertiliser raw materials to global branded fertiliser manufacturers, distributors, importers, high-end fertiliser R&D entities, and raw material procurement operations.K+S, is a global salt producer and a leading potash fertiliser supplier. It maintains production bases in Europe and the Americas, with distribution centres in Africa and Asia. K+S pursues the policy of regional procurement and supplying mineral raw materials, products, and solutions to customers worldwide. To summarise comprehensively, the similarities and differences between Rongqing Chemical’s Kieserite Granular and K+S’s ESTA® Kieserite Granular are as follows: Similarities: 1. Both are mineral fertilisers, with magnesium and sulphur as their primary fertilising elements.2. Post-application benefits for crops include: immediate supply of dual sulphur-magnesium elements, suitability for diverse soils with pH restoration properties, synergistic enhancement of NPK fertiliser utilisation, promotion of root growth, and improved crop absorption capacity.3. Physical characteristics and application advantages: suitable for standalone application or blending with NPK fertilisers without reaction, making it an ideal co-blended fertiliser choice for farm fertilisation systems. The granular fertiliser exhibits excellent hardness and uniform particle size, making it suitable for modern mechanised fertilisation operations.4. Suitable…

Synthetic Kieserite VS Magnesium Sulfate(Espsom Salt)

Synthetic Kieserite VS Magnesium Sulfate (Epsom Salt)

2025-09-05

Rongqing Chemical –the China Kieserite source manufacturer shares the differences between Synthetic and Magnesium Sulfate. Synthetic Kieserite VS Magnesium Sulfate(Espsom Salt)1. Composition & Form Property Synthetic Kieserite Magnesium Sulfate (Epsom Salt) Chemical Formula MgSO₄·H₂O (Monohydrate) MgSO₄·7H₂O (Heptahydrate) Magnesium Content ~27% MgO (16% Mg) ~16% MgO (10% Mg) Sulfur Content ~22% S ~13% S Hydration Level 1 water molecule (low moisture) 7 water molecules (high moisture) 2. Physical Properties Property Kieserite Magnesium Sulfate(Epsom Salt) Appearance White or gray White crystalline crystals Water Solubility Soluble but slower to dissolve Highly soluble (instant in water) Moisture Sensitivity Low — storage stable High — can cake and absorb moisture Bulk Density Higher Lower (fluffier) 3. Origin & Production Synthetic Kieserite — Made by thermal dehydration of magnesium sulfate heptahydrate or by reacting magnesium oxide/hydroxide with sulfuric acid, then crystallizing into monohydrate form. — Can also occur naturally in salt deposits (natural kieserite). — Granulated forms are common for agriculture.Magnesium Sulfate (Epsom Salt) — Usually crystallized from natural brines or seawater, or made by reacting magnesium carbonate/hydroxide with sulfuric acid. — Primarily used in medical, bath, and garden applications. 4. Agricultural Application Factor Kieserite Magnesium Sulfate(Epsom Salt) Release Speed Medium — dissolves gradually in soil moisture Fast — dissolves instantly in water Best Use Base fertilizer, blending in NPK, bulk spreading Foliar spray, fertigation, quick correction of Mg/S deficiency Soil Suitability Acidic & neutral soils Any soil (fast correction) Application Frequency Longer residual effect Needs more frequent application 5. Cost & Handling · Kieserite is usually cheaper per unit of Mg in bulk agriculture and better for large-scale field application because of its granule stability. · Epsom salt is more expensive per Mg unit, better for small-scale or emergency nutrient correction, and often sold in finer crystal form. Quick Summary Choose Kieserite → If you…

What is another name for Kieserite in China?

2021-06-15

In China, Kieserite is commonly referred to as Magnesium Sulfate Monohydrate

What is kieserite used for

2021-06-15

China Bulk Kieserite Granular Powder Manufacturer/K+S Kieserite Granular Factory/Magnesium Fertilizer Supplier/Mineral Nutrients Raw Materials Producer-Rongqing Chemical

Comparison between Kieserite (MgSO₄·H₂O) and Magnesium Sulfate Heptahydrate (MgSO₄·7H₂O)

2021-06-15

comparison between Kieserite (MgSO₄·H₂O) and Magnesium Sulfate Heptahydrate (MgSO₄·7H₂O) Kieserite (MgSO₄·H₂O) and Magnesium Sulfate Heptahydrate (MgSO₄·7H₂O) in terms of product characteristics and agricultural application: ✅ Kieserite vs Magnesium Sulfate Heptahydrate Aspect Kieserite (MgSO₄·H₂O) Magnesium Sulfate Heptahydrate (MgSO₄·7H₂O) Chemical Formula Magnesium Sulfate Monohydrate (MgSO₄·H₂O) Magnesium Sulfate Heptahydrate (MgSO₄·7H₂O) MgO Content ~25–27% ~16% S (Sulfur) Content ~20% ~13% Appearance Grayish/white granules or powder White crystals (like Epsom salt) Solubility in Water Moderate (slower to dissolve) Highly soluble (fast-dissolving) Granule Hardness High – good for bulk blending Soft – may cake in humid conditions Hygroscopicity Low – stable in humid environments High – absorbs moisture easily Bulk Density Higher Lower Storage Stability Excellent – long shelf life Fair – requires sealed packaging ✅ Application Differences Application Aspect Kieserite Heptahydrate (MgSO₄·7H₂O) Best Use Soil application, bulk fertilizer blending Foliar spray, fertigation, hydroponics Release Speed Medium (slower release) Fast-acting, instantly available Recommended for Acidic soils, long-term magnesium replenishment Quick correction of Mg or S deficiency Compatibility Compatible with granular blends (e.g. NPK) Compatible with most soluble fertilizers and sprays Application Methods Broadcast, side dressing, base application Foliar spray, drip irrigation, seed soak, hydroponic use ✅ Summary: Which One to Use?

Synthetic Kieserite VS Magnesium Sulfate(Espsom Salt)

2021-06-15

1. Composition & Form Property Synthetic Kieserite Magnesium Sulfate (Epsom Salt) Chemical Formula MgSO₄·H₂O (Monohydrate) MgSO₄·7H₂O (Heptahydrate) Magnesium Content ~27% MgO (16% Mg) ~16% MgO (10% Mg) Sulfur Content ~22% S ~13% S Hydration Level 1 water molecule (low moisture) 7 water molecules (high moisture) 2. Physical Properties Property Kieserite Epsom Salt Appearance White or gray White crystalline crystals Water Solubility Soluble but slower to dissolve Highly soluble (instant in water) Moisture Sensitivity Low — storage stable High — can cake and absorb moisture Bulk Density Higher Lower (fluffier) 3. Origin & Production Synthetic Kieserite-Made by thermal dehydration of magnesium sulfate heptahydrate or by reacting magnesium oxide/hydroxide with sulfuric acid, then crystallizing into monohydrate form.-Can also occur naturally in salt deposits (natural kieserite).-Granulated forms are common for agriculture. Epsom Salt-Usually crystallized from natural brines or seawater, or made by reacting magnesium carbonate/hydroxide with sulfuric acid.-Primarily used in medical, bath, and garden applications. 4. Agricultural Application Factor Kieserite Epsom Salt Release Speed Medium — dissolves gradually in soil moisture Fast — dissolves instantly in water Best Use Base fertilizer, blending in NPK, bulk spreading Foliar spray, fertigation, quick correction of Mg/S deficiency Soil Suitability Acidic & neutral soils Any soil (fast correction) Application Frequency Longer residual effect Needs more frequent application 5. Cost & Handling -Kieserite is usually cheaper per unit of Mg in bulk agriculture and better for large-scale field application because of its granule stability.-Epsom salt is more expensive per Mg unit, better for small-scale or emergency nutrient correction, and often sold in finer crystal form. Quick Summary Choose Kieserite → If you want a slow-to-medium release, high Mg content, bulk-spread fertilizer that stores well.–Choose Epsom Salt → If you want instant dissolution for quick Mg/S correction via foliar spray or fertigation.