Kieserite-kieserite

Staight Fertlizer Magnesium Fertiliser -Produced by Rongqing the China leading magnesium sulfate fertilizer factory

Straight Fertilizer Magnesium Fertiliser

2025-10-14

1.Straight Fertilizer Magnesium Fertiliser Magnesium Sulfate is a kind of Staight Fertlizer refers, and also is a sythetic kieserite fertiliser consisting magnesium (Mg) and sulfur (S). The Chemical fomula of this fertilizer is MgSO4•H₂O. 2.Straight Fertilizer Magnesium Fertiliser Specifications Straight Magnesium Fertilizer Powder Granule Water Soluble MgO 5%~25% 5%~25% Total MgO 25%~30% 20%~27% Size 80~200mesh 2~5MM 3.Straight Fertilizer Magnesium Fertiliser Advantages 1. It’s the most economical & efficient fertilizer, supplying plants magnesium and sulfur elements. It’s widely used in fruits and vegetables, tobacco leaves, oil palms, bananas and other field economic crops.2. Partially soluble Medium fertilizer,Blended Fertilizer Mixed Granular,BB fertilizer mate,Soil conditioner, Microbial agent fertilizer, granular fertilizer raw material,heavy metal passivator.3. There are completely water-soluble and incomplete water-soluble slow-release granules, suitable for the application with modern agricultural equipment.4. Storage Stability: Low hygroscopicity (minimal caking) and consistent crystal structure ensure reliable performance during transport and use. 4.Used on Citrus, oil palms, trees, shrubs, annuals, and turf,cops ,almost suit for all the crops. 5.Straight Fertilizer Producer Introduction Rongqing Chemical has Focused on Straight Fertilizer and Magnesium fertilizer for 20+ years. Our Kieserite Fertilizer Factory is located in Dashiqiao, Yingkou, Liaoning, China. It covers an area of 50,000 ㎡, and currently has 55 employees. We runs production, OEM/ODM processing of various medium and TE granular fertilizers. Our Main products: Magnesium Sulfate, Kieserite, Si-Ca-Zn-B-Mg fertilizer, kinds of Medium+TE granulars such as compound fertilizers, Blended Fertilizer Mixed Granular,BB fertilizer, water-soluble fertilizers, bio-organic fertilizers, microbial agents, soil conditioners, etc. Our daily output of granular fertilizers is 300~500 tons. We have independent R&D department and foreign trade department, and our products are sold both at home and abroad. Contact Rongqing 🔹Choose Rongqing Chemical the China leading kieserite factories, Your Reliable Long-term Partner 🔹Our Straight Fertilizer Kieserite & Magnesium Sulfate products feature high purity, stable supply, international standards, and…

Kieserite Powder/ Kieserite Granular-Rongqing the China leading kieserite manufacturer

Kieserite Fertilizer

2025-09-30

Kieserite Fertilizer Kieserite Fertilizer, also called Magnesium Sulfate Monohydrate, is an ideal and commonly magnesium fertilizer used in fields, gardens and crops. In agriculture, it serves as an important secondary nutrients source of magnesium and sulphur. When applied to the ground in different horticultural and broad acre crops, it slowly dissolves in water which makes it perfect because of its low solubility in water. Kieserite fertilizer can be used as Straight Fertilizer either or as an ingredient in mixed fertilizers or compound fertilizers. Kieserite Fertilizer Specification Kieserite Kieserite Powder Kieserite Granule Water Soluble MgO 5%~25% 5%~25% Total MgO 25%~30% 20%~27% Size 80~200mesh 2~5MM Kieserite Fertilizer Application Rongqing the Kieserite Fertilizer Producer Introduction Rongqing Chemical has Focused on Kieserite Fertilizer and Magnesium fertilizer for 20+ years. Our Kieserite Fertilizer Factory is located in Dashiqiao, Yingkou, Liaoning, China. It covers an area of 50,000 ㎡, and currently has 55 employees. We runs production, OEM/ODM processing of various medium and TE granular fertilizers. Our Main products: Magnesium Sulfate, Kieserite, Si-Ca-Zn-B-Mg fertilizer, kinds of Medium+TE granulars such as compound fertilizers, Blended Fertilizer Mixed Granular,BB fertilizer, water-soluble fertilizers, bio-organic fertilizers, microbial agents, soil conditioners, etc. Our daily output of granular fertilizers is 300~500 tons. We have independent R&D department and foreign trade department, and our products are sold both at home and abroad. Contact Rongqing 🔹Choose Rongqing Chemical the China leading kieserite factories, Your Reliable Long-term Partner 🔹Our Kieserite & Magnesium Sulfate products feature high purity, stable supply, international standards, and professional service. Exported to 40+ countries worldwide, we are trusted by leading fertilizer brands and large-scale farms. 💡 Contact us today to get the latest quotation and free samples. Let us support your fertilizer formulation and agricultural growth! 📩 Email: marketing@rqsulfates.com📞 Tel: +86-151-1140-0823💬 WhatsApp/WeChat: +86-151-1140-0823

The History of China’s Kieserite Fertilizer Industry

2025-09-04

Before delving the history of China’s Kieserite magnesium fertilizer industry, let me first explain the origin of the term “Kieserite.” The Origin of “Kieserite” Saxony-Anhalt, Germany—the site of kieserite’s discovery—possesses abundant mineral resources, particularly potash and rock salt. The extraction of these mineral salts has made significant contributions to Germany and earned it international renown. This is why the mineral salt giant K+S Group originated in Germany. The Development History of Kieserite and Magnesium Sulfate Fertilizer in China The development of mineral salts relies heavily on natural mineral resources. Fortunately, Liaoning Province China, also possesses a mineral belt rich in magnesite deposits. Over 130 years after the discovery of Kieserite, by the 1990s, China’s magnesite processing industry in Liaoning had matured significantly. Particularly in the Dashiqiao area of Yingkou, Liaoning—where magnesite deposits are exceptionally abundant—enterprises producing magnesia, magnesite ingots, magnesia bricks, and refractory materials proliferated. However, intense industry competition severely impacted corporate profitability. This situation in Liaoning’s magnesium mining hinterland serves as a microcosm of the broader Chinese magnesium processing industry’s urgent need for new development pathways. Moreover, the growing modern agricultural sector is increasingly shifting toward highly efficient, intensive production. Large-scale farms require substantial amounts of medium-element fertilizers like magnesium fertilizers to supplement crops such as oil palms, bananas, and cocoa in Southeast Asia, as well as tobacco and cocoa cultivation. and tobacco and cocoa cultivation. Pioneering Chinese sulfur-magnesium fertilizer specialists seized these market opportunities, assembling technical teams to drive innovation in the magnesite chemical industry. Starting from pilot-scale trials, they expanded to multiple production lines and R&D/manufacturing bases. Amidst China’s surging magnesium chemical industry, Rongqing Chemical continually adapts to evolving market demands. The booming cultivation of high-value fruits in modern agriculture has created significant market demand for premium water-soluble magnesium fertilizers. Rongqing Chemical has progressively expanded its production…

China Magnesium sulfur power,ESTA Kieserit FINE Alternative-Rongqing Chemical the leading kieserite Magnesium Sulphate manufacturer China

Magnesium Sulfur Powder

2025-07-16

Magnesium Sulfur Powder (ESTA Kieserit FINE Alternative) 🔹 Product OverviewMagnesium Sulfur Powder is an important medium element fertilizer and ESTA Kieserit FINE Alternative that provides magnesium and sulfur elements, which is commonly preferred to be quickly-available magnesium fertilizer needed on very deficient soils and wide variety of plants. Magnesium sulfur powder is essential for enhancing soil health and is widely used in organic farming practices. 🔹Magnesium Sulfur Powder (MgSO4·H₂O) Detail Specification: Items Kieserite Powder Total MgO %min 25%~30% Water Soluble MgO %min 5%~25% Water Soluble S %min 20 Cl- %max 0.5 Moisture [After drying] %max 3 Pb ppm max 10 As ppm max 10 Hg ppm max 1 Cd ppm max 10 Size mesh 80-200mesh 🔹 Magnesium Sulfur Powder (ESTA Kieserit FINE Alternative) Benefits Applying Magnesium sulfur powder can lead to improved nutrient absorption in plants. 1.Promotes chlorophyll formation and improves photosynthesis.2.Enhances crop yield and quality.3.Supports protein synthesis and nutrient uptake.4.Especially beneficial for magnesium-sensitive crops like potatoes, citrus, tomatoes, coffee, and rice. 🔹 Magnesium Sulfur Powder Factory Introduction: Rongqing Chemical Co., Ltd, one of China’s established sulphate producers, operates its magnesium sulfate and Magnesium Sulfur Powder fertiliser facilities in Yingkou, Liaoning, where known as China’s Magnesium Capital. Leveraging Yingkou’s magnesite resources, Rongqing runs 5 modern production lines with sulphation technology, achieving a daily output of 500 tonnes for Kieserite granules (ESTA Kieserit FINE Alternative) and an annual capacity of 20,000 tonnes for magnesium sulphate. Certified with ISO9001, FAMI-QS, and REACH registrations, Rongqing Chemical consistently supplys 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. 🔹 Recommended Application Application Method Dosage1.Soil Application 50–100 kg/ha, depending on crop2.Foliar Spray 1–3% solution, apply every 10–15 days3.Fertigation 10–30 kg per hectare 🔹 Packaging & Storage Packaging Options: 25kg bag, 50kg…

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.

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Kieserite Granular 2-4MM

2020-04-07

Rongqing Chemical Focus on producing kinds of kieserite granulars,granular kieserite,kieserite granules,esta kieserit gran,welcome to touch with prilled kieserite producer & esta kieserit gran manufacturers China

Kieserite Raw Materials

2020-04-07

Kieserite Raw Materials Kieserite Raw Materials Magnesium sulfate fertilizer is a high – efficiency soil amendment and plant nutrient fertilizer that integrates Magnesium (Mg) and Sulfur (S). It is mainly composed of Magnesium Sulfate Monohydrate (MgSO₄·H₂O), which not only serves as a nutrient supplement but also improves soil acidity and structure. This product is widely used in grain crops, economic crops, and horticulture, making it an ideal choice for green agriculture and high – yield planting. Kieserite Raw Material |Rongqing Chemical, also called Magnesium Sulfate Monohydrate, is an ideal and commonly solution to combat magnesium deficiencies in fields, gardens and lawns. kieserite serves as an important source of magnesium and sulphur for fertilizers.When applied to the ground in different horticultural and broad acre crops, the magnesium fertilizer raw materials slowly dissolve in water which makes it perfect because of its low solubility in water. Kieserite Raw Materials suppliers /Rongqing Chemical’s Specification Kieserite Raw Materials Specification Total MgO 25~30% Water Soluble MgO 5~25% Size 80~200mesh Packing 25/50kgs bags; 1000~1350kg Big bags Appearance Off white (Cl⁻) Content ≤0.5% Use of Kieserite Fertiliser 1.Dual – element supplementation: Magnesium is a core component of chlorophyll, which promotes photosynthesis and enzyme activation. Sulfur participates in protein synthesis and enhances the stress resistance of plants.2.Soil improvement: It can adjust the pH value of acidic soils (the pH value can be increased by 0.3 – 0.5 units after continuous application for three years per mu) and enhance the soil’s water – retention and fertilizer – retention capacity.3.High – efficiency absorption: With good water solubility, it can be quickly absorbed by crops, and the fertilizer utilization rate is significantly higher than that of traditional fertilizers. Rongqing Chemical‘s Kieserite Raw Materials Advantages 🔹Comprehensive nutrition, increased yield and improved quality🔹Significant yield increase: Reasonable application of kieserite fertilizer can increase the yield of magnesium –…