Magnesium Sulphate Heptahydrate(Epsom Salt)99.5% 0.1-1mm Crystal
group nameHigh Purity Magnesium Oxide
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Min Order20 metric ton
brand nameRichase Specialty Chemical Additives Supplier
modelMagnesium Sulphate Heptahydrate 99.5% 0.1-1mm
payment methodL/C, D/A, D/P, Western Union
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update timeThu, 25 Dec 2025 09:25:30 GMT
Paramtents
CAS No. 10034-99-8
Place of Origin China (Mainland)
Grade Standard Agriculture Grade, Industrial Grade, Medicine Grad
Appearance Colorless tiny acicular or inclined columnar cryst
Brand Name RC
Raw Material Magnesium oxide + sulphate acid
Export quantity 2 million tons of to international market
Model Heptahydrate and Monohydrate
Purity 98% 99% 99.5%
Magnesium contain 12-25
Packging & Delivery
Min Order20 metric ton
Briefing
Magnesium Sulphate Heptahydrate 99.5% is widely used in industrial, agriculture and feed.
Detailed
What is Magnesium Sulphate Heptahydrate?
Richase Enterprise is the manufacturer of magnesium sulphate Heptahydrate, Our Main market is Egypt, Bangladesh, Saudi Arabia, Ecuador, Honduras, Costa Rica, Guatemala, Chile, Peru, Mexico, Dominican, USA, Poland, Ukraine, Brazil, Italy and Lebanon, applicated in fertilizer grade, food grade, industry grade and also the feed grade, and the annual consumption is about 30,000ton/year.
Core Features & Competitive Advantages
High-Purity Dual Nutrients
· Balanced Magnesium & Sulfur: Delivers readily available Mg (≥9.8%) for chlorophyll synthesis and enzyme activation, along with S (≥13%) for protein and vitamin formation. This dual-action is crucial for photosynthesis and overall plant/animal health.
· High Water Solubility: Features exceptional solubility, dissolving quickly and completely in water, which facilitates rapid uptake by plants through roots or leaves, and ensures efficient utilization in feed and industrial applications.
Versatile Physical Form
· Crystalline Granules/Powder: Available in consistent, free-flowing crystalline forms that are easy to handle, measure, and blend uniformly into fertilizers, feed mixes, or industrial solutions.
· High Bioavailability: The sulfate form of both magnesium and sulfur is highly bioavailable to plants and animals, ensuring that the nutrients are effectively absorbed and utilized.
Quality & Safety Assurance
· Stringent Purity Standards: Produced with strict quality control to minimize heavy metals and undesired impurities, ensuring safety for crops, livestock, and sensitive industrial processes.
· Industry Compliance: Manufactured to meet relevant agricultural, feed grade, and technical grade specifications, providing reliability for global customers.
Magnesium-Sulphate-Heptahydrate(Epsom-Salt)
Storage & Handling Stability
· Stable Under Recommended Conditions: When stored in a cool, dry, and well-ventilated environment in sealed packaging, the product maintains its efficacy and physical properties.
· Controlled Dehydration: In dry air, it may gradually lose water of crystallization (effloresce). Proper packaging and storage are key to maintaining its heptahydrate form and weight consistency.
Functional Efficacy
· For Plants: Rapidly corrects magnesium deficiency (interveinal chlorosis), enhancing photosynthesis, improving fruit set, color, and sugar content in crops.
· For Animals: Serves as an essential dietary supplement to prevent magnesium deficiency disorders (like grass tetany in ruminants), supporting nerve function and metabolism.
· Industrial Role: Acts as a coagulant, drying agent, or nutrient source in various manufacturing processes, including textiles, chemicals, and bath products.
Product Specifications
| Grade | Magnesium Sulphate Heptahydrate | Magnesium Sulphate Monohydrate | ||||
| (Epsom Salt/MgSO4.7H2O) | (Kieserite/MgSO4.H2O) | |||||
| A | B | C | A | B | C | |
| pecification | Purity | Total MgO | ||||
99.5%min | 99%min | 98%min | 27%min | 26%min | 25%min | |
S | S | |||||
12.5%min | 12.5%min | 12.5%min | 20%min | 16%min | ||
Mg | W.MgO | |||||
9.6%min | 9.5%min | 9.5%min | 25%min | 20%min | ||
Cl | PH | |||||
0.015% max | 0.015% max | 0.015% max | 6-9 | 6-9 | 6-9 | |
Lead | Pb | |||||
0.0005% max | 0.01% max | 0.01% max | 5ppm | |||
As | As | |||||
0.0005% max | 0.005% max | 0.005% max | 2ppm | |||
Appearance | 0.1-1mm/1-3mm/
2-4mm/4-6mm | 0.1-1mm | 0.1-1mm/
2-4mm Extrusion
granular | Powder and Granular | ||
Packing&Delivery
Application
Agriculture – Soil & Foliar Application
Application: Apply 5-15 kg per hectare to soil or as a 1-2% solution for foliar spray on Mg-deficient crops.
Benefit: Quickly greens yellowed leaves, improves crop vigor, yield, and quality, particularly beneficial for citrus, tomatoes, potatoes, and roses.
Animal Feed – Nutritional Supplement
Application: Homogeneously mixed into mineral premixes or complete feed for cattle, sheep, poultry, and aquaculture.
Benefit: Prevents magnesium deficiency, supports proper bone development, enzyme function, and overall metabolic health in livestock.
Industrial & Specialty Uses
Application: Used in the manufacture of bath salts, as a coagulant in tofu production, in textiles, fertilizers, and as a laboratory reagent.
Benefit: Provides a pure and reliable source of magnesium and sulfate ions for diverse chemical and manufacturing needs.
Applications & Solutions
Factory & Workshop
Our Advantages
1.More than 10 years'experience in Magnesium products filed.
2.Working with shipping company directly can get lower sea freight.
3.Grasp industry information timely.
4.Faster working efficiency, better service,and ensure after-sale service.
5.The geographical position is superior,near the mine and the port.
6.Superior raw material.
7.Qualitycertificate:lSO,SGS,CIQ,Intertek,CCIC.
8.With rich and professional export experience incontainer and bulk cargo ship.
9.Annual capacity 500,000mts.
10.Provide professional Pre-sale consultingincludingproduct, packaging, transportation,certification andtesting etc.
11.Test the quality, weight and packaging of theproduct before shipment.
12.Prompt reply within 12 hours.
13.Bag customization service.
CERTIFICATE
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FAQ
1.More than 10 years'experience in Magnesium products filed.
2.Working with shipping company directly can get lower sea freight.
3.Grasp industry information timely.
4.Faster working efficiency, better service,and ensure after-sale service.
5.The geographical position is superior,near the mine and the port.
6.Superior raw material.
7.Qualitycertificate:lSO,SGS,CIQ,Intertek,CCIC.
8.With rich and professional export experience incontainer and bulk cargo ship.
9.Annual capacity 500,000mts.
10.Provide professional Pre-sale consultingincludingproduct, packaging, transportation,certification andtesting etc.
11.Test the quality, weight and packaging of theproduct before shipment.
12.Prompt reply within 12 hours.
13.Bag customization service.
Q1: What's the main difference between Magnesium Sulphate Heptahydrate and Monohydrate?
A: The key difference is water content and concentration. Heptahydrate (Epsom Salt) contains crystal water and is ideal for applications where high solubility and rapid dissolution are needed (e.g., foliar sprays, bath products). Monohydrate is more concentrated in Mg, contains less water, and is often preferred for dry blending in fertilizers or feeds where moisture control is critical.
Q2: Is Epsom Salt (Magnesium Sulphate Heptahydrate) safe for all my plants?
Generally, yes, when used correctly. It's an effective and safe magnesium source. However, it's always best to conduct a soil test to confirm magnesium deficiency before application and follow recommended dosages to avoid over-application, which can imbalance soil nutrients.
Q3: How should I store this product to prevent it from hardening or degrading?
A: Store in a cool, dry place in tightly sealed, moisture-resistant packaging. Minimize exposure to dry air to prevent gradual loss of water crystals (efflorescence), which can reduce weight but does not typically ruin the product for most applications if used promptly after opening.
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- Nearest port for product export
- Dalian, Qingdao, Tianjin, Huangpu
- Delivery clauses under the trade mode
- FOB, CFR, CIF, EXW, DDU, Express Delivery
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