Our Product

    Magnesium Sulfate Heptahydrate

  • Magnesium sulfate heptahydrate

  • Colorless small needle-like or oblique columnar crystals

  • Size: 0.1-1mm, 1-2mm, 1-3mm, 2-4mm

Magnesium Sulfate Heptahydrate Brief Description

Other Name: Magnesium sulfate, Magnesium sulfate heptah, MgSO47H2O, magnesium salt, Epsom salts.

Raw Material: magnesium oxide

CAS: 10034-99-8

Color: Colorless small needle-like or oblique columnar crystals.

Size: 0.1-1mm, 1-2mm, 1-3mm, 2-4mm

Purity: 99.5% 99% 98%         

OEM: Yes

Grade Standard: Agriculture Grade, Industrial Grade, Food Grade.

Magnesium Sulfate Heptahydrate Application: fertilizer, ceramic, paper production, animal feed, Epsom salts, medical, leather making, painting, injection, bath salt. 


Product Features  

  • Molecular weight: 246.47
  • Molecular formula: H14MgO11S
  • Melting point: 1124C
  • Density: 1.68
  • PH value: 5.0-8.0 (25, 50mg/mL in H2O)
  • Solubility: easily soluble in water, slightly soluble in ethanol and glycerin, Insoluble in acetone.


Product Manufacturing  

Production Condition: Magnesium oxide and sulfuric acid react proportionally.


Application in Agriculture  

Magnesium sulfate can be used to improve magnesium-deficient soil. It is mainly used for potted plants or magnesium-containing crops. As a fertilizer, it can provide rich nutrition for the dealer and is an important fertilizer.


Application in Breeding industry 
Magnesium sulfate is an important feed additive for poultry and livestock. Magnesium participates in the development of bones and muscles in animals, and can regulate the metabolism and nervous system of animals. It is also a directly related factor for many enzymes in animals and is very important for animal growth and development. 


Application in industry

Magnesium sulfate is used for printing and dyeing cotton, as a weighting agent for cotton and silk; as a filler for kapok products; as a coloring salt for blue dyes, as an alkali absorbent in black liquid; as a fertilizer, porcelain, paint, and fireproof material Used as a medium component in the microbial industry, as an additive in brewing, to supplement the magnesium in the brewing water, as a nutritionist during fermentation; as a filler in the tanning industry to enhance heat resistance; used in light industry Used for producing fresh yeast and monosodium glutamate; as a stabilizer in toothpaste production; as a cement coagulant.


Application in industry

After being dissolved in water, magnesium sulfate can react with light burned powder to form magnesium oxysulfide cement. Magnesium oxysulfide cement has good fire resistance, heat insulation, durability and environmental protection, and is used in many fields such as fire door core panels, external wall insulation panels, siliceous modified insulation panels, and fire panels.


Magnesium sulfate heptahydrate Spefication

 Grade Project  MgS047H20
 Exterior  White crystalline
 Main content2%  99.5
 MgS042%  48.59
 Mg02%  16.20
 Mg2%  9.80
 PH value5% aqueous solution  5.0-9.2
 (Fe)S%  0.0015
 (cl)%  0.014
 (Pb)S%  0.0006
 (As)%  0.0002



 25kg/bag,50kg/bag  25kg/bag+pallet


 Bulk shipment



Our Advantages  

We have our own raw material magnesite mine for product magnesium oxide, which is the main material for magnesium sulfate heptahydrate.  
We the manufacturer with competitive price and our factory is near to the export port.



Q: Are you factory or trading company?
A: We are factory, also own independent import and export right.  
Q: Where is your factory located in?
A: We are located in Dandong, Liaoning. world biggest and best MgOH and MgO ore base.
Q: Could you provide sample for test before mass production?
A: Yes, we can send free samples to you.
Q:What's your payment terms?

A:T/T, L/C, Secure Payment.
Q:Can you accept OEM?
A: Yes.
Q:How can i get your exact quotation?

A: Pls inform us the purity, packing, particle size and quantity.


If you have any suggestions or questions for us.Please contact us.

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