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Magnesium Sulfate Kieserite, Powder (MgO 26%)

Basic Info

Model No.:  MgO 26%

Product Description

Model NO.: MgO 26%

Release Type: Quick

Type: Compost

Specification: MGO26

Classification: Trace Element Fertilizer

Appearance: Powder

Transport Package: 25/50kg PP Bag

Origin: China

Magnesium sulfate is an inorganic salt containing magnesium, sulfur and oxygen, with the formula MgSO4. It is often encountered as the heptahydrate sulfate mineral epsomite (MgSO4· 7H2O), commonly called Epsom salt, named for a bitter saline spring from the town of Epsom in Surrey, England, where the salt was produced from the springs that arise where the porous chalk of the North Downs meets non-porous London clay. Epsom salt occurs naturally as a pure mineral. Another hydrate form is kieserite.


Magnesium sulphate fertilizer is a kind of small white crystal. It has been widely applied in many countries and regions, especially in rubber tree, oil palm, tobacco plant, orange and tangerine plant and grassland with tangible result. The magnesium sulphate fertilizer is widely used in the fields of agriculture, livestock breeding, forestry and soilless culture.


1. In agriculture and gardening, Magnesium sulphate heptahydrate is used to correct magnesium deficiency in soil, since magnesium is an essential element in the chlorophyll molecule. It is most commonly applied to potted plants, or to magnesium-hungry crops, such as potatoes, roses, tomatoes, peppers. The advantage of Magnesium sulphate Heptahydrate over other magnesium soil amendments(such as dolomitic lime) is its high solubility.

2. Magnesium sulphate heptahydrate is also used to maintain the magnesium concentration in marine aquaria which contain large amounts of stony corals as it is slowly depleted in their calcification process. In a magnesium-deficient marine aquarium is present to sabilize these ions in the saltwater and prevent their spontaneous precipitation ionto calcium carbonate.

3. Magnesium sulphate Heptahydrate is used as the electrolyte to prepare copper sulfate.

4. Magnesium sulphate Heptahydrate is used as a brewing salt in beer production to adjust the ion content of the brewing water and enhance enzyme action in the mash or promote a desired flavor profile in the beer.

5. Magnesium Sulphate Heptahydrate is also widely apply in medical use.


Total MgO ≥25%
Water MgO ≥21%
Size 2-5mm
Appearance Gray granular

Competitive Advantage:

Increased the dry matter yield of Guinea grass

Increased the crude protein content

Increased the magnesium uptake of the grass

Can be formulated into granular fertilizing mixtures as well as plant nutrient solutions.

As foliar feeding, it significantly increases magnesium absorption as compared to feeding by soil.

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Product Categories : EDTA Micronutrient