Magnesium Sulphate

Basic Information:

Product Name: Magnesium Sulphate

Chemical Formula: MgSO₄•nH₂O(n=1 or 7)

Formula Weight(n=1): 138.38 g/mol

Formula Weight(n=7): 246.47 g/mol

HS CODE: 2833210000

Place of Origin: China

Product Description:

Magnesium sulphate contains magnesium sulphate anhydrous, monohydrate and heptahydrate which is a white or off-white crystalline powder or granule. It has various applications in feed, fertilizer, medicine, building materials, printing and tanning, etc.

Agricultural Grade Guaranteed Specifications: GB/T 26568-2011

Specifications	Agricultural Grade Magnesium Sulphate
Water of crystallization	Monohydrate	Monohydrate	Heptahydrate
Grade	Powder	Granule	Crystal
Soluble Mg	15.0% min	13.5% min	9.5% min
Soluble S	19.5% min	17.5% min	12.5% min
Cl^-	2.5% min	2.5% min	2.5% min
pH	5.0-9.0	5.0-9.0	5.0-9.0
Water Insoluble Matter	—	—	0.5% max
Particle Size (2.00 mm-4.00 mm)	—	70% min	—
Appearance	White, Gray or Yellow Powder, no caking.	White, Gray or Yellow Granule, no caking.	Colorless or White Crystal, no caking.

Feed Grade Guaranteed Specifications: GB/T 32449-2015

Specifications		Feed Grade Magnesium Sulphate
Water of crystallization		Monohydrate	Heptahydrate
MgSO₄		94.0% min	99.0% min
Mg		16.5% min	9.7% min
As		2.0ppm max	2.0ppm max
Pb		2.0ppm max	2.0ppm max
Hg		0.2ppm max	0.2ppm max
Fineness (Passing 400 um mesh)		95% min	—
Clarity Test		Clarifying
Appearance	Chemical synthesis by sulfuric acid method	White Powder	Colorless Crystalline Granule, no caking.
	Salt Lake Brine Method	Off-white Powder
Chloride (as Cl)	Chemical synthesis by sulfuric acid method	0.1% max	0.1% max
	Salt Lake Brine Method	1.5% max	1.0% max

Production：

The Magnesium Sulphate Heptahydrate can be obtained by reacting the sulfuric acid with the raw material of containing Magnesium such as Magnesium oxide, Magnesium hydroxide, Magnesium carbonate, Magnesite, etc. Besides, it can also produced by mixing the byproduct of preparing KCl and the mother solution containing Mg from bromine production after cooling, crystallization, separation, filtration, purification and recrystallization. And plus, it can also obtained by the process of heating, concentration,crystallization and separation as the raw material of salt lake brine. The magnesium sulphate monohydrate can be prepared by magnesium sulphate heptahydrate after heating and dehydrating.

Applications:

In fertilizer industry, MgSO₄is good fertilizer with high water-solubility to supply Mg element. In agriculture and horticulture, it can be used to improve the soil of Mg deficiency (Mg is a basic element of chlorophyll molecule), and is most commonly used for potted plants, or magnesium-containing crops, such as potatoes, roses, tomatoes, peppers and marijuana.
In feed industry, it is a feed additive as Magnesium and Sulfur supplement because Mg is the important ingredient for animal bones, teeth, soft tissues, etc. And Sulfur is the matrix for synthesizing chondroitin and the ingredients for synthesizing taurine and heparin, etc.

Packaging:

We effectively solved the problem of the caking of fertilizer by improving the appearance and quality of packages such as the thickness of inner bags, the tightness of bags and loading capacity of outer bags.

All kinds of customized packages can be provided according to customer’s requirements.

25 Kg/50 Kg Laminated woven bags
500Kg/600 Kg/1000 Kg/1200 Kg bulk bags
20 Kg/25 Kg PE Valve bags or PE heated sealed bags
20-27 MT loose or on pallet in containers

Feed additives

Nitrogen(N)

Phosphorus(P)

Potassium(K)

NPK Compound

Micronutrients

Organic Potassium(K)

Organic Nitrogen(N)

Organic Phosphorus(P)

Organic NPK Compound Fertilizer

Single Component

Binary Component

Multi-Component

Magnesium Sulphate

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