International name: Magnesium Sulfate

Synonyms: magnesium sulphate, heptahydrate, magnesia, Epsom salt

Chemical formula: MgSO4

Appearance: colorless prismatic crystals

Production: Poland, China

Packaging and storage: bag 25 kg; up to 3 years

Description

Magnesium sulphate is an inorganic substance, a salt of a magnesium metal and sulfuric acid, a white powder that forms several crystalline hydrates. It is produced in the form of a fine crystalline powder, the color of which can vary from white to light yellow-gray. This agrochemical is very soluble in water, safe for transportation. Can be stored in clear form if hidden from direct sunlight and precipitation. Does not cake. does not accumulate moisture. It is used both in agriculture, and in medicine, in the production of paper. The shelf life of magnesium sulphate is unlimited. Sold in a packaged form.

Properties

Magnesium sulphate - soluble in ethanol, glycerin and diethyl ether. Insoluble in acetone. The density is 2.66 g / cm³. At a temperature of 1010 ° C, a transition to another rhombic phase occurs. Colorless prismatic crystals. Solubility in water (1: 1 in cold and 3: 1 in hot water). Contains up to 35% crystallization water. With weathering and heating, it loses water and forms dehydrated magnesium sulfate
It forms several crystalline hydrates. The most studied crystalline hydrates are MgSO4 • 7H2O (epsomite), MgSO4 • 6H2O and MgSO4 • H2O (kieserite)
It is one of the main compounds in sea water responsible for sound absorption, and the sound energy is converted to thermal.

Getting
Technically pure seven-water magnesium sulphate (epsolite (MgSO4 x 7H2O)) is obtained by cooling to -5 ° C of a brine with a density of 1.29-1.31 g / cm3. This brine is obtained by evaporation of sea water with the addition of 6% of sea water to it.
Kiserite MgSO4 x H2O and pure magnesium sulphate MgSO4 are obtained by dehydrating epsolite. The first six water molecules are removed at a temperature of up to 70 ° C.
In addition, kieserite is obtained as an insoluble precipitate in the water treatment of natural potassium salts. Further cleaning is carried out by flotation followed by dehydration. This allows the production of a product containing not less than 98% MgSO4.
Dehydration of kieserite passes in rotary kilns with flue gas heating, starts at 200 ° C and ends at 440 ° C.

Application
In agriculture, it is used as a fertilizer to increase the content of sulfur and magnesium in the soil.
The applications of magnesium sulfate are extremely diverse. It is used: - in agriculture as a fertilizer to increase the content in the soil of sulfur and magnesium - for the production of feed yeast - in the industry for the production of paper and for tanning the skin - in the chemical industry - in medicine (in the manufacture of soothing antispasmodics ), - for the manufacture of detergents, - for the production of explosives, - for the production of mineral water, - for the production of various quality papers - for the production of cements, - for the textile industry as a weighting agent for cotton and silk < / p>

The use of magnesium sulfate and other sulfur-containing and magnesium-containing fertilizers increases the quality of plant products: the content of not only the protein but also the dry matter increases. There is an improvement in the seed quality of the crop. The germination and germination energy of seeds increases, and the resistance of grown plants to the unfavorable environmental conditions and to various fungal diseases increases.
Magnesium sulfate eliminates acute magnesium starvation, which can be determined visually.
Potatoes, vegetables (cucumbers , tomatoes). Increases yield and improves taste.

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