Magnesium Sulphate Heptahydrate Price

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MAGNESIUM SULPHATE

Magnesium sulfate heptahydrate, also known as Epsom salt, is a hydrated form of magnesium sulfate with the chemical formula MgSO4·7H2O457. It is an inorganic salt that crystallizes in the monoclinic system and appears as colorless, transparent crystals, often found in fibrous, prismatic, or granular forms5. The crystals have a bitter taste and are soluble in water, with a solubility of about 71g per 100mL at 20°C, which increases to about 91g per 100mL at 40°C. It is slightly soluble in ethanol but almost insoluble in acetone245.

Natural Carbonate Method: Involves adding sulfuric acid to natural magnesium carbonate (lansfordite) and recrystallizing after removing carbon dioxide.

Seawater Bittern Method: Utilizes the bittern obtained from seawater evaporation, which is then treated with magnesium chloride solution to precipitate crude magnesium sulfate heptahydrate.

Sulfuric Acid Method: Combines magnesium oxide with a low concentration of sulfuric acid, followed by filtration, precipitation, concentration, crystallization, centrifugal separation, and drying to yield the final product.

Medical: Used as an emetic, laxative, and antispasmodic agent. It can also be used in the treatment of constipation, fluid retention, and certain heart conditions.

Stability and Physical Properties:

The compound is stable below 48.1°C but can lose water molecules at higher temperatures, transitioning to anhydrous magnesium sulfate at around 200°C.

It has a density of approximately 1.67 g/cm³ and a melting point of 1124°C5.

Magnesium sulfate heptahydrate is an important compound with a wide range of applications across various industries, from healthcare to agriculture, and its safe and effective use is supported by its well-understood physical and chemical properties.

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