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Magnesium Sulfate Monohydrate (CAS 14168-73-1)


Magnesium Sulfate Monohydrate (CAS 14168-73-1)

Magnesium sulfate or magnesium sulphate (in British English) is a chemical compound, a salt with the formula MgSO4, consisting of magnesium cations Mg2+ (20.19% by mass) and sulfate anions SO2−4. It is a white crystalline solid, soluble in water but not in ethanol.

Magnesium sulfate is usually encountered in the form of a hydrate MgSO4·nH2O, for various values of n between 1 and 11. The most common is the heptahydrate MgSO4·7H2O, known as Epsom salt, which is a household chemical with many traditional uses, including bath salts.

The main use of magnesium sulfate is in agriculture, to correct soils deficient in magnesium (an essential plant nutrient because of the role of magnesium in chlorophyll and photosynthesis). The monohydrate is favored for this use; by the mid 1970s, its production was 2.3 million tons per year. The anhydrous form and several hydrates occur in nature as minerals, and the salt is a significant component of the water from some springs.



Industries: Paints and varnishes, Fertilizers, Cosmetic industry, Pharmaceutical industry, Building chemistry
CAS number: 14168-73-1
WE number: 231-298-2
Chemical formula: MgSO4·1H2O
Molar mass: 138,29 g/mol

Other physical properties

pH: 6,5 – 7,5 (przy 50 g/l H2Ow 20°C )
Relative density: 2,66 g/cm3 (20°C )
Solubility in water: ~330 g/l (20°C)

Additional information

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