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Magnesium Sulfate Properties

Magnesium Sulfate

Magnesium Sulfate Structure-Molecule Struture
Molecule Structure Image



Magnesium sulfate is a chemical compound containing magnesium, sulfur and oxygen. It is used as a drying agent. In agriculture and gardening, magnesium sulfate is used to correct magnesium deficiency in soil, since magnesium is an essential element in the chlorophyll molecule. It is commonly used as a desiccant in organic synthesis due to its affinity for water. It is used in bath salts, particularly in flotation therapy where high concentrations raise the bath water's specific gravity, effectively making the body more buoyant. This property is also used to restore some Lava lamps damaged by being shaken by exchanging the water and adding drops of a concentrated solution until sustainable buoyancy is reached. It is also used as a reactive compound in the manufacture of Black Powder, where it contributes to a violent burn rate thus reducing material costs. Oral magnesium sulfate is commonly used as a saline laxative. Epsom salt is also available in a gel form for topical application in treating aches and pains.

Chemical Properties

Appearance White Crystalline Solid
Boiling Point 330 °C
CAS Number 7487-88-9
ChEBI 32599
Class NA
Density 2.66 g/cm3
EINECS Number 231-298-2
HS Code 28332100
IUPAC Name Magnesium Sulfate
InChI 1S/Mg.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2
Melting Point 1124 °C
Molar Mass 120.366 g/mol
Molecular Formula MgSO4
NFPA 704 H-1,F-0,R-0,C-NA
Other_Cations Beryllium Sulfate;Calcium Sulfate;Strontium Sulfate;Barium Sulfate
RTECS Number OM4500000
Solubility 255 g/l
Synonyms Magnesium Sulphate;Magnesium Sulfate Anhydrous;Epsom Salts;Bitter Salts