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Magnesium sulfate or magnesium sulphate is a chemical compound, a salt with the formula MgSO 4, consisting of magnesium cations Mg 2+ (20.19% by mass) and sulfate anions SO 2− 4. It is a white crystalline solid , soluble in water but not in ethanol .
In the United Kingdom, a medication containing magnesium sulfate, called "drawing paste", is claimed to be useful for small boils or localised infections, [19] and removing splinters. [20] The standard British Pharmacopoeia composition is dried magnesium sulfate 47.76% (by mass), phenol 0.49%, and glycerol to balance. [19]
Epsomite, Epsom salt, or magnesium sulfate heptahydrate, is a hydrous magnesium sulfate mineral with formula MgSO 4 ·7H 2 O. Physical properties
Meridianiite is the mineral consisting of magnesium sulfate undecahydrate, MgSO 4 ·11H 2 O.It is colorless transparent crystalline salt that precipitates from solutions saturated in Mg 2+ and SO 4 2− ions at temperatures less than 2 °C. [4]
In 1990, the safety of synthetic magnesium silicate was reviewed by the Scientific Committee on Food (SCF) together with that of silica and the other metal alkali silicates. [10] The SCF noted that “the available data, including a number of short-term studies in two species, appear to substantiate the biological inertness of those compounds”.
Magnesium sulfite is the magnesium salt of sulfurous acid with the formula MgSO 3.Its most common hydrated form has 6 water molecules making it a hexahydrate, MgSO 3 ·6 H 2 O.When heated above 40 °C (104 °F), it is dehydrated to magnesium sulfite trihydrate, or MgSO
It can be obtained by the reaction of magnesium chloride and silver permanganate: MgCl 2 + 2AgMnO 4 → Mg(MnO 4) 2 + 2AgCl. The hexahydrate Mg(MnO 4) 2 ·6H 2 O can be crystallized from the solution, which is slightly hygroscopic. [3] The anhydrous form can be obtained by decomposing the hexahydrate by heating it.
This page provides supplementary chemical data on sodium sulfate. ... The handling of this chemical may incur notable safety precautions. ... anhydrous: 7.90 at r.t. ...