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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 .
Epsomite, Epsom salt, or magnesium sulfate heptahydrate, is a hydrous magnesium sulfate mineral with formula MgSO 4 ·7H 2 O. Physical properties
Like magnesium oxide, it will generate a basic carbonate when placed in the air. [3] Magnesium sulfide can be produced by the reaction of magnesium and hydrogen sulfide, or by the reaction of magnesium sulfate and carbon disulfide at high temperature: [6] Mg + H 2 S → MgS + H 2 3 MgSO 4 + 4 CS 2 → 3 MgS + 4 COS + 4 SO 2
The molar mass of atoms of an element is given by the relative atomic mass of the element multiplied by the molar mass constant, M u ≈ 1.000 000 × 10 −3 kg/mol ≈ 1 g/mol. For normal samples from Earth with typical isotope composition, the atomic weight can be approximated by the standard atomic weight [ 2 ] or the conventional atomic weight.
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]
Formula of hydrated metal ion sulfate Coordination sphere of the metal ion Equivalents of water of crystallization that are not bound to M mineral name Remarks MgSO 4 (H 2 O) [Mn(μ-H 2 O)(μ 4,-κ 1-SO 4) 4] [31] none: kieserite: see Mn, Fe, Co, Ni, Zn analogues MgSO 4 (H 2 O) 4 [Mg(H 2 O) 4 (κ′,κ 1-SO 4)] 2: none: sulfate is bridging ...
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
Sodium sulfate is a typical electrostatically bonded ionic sulfate. The existence of free sulfate ions in solution is indicated by the easy formation of insoluble sulfates when these solutions are treated with Ba 2+ or Pb 2+ salts: Na 2 SO 4 + BaCl 2 → 2 NaCl + BaSO 4. Sodium sulfate is unreactive toward most oxidizing or reducing agents.