Ammonium magnesium sulfate

Synthesis

The compound is prepared by reduction of ammonium persulfate with magnesium metal.

Physical properties

Ammonium magnesium sulfate forms crystals, soluble in water.

The compound forms a crystallohydrate containing —colorless crystals of monoclinic system, space group P21*/c*, coordinate parameters a = 0.928 nm, b = 1.257 nm, c = 0.620 nm, β = 107.1°, Z = 4.

Natural occurrence

Ammonium magnesium sulfate hexahydrate naturally occurs as Boussingaultite, a rare mineral of picromerite group, originally described from geothermal fields in Tuscany, Italy, where it occurs together with its iron analogue mohrite.

References

References

1. (1902). "Specifications and Drawings of Patents Issued from the United States Patent Office". U.S. Government Printing Office.
2. (23 July 1992). "Dictionary of Inorganic Compounds". [[CRC Press]].
3. (2013). "Purification of Laboratory Chemicals". [[Butterworth-Heinemann]].
4. "CAS 7785-18-4 Ammonium magnesium sulfate - Alfa Chemistry". alfa-chemistry.com.
5. (1 March 2018). "Thermodynamic properties of ammonium magnesium sulfate hexahydrate (NH4)2Mg(SO4)2·6H2O". [[The Journal of Chemical Thermodynamics]].
6. (October 2024). "The Crystal Chemistry of Boussingaultite, (NH4)2Mg(SO4)2·6H2O, and Its Derivatives in a Wide Temperature Range". Minerals.