Ammonium magnesium sulfate

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Ammonium magnesium sulfate
Names
IUPAC name
magnesium;azane;hydrogen sulfate
Other names
Diammonium magnesium bis(sulfate)
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.035.242 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 238-782-2
PubChem CID
  • InChI=1S/Mg.2H3N.2H2O4S/c;;;2*1-5(2,3)4/h;2*1H3;2*(H2,1,2,3,4)/q+2;;;;/p-2
    Key: DCNGHDHEMTUKNP-UHFFFAOYSA-L
  • N.N.OS(=O)(=O)[O-].OS(=O)(=O)[O-].[Mg+2]
Properties
H8MgN2O8S2
Molar mass 252.50 g·mol−1
Appearancecrystals
Density 1,723 g/cm3 (hexahydrate)
soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Ammonium magnesium sulfate is a chemical compound with the chemical formula (NH4)2Mg(SO4)2. It forms hydrates. [1]

Contents

Synthesis

The compound is prepared by reduction of ammonium persulfate with magnesium metal. [2]

Physical properties

Ammonium magnesium sulfate forms crystals, soluble in water.

The compound forms a crystallohydrate containing Mg(NH4)2(SO4)2 · 6H2O [3] [4] —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. [5]

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. [6]

See also

References

  1. ↑ Specifications and Drawings of Patents Issued from the United States Patent Office. U.S. Government Printing Office. 1902. p. 2755. Retrieved 25 February 2025.
  2. ↑ Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3456. ISBN   978-0-412-30120-9 . Retrieved 25 February 2025.
  3. ↑ Armarego, W. L. F.; Chai, Christina Li Lin (2013). Purification of Laboratory Chemicals. Butterworth-Heinemann. p. 559. ISBN   978-0-12-382161-4 . Retrieved 25 February 2025.
  4. ↑ "CAS 7785-18-4 Ammonium magnesium sulfate - Alfa Chemistry". alfa-chemistry.com. Retrieved 25 February 2025.
  5. ↑ Kosova, Daria A.; Druzhinina, Anna I.; Tiflova, Lyudmila A.; Monayenkova, Alla S.; Uspenskaya, Irina A. (1 March 2018). "Thermodynamic properties of ammonium magnesium sulfate hexahydrate (NH4)2Mg(SO4)2·6H2O" . The Journal of Chemical Thermodynamics . 118: 206–214. doi:10.1016/j.jct.2017.11.016. ISSN   0021-9614 . Retrieved 25 February 2025.
  6. ↑ Zhitova, Elena S.; Sheveleva, Rezeda M.; Zolotarev, Andrey A.; Shendrik, Roman Yu; Pankrushina, Elizaveta A.; Turovsky, Konstantin A.; Avdontceva, Margarita S.; Krzhizhanovskaya, Maria G.; Vlasenko, Natalia S.; Zolotarev, Anatoly A.; Rassomakhin, Mikhail A.; Krivovichev, Sergey V. (October 2024). "The Crystal Chemistry of Boussingaultite, (NH4)2Mg(SO4)2·6H2O, and Its Derivatives in a Wide Temperature Range". Minerals. 14 (10): 1052. doi: 10.3390/min14101052 . ISSN   2075-163X.
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