Ammonium magnesium sulfate

Ammonium magnesium sulfate is a chemical compound with the chemical formula . It forms hydrates.

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.

See also

• Mohr's salt

References