Sodium magnesium sulfate is a double sulfate of sodium and magnesium. There are a number of different stoichiometries and degrees of hydration with different crystal structures, and many are minerals. Members include: Blödite or bloedite: sodium magnesium sulfate tetrahydrate Na2Mg(SO4)2•4H2O Disodium magnesium disulfate decahydrate Na2Mg(SO4)2•10H2O Disodium magnesium disulfate hexadecahydrate Na2Mg(SO4)2•16H2O Na2SО4·MgSO4·2.5H2O Konyaite Na2Mg(SO4)2•5H2O Löweite Na12Mg7(SO4)13•15H2O. Vanthoffite Na6Mg(SO4)4 Na2Mg2(SO4)3 langbeinite form stable from 569.2 to 624.7°C Na2Mg2(SO4)3 quenched monoclinic form Na2Mg3(SO4)4 orthorhombic form Na2Mg(SO4)2 triclinic form
Salts containing other anions in addition to sulfate Na2Mg3(OH)2(SO4)4•4H2O Tychite hexasodium dimagnesium sulfate tetracarbonate Na6Mg2SO4(CO3)4 Uklonskovite NaMgSO4F•2H2O
References
External links