the Mannheim process for producing sodium sulfate. The process involves intermediate formation of potassium bisulfate, an exothermic reaction that occurs at room temperature:
:The second step of the process is endothermic, requiring energy input:
:

Structure and properties

Two crystalline forms are known. Orthorhombic ?-K₂SO₄ is the common form, but it converts to ?-K₂SO₄ above 583 °C.

1.Previous
3.Next