Tags: Chemical Compound, Chemical Substance.
Sodium sulfate is the sodium salt of sulfuric acid. When anhydrous it is a white crystalline solid of formula Na2SO4 known as the mineral thenardite; the decahydrate Na2SO4·10H2O is found naturally as the mineral mirabilite and in processed form has been known as Glauber’s salt or historically sal mirabilis since the 17th century. Another solid is the heptahydrate which transforms to mirabilite when cooled.
