Krishna Sodium Sulphate

Sodium sulfate is the  sodium salt 99 % of  sulfuric acid. When anhydrous, it is a white crystalline solid of formula Na2SO4 known as the mineral thenardite; the decahydrate Na2SO410H2O 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. With an annual production of 6 million tonnes, it is a major  commodity chemical product. Sodium sulfate is mainly used for the manufacture of  detergent and in the  kraft process of paper pulping. About two-thirds of the world's production is from mirabilite, the natural mineral form of the decahydrate, and the remainder from by-products of chemical processes such as  hydrochloric acid production.