Na2SO4 – sodium sulfate – is an odorless, white, crystalline solid. Its form with 10 molecules of water is widely known as Glauber's salt, named after its discoverer, chemist and apothecary Johann Rudolf Glauber. The crystals’ use as a general-purpose laxative gained them the name sal mirabilis (miraculous salt). It is widely used in the production of detergents, but the modern day has seen the advent of increasingly more liquid products that do not contain this compound. Also, this substance is used in large amounts in the kraft process of paper pulping, in the textile and leather industries, and in non-ferrous metallurgy.