Glauber's salt, also known as sodium sulfate decahydrate, is a white crystalline solid with the chemical formula Na2SO4·10H2O. It is named after the German chemist Johann Rudolf Glauber, who discovered it in the 17th century. This compound is commonly used in various applications, including as a laxative in medicine and as a drying agent in chemical processes. In addition to its medicinal uses, Glauber's salt is also utilized in the manufacturing of glass, textiles, and detergents. It can absorb moisture from the air, making it useful in desiccants. When heated, it loses water and can be used in thermal energy storage systems.