sodium sulfate n a bitter salt Na2SO4 used esp. in detergents, in the manufacture of wood pulp and rayon, in dyeing and finishing textiles, and in its hydrated form as a cathartic see GLAUBER'S SALT
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[USP] the decahydrate disodium salt of sulfuric acid, used orally as a cathartic or laxative and also administered by gastric lavage in the treatment of barium poisoning. Called also Glauber salt.Medical dictionary. 2011.