A white crystalline salt, insoluble in water. Used in Keene's cement, in pigments, as a paper filler, and as a drying agent.
The technical name given for gypsum, a mineral salt that imparts hardness to soft water.
1. The chemical compound CaSO4. 2. White inert pigment which provides very little color or opacity. 3. A drying agent or desiccant in liquid line driers.
Calcium sulfate is a common laboratory and industrial chemical. In its anhydrous form, it is sold as a laboratory desiccant under the name Drierite®. The hemihydrate is better known as plaster of Paris, while the dihydrate occurs naturally as gypsum.
