Gypsum an overview | ScienceDirect Topics
Gypsum (calcium sulfate, CaSO 4 ·2H 2 O) is a naturally occurring mineral used in different kinds of industrial application. When heated above 120 °C, a part of the chemically bound water is released and different mineral calcium sulfates like hemihydrate (CaSO 4 · 2 O; formed at 130–160 °C) and anhydrite (CaSO 4 ; formed at 290–900 ...