Calcium sulfate dihydrate
Names: Calcium sulfate dihydrate ; Phosphogypsum ; Compactrol ;
Gypsum [Ca(SO4).2H2O] ; Landplaster
Molecular Formula:CaH4O6S
Molecular Weight:172.17116 g/mol
is the main constituent in many forms of
plaster
A massive fine-grained white
It is the hardness of 2 on the Mohs scale of mineral hardness