Plaster of Paris
Plaster of Paris is chemically calcium sulphate hemihydrate, Its uses are as follows:
- It is used in making toys, materials for decoration and for making smooth surfaces.
- It is used in surgical bandages by doctors for supporting fractured bones in the right position.
- It is used in making casts of statues, moulds for pottery and ceramics. It is also used in building material.
- It is used in dentistry.
Specification of Plaster of Paris
Chemical formula CaSO4 , 1/2H2O Chemical composition (Typical) SiO 0.94% Fe2O3 0.28% Al2O3 0.69% CaSO4 , 1/2H2O 97.97% MgO 00.12%
Plaster of Paris forms the basis of many commercial, Plasters used for interior decoration. As a false ceiling, studio sets etc.