What is the chemical formula of plaster of paris ?

Last updated date: 23rd Jan 2023
Total views: 205.5k
Views today: 3.00k
205.5k+ views

CaSO4. 1/2 H2O.

Calcium sulphate with half a molecule of water per molecule of the salt (hemi-hydrate) is called plaster of paris (plaster of paris).

It is prepared by heating gypsum (CaSO4.2H2O) at 120°C in rotary kilns, where it gets partially dehydrated