Difference Between Gypsum and Plaster of Paris

The key difference between gypsum and plaster of Paris is that the Gypsum contains calcium sulfate dihydrate whereas the plaster of Paris contains calcium sulfate hemihydrates. Gypsum is a naturally occurring mineral. Plaster of Paris and gypsum both contain calcium sulfateā€™s hydrate form, but their water content in a molecule differs from each other. Therefore, … Continue reading Difference Between Gypsum and Plaster of Paris