Calcium sulfate
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Calcium sulfate is an inorganic salt with the chemical formula CaSO4. It occurs in several hydrated forms; the anhydrous state is a white crystalline solid often found in evaporite deposits. Its dihyd
Calcium sulfate hemihydrate powder
The desiccant Drierite
Plaster
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Plaster is a building material typically used for cladding on interior walls, pool interiors, ceilings and for moulding and casting decorative elements. In English, "plaster" usually means a material
Calcium sulfate
…Ca2+ coordinated with tetrahedral SO2− 4 and another with interstitial water molecules. The hemihydrate CaSO 4·1/2H 2O (bassanite) is also known as plaster of Paris. Specific hemihydrates are sometimes distinguished between α-hemihydrate and β-hemihydrate. The main use of calcium sulfate is to produce plaster of…
plaster reliefs, such as this work at the Château de Fontainebleau, were hugely influential in Northern Mannerism. A plaster low-relief decorative frieze is above it.
Applying mud plaster to an outside wall
Clay plaster base coat on split oak lath held in place with straw and manure, covered with a lime plaster top coat, Old Economy Village, Pennsylvania (1827)
Lime setting-coat on clay plaster with straw binder. Applied to hand-split lath over a timber framed wall of a brick family house at Old Economy Village, Pennsylvania