Calcium sulfate

July 8th, 2008 by

Calcium sulfate

Other names
Plaster of Paris, Drierite
Identifiers
CAS number
RTECS number
WS6920000
Properties
Molecular formula
CaSO4
CaSO4.1/2H2O (hemihydrate)
Molar mass
136.142 g/mol
(anhydrous)
145.15 g/mol
(hemihydrate)
Appearance
white solid
Density
2.96 g/cm3, solid
Melting point
1460 °C (anhydrous)
Solubility in water
0.24 g/100 mL (20 °C)
Structure
Crystal structure
orthorhombic
Related compounds
Other cations
Magnesium sulfate
Strontium sulfate
Related desiccants
Calcium chloride
Magnesium sulfate
Related compounds
Plaster of Paris
Gypsum
Supplementary data page
Structure and
properties
n, εr, etc.
Thermodynamic
data
Phase behaviour
Solid, liquid, gas
Spectral data
UV, IR, NMR, MS
Except where noted otherwise, data are given for
materials [...]

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