Apperance
|
white solid hygroscopic
|
Std enthalpy of formation
|
-1113 kJ/mol
|
Density
|
2.958 g/cm3 (anhydrous) 2.825 g/cm3 (dihydrate) 1.837 g/cm3 (trihydrate) 1.73 g/cm3 (pentahydrate)
|
Flash Point
|
Non-flammable
|
Melting Point
|
540 °C decomp. (anydrous) 165 °C (trihydrate)
|
Std molar entropy
|
66 J·mol-1·K-1
|
Odor
|
odorless
|
Refractive Index
|
1.717 (anhydrous) 1.458 (dihydrate) 1.412 (trihydrate)
|
Solubility
|
0.0106 g/100 mL (25 °C, anhydrous) 3.75 g/L (20 °C, pentahydrate) in water
|
Solubility
|
soluble in acid, aqueous CO2 insoluble in acetone, ammonia
|
Solubility Product (Ksp)
|
1.0×10-5
|
EU Index
|
Not listed
|
RTECS
|
OM2470000
|