Nomenclature
CAS number: 563-72-4
Ethanedioic acid calcium salt.
C
2CaO
4; mol wt 128.10.
C 18.75%, Ca 31.29%, O 49.96%.
CaC
2O
4.
Description and references
Prepn from calcium formate: Bredt, US 1622991 (1927); from calcium cyanamide: Barsky,
Buchanan, J. Am. Chem. Soc. 53, 1270 (1931).
Derivative
Monohydrate.
Properties
Cubic crystals. Loses all of its water at 200°.
When ignited is converted into CaCO3 or CaO without appreciable
charring. d 2.2. Practically
insol in water or acetic acid; sol in dil HCl or HNO3.Use
In ceramic glazes; as carrier for separation of
rare earth metals; analysis for calcium: Ingols, Murray,
Anal. Chem. 21, 525 (1949).