Nomenclature
CAS number: 35405-51-7
Calcium diphosphate.
Ca
2O
7P
2; mol wt 254.10.
Ca 31.55%, O 44.08%, P 24.38%.
Ca
2P
2O
7.
Description and references
Prepn by ignition of CaHPO4: St.
Pierre, J. Am. Chem. Soc. 77, 2197 (1955).
Properties
Polymorphous crystals or powder. d 3.09. mp 1353°. Practically insol in water. Sol
in dil HCl or HNO3.Use
Abrasive; fertilizer; feed supplement; in dentifrices,
ceramic ware, china, glass, phosphors.