Title: Calcium Phosphate, Tribasic
CAS Registry Number: 7758-87-4
Additional Names: Tricalcium orthophosphate; tricalcium phosphate; tertiary calcium phosphate
Trademarks: Calcigenol Simple
Molecular Formula: Ca3O8P2
Molecular Weight: 310.18
Percent Composition: Ca 38.76%, O 41.26%, P 19.97%
Line Formula: Ca3(PO4)2
Literature References: It is about 96% pure, usually contg an excess of CaO. Occurs in nature as the minerals: oxydapatit, voelicherite, whitlockite. The technical product is also known as "bone ash". Commercial prepn from phosphate rock: Hignett, Hubbard, Ind. Eng. Chem. 38, 1208 (1946); Elmore, US 2474831 (1949 to T.V.A.); Hollingsworth, US 2556541 and US 2562718 (both 1951 to Coronet Phosphate); Brosheer, Hignett, Chem. Eng. Rept. no. 7, 143 pp (1953).
Properties: Amorphous, odorless, tasteless powder. mp 1670°. d 3.14. Practically insol in water, alcohol or acetic acid; sol in dil HCl or HNO3.
Melting point: mp 1670°
Density: d 3.14
Use: Manuf of fertilizers, H3PO4 and P compds; manuf milk-glass, polishing and dental powders, porcelains, pottery; enameling; clarifying sugar syrups; in animal feeds; as noncaking agent; in the textile industry.
Therap-Cat: Calcium replenisher.
Therap-Cat-Vet: Has been used as a dietary supplement, and as an antacid.
Keywords: Replenishers/Supplements; Calcium.