Calcium Carbonate → Tetracalcium phosphate

HRID 1198380

Reaction equation

HRID 1198380 reaction equation
[O-:1][P:2]([O:5]P([O-])([O-])=O)(=[O:4])[O-:3].[Ca+2:10].[Ca+2].C(=O)([O-])[O-].[Ca+2]>>[P:2]([O-:5])([O-:4])([O-:3])=[O:1].[Ca+2:10].[Ca+2:10].[Ca+2:10].[Ca+2:10]

Participants

3

Reactant 2

HCID 10112Calcium CarbonateHCID 24632Calcium pyrophosphate (Ca2P2O7)

Product 1

HCID 18676510Tetracalcium phosphate

Procedure

Calcium pyrophosphate was reacted with calcium carbonate by a conventional method, and calcined to obtain tetracalcium phosphate in powder form. 2 grams of this powder was mixed with 1 g of a setting solution prepared by dissolving 0.1 g of chitosan ("Flonac N" made by Kyowa Yushi Kogyo K. K.) and 3 g of saccharose in 10 g of an aqueous solution of 40% citric acid. A plastic gum-like composition was obtained and this composition set in about 5 minutes to produce a setting material having a high strength.

Sources & evidence

ORD record
ord-e41c5a15ad2a4fc1ab8427d1c0c16937
Source dataset
uspto-grants-1994_01
Patent number
US05281404

Linked notes

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