Phosphoric Acid → Tricalcium Phosphate

HRID 235784Notes

Reaction equation

[P:1](=[O:5])([OH:4])([OH:3])[OH:2].[OH-].[Ca+2:7].[OH-]>>[P:1]([O-:5])([O-:4])([O-:3])=[O:2].[Ca+2:7].[Ca+2:7].[Ca+2:7].[P:1]([O-:5])([O-:4])([O-:3])=[O:2]

Participants

Reactant 2

HCID 1004Phosphoric Acid

HCID 6093208Calcium Hydroxide

Product 1

HCID 24456Tricalcium Phosphate

Procedure

A hydrated gel of tricalcium phosphate is prepared by slowly adding a solution of phosphoric acid (85% by weight) to a solution of calcium hydroxide (2.0% by weight) and reacted for 30 minutes. A translucent, hydrated precipitate of tricalcium phosphate is formed, which is concentrated by centrifugation. The concentrated gel of tricalcium phosphate is then added to the slurry of soy isolate. The slurry, following addition of the gel has a solids level of 14% by weight and a pH of 7.0±0.05. The gel is added in an amount sufficient to provide a calcium level of 2.6% by weight of the protein solids on a dry basis and the fortified slurry was allowed to equilibrate for 1 hour.

Workup

customA hydrated gel of tricalcium phosphate is prepared
customreacted for 30 minutes

Sources & evidence

ORD record: ord-5d2484bf345845a98675bf045fc5337a
Source dataset: uspto-grants-1987_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04642238

Reaction notes

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