Phosphoric Acid → Tricalcium Phosphate

HRID 972700Notes

Reaction equation

HRID 972700 reaction equation
[O-2].[Ca+2:2].[OH-].[Ca+2].[OH-].[OH:6][P:7]([OH:10])([OH:9])=[O:8]>O>[P:7]([O-:10])([O-:9])([O-:8])=[O:6].[Ca+2:2].[Ca+2:2].[Ca+2:2].[P:7]([O-:10])([O-:9])([O-:8])=[O:6]

Participants

5

Reactant 3

HCID 1004Phosphoric AcidHCID 6093208Calcium HydroxideHCID 6850728Calciumoxide

Product 1

HCID 24456Tricalcium Phosphate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

1,000 ml. of distilled water were placed in a 2 liter Erlenmeyer flask. 243 gms. of calcium oxide were added with stirring. A great amount of heat accompanied the formation of calcium hydroxide. 500 gms of 85% H3PO4 were added slowly. Heat was also evolved. The suspension was stirred for 1/2 hour and then allowed to settle. The white tricalcium phosphate formed was filtered and placed in an oven at 100° C. overnight to dry.

Workup

  1. temperatureA great amount of heat
  2. temperatureHeat
  3. stirringThe suspension was stirred for 1/2 hour

Sources & evidence

ORD record
ord-db335e9cbfe340d1922537b1ed9bad63
Source dataset
uspto-grants-1977_10
Patent number
US04053561

Reaction notes

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