Phosphoric Acid → Tricalcium Phosphate

HRID 2290493Notes

Reaction equation

HRID 2290493 reaction equation
C([O-])([O-])=O.[Ca+2:5].[OH:6][P:7]([OH:10])([OH:9])=[O:8].[O:11]=[P:12]12[O:23]P3(OP(OP(O3)([O:19]1)=O)(=O)[O:13]2)=O>>[P:7]([O-:10])([O-:9])([O-:8])=[O:6].[Ca+2:5].[P:12]([O-:23])([O-:19])([O-:13])=[O:11].[Ca+2:5].[Ca+2:5]

Participants

4

Reactant 3

HCID 1004Phosphoric AcidHCID 10112Calcium CarbonateHCID 14812Phosphorus oxide (P4O10)

Product 1

HCID 24456Tricalcium Phosphate

Procedure

CaCO3 and H3PO4 were mixed in such amounts that correspond to 47 mol % (26% by weight) of CaO and 53 mol % (74% by weight) of P2O5, respectively. The mixture was treated in the same manner as in Example 1 to obtain calcium phosphate type crystallizable glass. The glass was subjected to crystallizing treatment at 650° C. for 20 hours. The properties of the crystallized glass having an atomic ratio of Ca/P of 0.44 thereby obtained, are shown in Table 1.

Workup

  1. additionThe mixture was treated in the same manner as in Example 1

Sources & evidence

ORD record
ord-8888ba3005b4437ba3c39c9ba7edc07a
Source dataset
uspto-grants-1986_10
Patent number
US04617279

Reaction notes

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