scholarly journals Transformation of dicalcium phosphate dihydrate into octacalcium phosphate with incorporated dicarboxylate ions

2018 ◽  
Vol 126 (6) ◽  
pp. 462-468 ◽  
Author(s):  
Taishi YOKOI ◽  
Tomoyo GOTO ◽  
Satoshi KITAOKA
Keyword(s):  
Octacalcium Phosphate ◽  
Dicalcium Phosphate ◽  
Dicalcium Phosphate Dihydrate ◽  
Phosphate Dihydrate

Structural changes during the hydrolysis of dicalcium phosphate dihydrate to octacalcium phosphate and hydroxyapatite

2015 ◽  
Vol 51 (4) ◽  
pp. 355-361 ◽  
Author(s):  
V. F. Shamrai ◽  
A. E. Karpikhin ◽  
A. Yu. Fedotov ◽  
V. P. Sirotinkin ◽  
S. M. Barinov ◽  
...  
Keyword(s):  
Structural Changes ◽  
Octacalcium Phosphate ◽  
Dicalcium Phosphate ◽  
Dicalcium Phosphate Dihydrate ◽  
Phosphate Dihydrate ◽  
Hydrolysis Of

Seeded Growth of Calcium Phosphates: Effect of Different Calcium Phosphate Seed Material

1976 ◽  
Vol 55 (4) ◽  
pp. 617-624 ◽  
Author(s):  
G.H. Nancollas ◽  
J.S. Wefel
Keyword(s):  
Calcium Phosphate ◽  
Tricalcium Phosphate ◽  
Calcium Phosphates ◽  
Octacalcium Phosphate ◽  
Dicalcium Phosphate ◽  
Dicalcium Phosphate Dihydrate ◽  
Seeded Growth ◽  
Seed Crystals ◽  
Phosphate Dihydrate ◽  
Supersaturated Solutions

The growth of calcium phosphates on seed materials, dicalcium PhosPhate dihydrate (DCPD), tricalcium phosphate (TCP), octacalcium phosphate (OCP), and hydroxyapatite (HAP) in stable supersaturated solutions has been studied under conditions of pH and concentration for which the predominant phases are 1, DCPD, and II, HAP. All seed crystals are good nucleators for DCPD in system I, but, aside from HAP itself, only OCP will readily induce growth under condition II.

scholarly journals REACTION PRODUCTS OF ORTHOPHOSPHATES IN SOILS CONTAINING VARYING AMOUNTS OF CALCIUM AND MAGNESIUM

1967 ◽  
Vol 47 (3) ◽  
pp. 223-230 ◽  
Author(s):  
G. J. Racz ◽  
R. J. Soper
Keyword(s):  
Calcium Phosphate ◽  
Octacalcium Phosphate ◽  
Water Soluble ◽  
Dicalcium Phosphate ◽  
Dicalcium Phosphate Dihydrate ◽  
Reaction Products ◽  
Phosphate Dihydrate ◽  
Soluble Calcium ◽  
Calcium And Magnesium ◽  
Saturated Solutions

The reaction products formed when orthophosphates (pellets) were added to 22 soils, with different calcium and magnesium contents, were identified. Di-calcium phosphate dihydrate (CaHPO4∙2H2O) formed in the soils having a water-soluble calcium to magnesium ratio of approximately 1.5 or greater. Dicalcium phosphate dihydrate and/or dimagnesium phosphate trihydrate (MgHPO4∙3H2O) formed in soils having a water-soluble calcium to magnesium ratio of less than 1.5.Dicalcium phosphate dihydrate and dimagnesium phosphate trihydrate precipitated in filtrates of two dolomitic soils shaken for 15 min with saturated solutions of KH2PO4 and NH4H2PO4. Octacalcium phosphate (Ca4H (PO4)3∙3H2O) and trimagnesium phosphate tetrahydrate (Mg3 (PO4)2∙4H2O) precipitated in filtrates of these soils when saturated solutions of K2HPO4 and (NH4)2HPO4 were used.Trimagnesium phosphate twenty-two hydrate (Mg3 ((PO4)2∙22H2O) formed when dimagnesium phosphate trihydrate was added to a soil containing large amounts of magnesium.

The growth of dicalcium phosphate dihydrate on octacalcium phosphate at 25°C

1986 ◽  
Vol 76 (1) ◽  
pp. 192-198 ◽  
Author(s):  
Jean-Claude Heughebaert ◽  
J.F. De Rooij ◽  
G.H. Nancollas
Keyword(s):  
Octacalcium Phosphate ◽  
Dicalcium Phosphate ◽  
Dicalcium Phosphate Dihydrate ◽  
Phosphate Dihydrate
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