Table 3.
Main calcium phosphates involved in CPC products.
| Acronym | Compound | Chemical Formula | Ca/P Molar Ratio |
Solubility (pKs) | pH Stability |
|---|---|---|---|---|---|
| MCPM | Monocalcium phosphate monohydrate | Ca(H2PO4)2·H2O | 0.5 | 1.14 | 0.0–2.0 |
| DCPD | Dicalcium Phosphate Dihydrate (Brushite) | CaHPO4·2H2O | 1.0 | 6.6 | 2.0–6.0 |
| α-TCP | α-Tricalcium Phosphate | α-Ca3(PO4)2 | 1.5 | 25.5 | does not precipitate in aqueous solution |
| β-TCP | β-Tricalcium Phosphate | β-Ca3(PO4)2 | 1.5 | 29.5 | does not precipitate in aqueous solution |
| CDHA | Calcium Deficient Hydroxyapatite | Ca10−x(HPO4)x(PO4)6−x (OH)2−x (0 < x < 1) |
1.5–1.67 | <42.6 | 6.5–9.5 |
| HA | Hydroxyapatite | Ca10(PO4)6(OH)2 | 1.67 | 58.6 | 4.5–12.0 |
| TTCP | Tetracalcium phosphate | Ca4(PO4)2O | 2.0 | 37–42 | does not precipitate in aqueous solution |