Stabilization of the amorphous state of calcium carbonate-phosphates with phosphate ions

Amorphous calcium carbonate-phosphate with a Ca/P ratio of 1.83 was precipitated from Ca 2+ , PO 3– 4 CO 2 - 3 − containing solutions at pH 10 and stabilized by ethanol dehydration followed heating 400 °C. The presence ions in the structure amorphous provides its increased resistance to transformation into crystalline phases. Aging mother solution for days promotes / carbonated hydroxyapatite calcite. combined effect и aquatic environment on crystallization contributes maximum stabilization state that high extent bioactivity.