Calcium phosphate powder was synthesized from calcium formate Ca (CHO 2 ) 2 and ammonium hydrogen phosphate (NH 4 ) 2 HPO 4 at the Ca / P ratio in the initial aqueous solutions equal to 1. The phase composition of the powders synthesized from solutions with a concentration of 0.5 M was represented by brushite CaHPO 4 .2H 2 O and octacalcium phosphate Ca 8 (NPO 4 ) 2 (PO 4 ) < sub> 6 · 6Н 2 O. The phase composition of the powder after firing at 1100 & # 176; C was represented by calcium pyrophosphate & # 946; -Ca 2 P 2 O 7 and tricalcium phosphate & # 946; -Ca 3 (PO 4 ) 2 . The synthesized powder can be used to obtain biocompatible resorbable biphasic ceramic materials and composites with a polymer matrix.
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