Hydroxyapatite (HAp) that being derived from quail eggshell was successfully prepared via precipitation method with the variation of Ca:P concentration and calcination temperature. The precursors used are Ca(OH)₂ and H₃PO₄. This study aimed to investigate the effect of the Ca:P concentration and temperature of calcination to HAp and characterization of products with XRD, SEM-EDX and FTIR. Quail eggshells were calcined at 1000°C to produce calcium oxide (CaO). CaO and H₃PO₄ dissolved in aquabides to produce Ca(OH)₂ and H₃PO₄ to achieve a certain concentration, then the two materials are mixed. The result of the mixture was calcined at 650°C, 850°C, and 1050°C. The result of XRD pattern shows that Ca:P concentration at 1:0.6 and 1.67:1 have higher crystallinity than 0.5:0.3. In addition, the variation of calcination temperature shows that degree of crystallinity increases when the temperature of calcination increases. Crystallite sizes of Hap powders are in the range 13.91 to 47.09 nm. From EDX result, the obtained HAp’s have a Ca:P ratio between 1.55 to 1.81. From FTIR result, the functional groups of PO₄³- and OH- indicate HAp compounds, but it also contained CO₃²- group. The morphology of HAp powders show that shape of HAp becomes more uniform when temperature is higher.
