This study was conducted as an attempt to synthesize dicalcium phosphate in nano particle size (NDCP). A sol-gel method with deionized water or ethanol as a solvent was used. The synthesized NDCP was characterized by means of Fourier transform infrared (FTIR) spectroscopy, Xray diffraction (XRD), transmission electron microscopy (TEM) and Energy Dispersive Analysis by X-ray (EDAX). The results indicated that using ethanol solvent resulted in 81.8% NDCP and 18.2% calcium carbonate, but deionized water solvent gave 100% NDCP. Crystal sizes of NDCP synthesized using deionized water or ethanol as solvent were 26 nm and 34 nm, respectively. The NDCP synthesized using deionized water solvent is better than that synthesized by ethanol solvent in purity, size and cost of synthesis. The proposed method is environmentally friendly, economic, time-saving and could perform at room temperature. Further applied feeding studies on poultry will be conducted to determine the bioavailability of P on nano particle size.
